Online Education for RS Aggarwal Solutions Class 7 (2020-2021 Edition)

Online Education for RS Aggarwal Solutions Class 7 (2020-2021 Edition)

RS Aggarwal Class 7 Solutions 2020 Edition for 2021 Examinations

RS Aggarwal Solutions Class 7 PDF Download 2020-2021 Edition is available here. So, students can refer here to get RS Aggarwal Maths Book Class 7 Solutions PDF Download. With the help of uploaded RS Aggarwal Mathematics Class 7 PDF Solutions, CBSE Class 7 students can achieve good marks in Class 7 Maths. By preparing RS Aggarwal Class 7 Maths Book PDF Free Download, students can score more marks in Class 7 Maths. Because RS Aggarwal Maths Class 7 Solutions will play a pivotal role in the preparation of Class 7 Maths.

Get Latest Edition of Class 7 Maths RS Aggarwal Solutions Pdf Download on LearnInsta.com. It provides step by step solutions Maths RS Aggarwal Solutions Class 7 Pdf Download. You can download the RS Aggarwal Class 7 Maths Solutions with Free PDF download option, which contains chapter wise solutions. In Maths Class 7 RS Aggarwal Solutions all questions are solved and explained by expert Mathematic teachers as per CBSE board guidelines. By studying these RS Aggarwal Maths Solutions Class 7 you can easily get good marks in CBSE Class 7 Examinations.

RS Aggarwal Solutions Class 7 Chapter 1 Integers

RS Aggarwal Solutions Class 7 Chapter 2 Fractions

RS Aggarwal Solutions Class 7 Chapter 3 Decimals

RS Aggarwal Solutions Class 7 Chapter 4 Rational Numbers

RS Aggarwal Solutions Class 7 Chapter 5 Exponents

RS Aggarwal Solutions Class 7 Chapter 6 Algebraic Expressions

RS Aggarwal Solutions Class 7 Chapter 7 Linear Equations in One Variable

RS Aggarwal Solutions Class 7 Chapter 8 Ratio and Proportion

RS Aggarwal Solutions Class 7 Chapter 9 Unitary Method

RS Aggarwal Solutions Class 7 Chapter 10 Percentage

RS Aggarwal Solutions Class 7 Chapter 11 Profit and Loss

RS Aggarwal Solutions Class 7 Chapter 12 Simple Interest

RS Aggarwal Solutions Class 7 Chapter 13 Lines and Angles

RS Aggarwal Solutions Class 7 Chapter 14 Properties of Parallel Lines

RS Aggarwal Solutions Class 7 Chapter 15 Properties of Triangles

RS Aggarwal Solutions Class 7 Chapter 16 Congruence

RS Aggarwal Solutions Class 7 Chapter 17 Constructions

RS Aggarwal Solutions Class 7 Chapter 18 Reflection and Rotational Symmetry

RS Aggarwal Solutions Class 7 Chapter 19 Three-Dimensional Shapes

RS Aggarwal Solutions Class 7 Chapter 20 Mensuration

RS Aggarwal Solutions Class 7 Chapter 21 Collection and Organisation of Data (Mean, Median and Mode)

RS Aggarwal Solutions Class 7 Chapter 22 Bar Graphs

RS Aggarwal Solutions Class 7 Chapter 23 Probability

Class 7 Geography Chapter 9 Extra Questions and Answers Life in the Temperate Grasslands

Online Education for Class 7 Geography Chapter 9 Extra Questions and Answers Life in the Temperate Grasslands

Online Education for Life in the Temperate Grasslands Class 7 Extra Questions Geography Chapter 9

Class 7 Geography Chapter 9 Extra Questions Question 1.
On the basis of climate, the world’s grassland can be divided into which two categories?
Answer:

  1. Temperate grasslands,
  2. Tropical grasslands.

Life In The Temperate Grasslands Class 7 Extra Questions Question 2.
Distinguish between forest and grassland.
Answer:
Forest is a place where trees are the main type of vegetation Grassland is a region where grasses form the dominant type of plant life.

Ncert Class 7 Geography Chapter 9 Extra Questions Question 3.
What are prairies?
Answer:
Prairies are the temperate grasslands of North America. It is a region of flat, gently sloping or hilly land covered chiefly by grasses.

Class 7 Geography Chapter 9 Extra Questions And Answers Question 4.
Which physical features bound the prairies in the east and west?
Answer:
The prairies are bound by the Rocky Mountains in the west and the Great Lakes in the east.

Class 7 Geography Chapter 9 Extra Questions and Answers Life in the Temperate Grasslands

Extra Questions For Class 7 Geography Chapter 9 Question 5.
Prairies cover which parts of North America?
Answer:
Prairies cover parts of United States of America and parts of Canada.

Class 7 Geography Chapter 9 Question Answer Question 6.
Which river drains the prairies of USA?
Answer:
River Mississippi and its tributaries.

Class 7 Geography Chapter 9 Worksheet Question 7.
Which river drains the Canadian prairies?
Answer:
River Saskatchewan and its tributaries.

Life In The Temperate Grasslands Class 7 Questions And Answers Question 8.
Name a hot local wind which blows in Prairies.
Answer:
Chinook.

Chapter 9 Geography Class 7 Extra Questions Question 9.
Name the trees which grow in prairies.
Answer:
Willows, alders and poplars.

Life In Temperate Grasslands Class 7 Worksheet Question 10.
Name the major crops grown in prairies.
Answer:
Maize, potatoes, soybeans, cotton and alfa-alfa.

Class 7 Geography Chapter 9 Extra Questions and Answers Life in the Temperate Grasslands

Class 7 Geography Chapter 9 Question 11.
What are ranches and who look after them?
Answer:
In prairies, the large cattle farms are called ranches. These are looked after by sturdy men called cowboys.

Class 7 Geography Chapter 9 Life In The Temperate Grassland Question Answer Question 12.
Name the animals found in prairies.
Answer:
Bison (American buffalo), rabbits, coyotes, gophers and prairie dogs.

Life In Temperate Grasslands Class 7 Extra Questions Question 13.
What is a combine?
Answer:
Combine is a machine which can automatically sow, plough and work as thresher.

Ch 9 Geography Class 7 Extra Questions Question 14.
Why are prairies also called “granaries of the world”?
Answer:
Prairies are also called “granaries of the world” due to the huge surplus of wheat production.

Class 7 Geography Chapter 9 Life In The Temperate Grassland Question 15.
Write the extension of dairy belt in prairies.
Answer:
Dairy belt extends from the Great Lakes to the Atlantic coast.

Question 16.
Why food processing industries have flourished in prairies?
Answer:
Food processing industries have flourished in prairies because extensive agriculture and dairy farming is practised on a large scale in this region.

Class 7 Geography Chapter 9 Extra Questions and Answers Life in the Temperate Grasslands

Question 17.
Name some of the important cities of USA prairies.
Answer:
Chicago, Minneapolis, Indianapolis, Kansas and Denver.

Question 18.
Name some of the important cities of Canadian prairies.
Answer:
Edmonton, Saskatoon, Calgary and Winnipeg.

Question 19.
Which factors have made prairies the most industrialised region in the world?
Answer:

  • Large mineral deposits (particularly goal and iron).
  • Good network of roads, railways and canals.

Question 20.
Which factors have made North America a surplus food producer?
Answer:

  • Scientific methods of cultivation.
  • Use of tractors, harvesters and combines.

Question 21.
How is chinook beneficial for the animal herders?
Answer:
Chinook blows during winter and being a hot wind, it raises the temperature. It results in the melting of snow, making pasture land available for the grazing of animals.

Question 22.
Which regions in prairies are suitable for cattle rearing?
Answer:
Areas where rainfall is very less or unreliable, grasses are short and sparse. These areas are suitable for cattle rearing.

Class 7 Geography Chapter 9 Extra Questions and Answers Life in the Temperate Grasslands

Question 23.
Write the climatic conditions of prairies.
Answer:

  • In prairies, the climate is of continental type with extreme temperatures.
  • The summers are warm with temperatures of around 20°C, while in winter temperature falls to around -20°C.
  • In winters a thick blanket of snow covers this region.
  • The annual rainfall is moderate and ideal for the growth of grass.

Question 24.
What are velds?
Answer:
The temperate grasslands of South Africa are called the velds. These are rolling plateaus with varying heights ranging from 600 m to 1100 m.

Question 25.
Which physical features lie to the east and west of the velds?
Answer:
Velds are bound by the Drakensburg mountains on the east and Kalahari desert on its west.

Question 26.
Name the countries that are covered by the velds.
Answer:
South Africa, parts of Botswana, Zimbabwe and Mozambique.

Question 27.
Which rivers drain the veld region?
Answer:
The tributaries of rivers Orange and Limpopo drain the veld region.

Question 28.
Why do velds receive rainfall during summers?
Answer:
The velds receive rainfall mainly during summers because of the warm ocean currents that wash the shores of the velds.

Class 7 Geography Chapter 9 Extra Questions and Answers Life in the Temperate Grasslands

Question 29.
Which type of vegetation is found in the velds?
Answer:

  • Grasses dominate the landscape.
  • Red grass grows in bush velds.
  • Acacia and Marcoola grows in high velds.

Question 30.
Name the animals found in the veld region.
Answer:
Lions, leopards, cheetah and Kundu.

Question 31.
Which are the two main occupations of the people in the veld region?
Answer:

  1. Cattle rearing (sheep rearing, dairy farming).
  2. Mining (gold and diamond mining).

Question 32.
Why are soils not very fertile in the velds?
Answer:
Soils are not very fertile in the velds because of the presence of discontinuous grasses exposing barren surfaces.

Question 33.
Which minerals are found in veld? Also, write the places where they are found.
Or
Why are gold and diamond mining the major occupations of the people of veld?
Answer:

  • Johannesburg is known for being the gold capital of the world.
  • Kimberley is famous for its diamond mines.

Question 34.
Name the food crops and cash crops grown in velds.
Answer:
Food crops – Maize, wheat, barley, oats, and potato.
Cash crops – Tobacco, sugarcane and cotton.

Class 7 Geography Chapter 9 Extra Questions and Answers Life in the Temperate Grasslands

Question 35.
Write the climatic conditions of the velds.
Answer:

  • The velds have a mild climate due to the influence of the Indian Ocean.
  • Winters are cold and dry.
  • Temperatures vary between 5°C and 10°C.
  • Summers are short and warm.
  • The velds receive rainfall mainly in the summer months from November to February.

Question 36.
Describe the two main occupations sheep rearing and dairy farming practised in the velds.
Answer:
Sheep rearing –

  1. Sheep is bred mainly for wool.
  2. It has given rise to the woollen industry in the velds.
  3. Merino sheep is a popular species and their wool is very warm.

Dairy farming –

  1. Cattles are reared in the warmer and wetter regions.
  2. Dairy products like butter and cheese are produced for both domestic supply and also for export.

Multiple Choice Questions (MCQs)

1. The temperate grasslands of North America are known as;
(a) Steppes
(b) Prairies
(c) Ganga-Brahmputra plains
(d) Murray-Darling basin.
Answer:
(b) Prairies.

2. The Prairies are bounded by the;
(а) Himalayas in .north
(b) Arabian Sea in the west
(c) Rocky mountains in the west and Great lakes in the east
(d) Caribbean sea in the south.
Answer:
(c) Rocky mountains in the west and Great lakes in the east.

3. Which one of the following rivers drains the Prairies region?
(a) Mississippi-Missouri rivers
(b) Amazon river
(c) Nile river
(d) Niger river.
Answer:
(a) Mississippi-Missouri rivers.

Class 7 Geography Chapter 9 Extra Questions and Answers Life in the Temperate Grasslands

4. Which one of the following is the local winds that blows in the Prairies?
(a) Khamsin
(b) Mistral
(c) Loo
(d) Chinook.
Answer:
(d) Chinook.

5. Which one of the following is the major crop of the Prairies?
(a) Wheat
(b) Maize
(c) Cotton
(d) Jute.
Answer:
(b) Maize.

6. Which one of the following terms is used for the large cattle farms of Prairies?
(a) Farm houses
(b) Thatched houses
(c) Ranches
(d) Farms for cattle.
Answer:
(c) Ranches.

7. It is the American buffalo of the Prairies;
(a) Bison
(b) Coyotes
(c) Gophers
(d) Prairie dog.
Answer:
(a) Bison.

8. Which one of the following countries of the world lies in the Prairies?
(a) Brazil and Venezuela
(b) Canada and USA
(c) Alaska and California
(d) Ecuador and Chile.
Answer:
(b) Canada and USA.

9. The Prairies are also known as;
(а) wheat bowl of the world
(b) rice bowl of the world
(c) sugar bowl of the world
(d) granaries of the world.
Answer:
(d) granaries of the world.

Class 7 Geography Chapter 9 Extra Questions and Answers Life in the Temperate Grasslands

10. The temperate grassland of South Africa is;
(a) steppes
(b) prairies
(c) veld
(d) downs.
Answer:
(c) veld.

11. Why does veld experience mild climate?
(а) Due to the influence of the Indian ocean.
(b)Due to the influence of Pacific ocean
(c) Due to the influence of Atlantic ocean
(d) Due to the influence of Arctic ocean.
Answer:
(а) Due to the influence of the Indian ocean.

12. In the high veld, which one of th& following natural vegetation is found?
(а) Cotton
(b) Alfa-Alfa
(c) Soyabean
(d) Acacia and Maroola.
Answer:
(d) Acacia and Maroola.

13. Which one of the following is the main activities of Velds?
(а) Farming 1
(b) Mining
(c) Cattle rearing and mining
(d) Agricultural activities.
Answer:
(c) Cattle rearing and mining.

14. Which one of the following is the popular species of Velds?
(a) Elephant
(b) Reptiles
(c) Cattle
(d) Merino sheep.
Answer:
(d) Merino sheep.

15. Which one of the following is known as the gold capital of the world?
(a) Kimberley
(b) Johannesburg
(c) Pretoria
(d) Drakensberg.
Answer:
(b) Johannesburg.

Class 7 Geography Chapter 9 Extra Questions and Answers Life in the Temperate Grasslands

16. Which one of the following is famous for the diamond mine?
(a) Kimberley
(b) Pretoria
(c) Johannesburg
(d) Nigeria
Answer:
(a) Kimberley.

Extra Questions for Class 7 Social Science

I Want Something in a Cage Extra Questions and Answers Class 7 English An Alien Hand

Online Education for I Want Something in a Cage Extra Questions and Answers Class 7 English An Alien Hand

Here we are providing Online Education for I Want Something in a Cage Extra Questions and Answers Class 7 English An Alien Hand, Extra Questions for Class 7 English was designed by subject expert teachers. https://ncertmcq.com/extra-questions-for-class-7-english/

We have created the most comprehensive NCERT Solutions for Class 7 English Chapter 6 I Want Something in a Cage Question Answer. These Questions and Answers are help to score more marks in your board Exams.

Online Education for I Want Something in a Cage Extra Questions and Answers Class 7 English An Alien Hand

I Want Something in a Cage Extra Questions and Answers Short Answer Type

I Want Something In A Cage Extra Questions Class 7 Question 1.
What has amused the shopkeeper?
Answer:
The unusual behaviour of the customer has shocked him.

Extra Questions Of I Want Something In A Cage Class 7 Question 2.
How has the smell of the departed customer different?
Answer:
The smell of the departed customer was different as it was ‘musty smell of an abandoned and haunted house’.

I Want Something In A Cage Class 7 Extra Questions Question 3.
Describe the appearance of the shop owner?
Answer:
Mr Purcell was a small, fussy man having red cheeks and big bellied with large eyes.

I Want Something In A Cage Questions Answers Class 7 Question 4.
What did he sell in his pet shop?
Answer:
He sold cats, dogs and monkeys. He dealt in fish food and bird seed. He displayed long rows of ornate and gilded cages.

I Want Something In A Cage Question Answer Class 7 Question 5.
Explain ‘endless flicker of life’.
Answer:
Mr Purcell caged various small animals and birds that kept on making strange noises all the time. They whisper, rustle, squeaks, scampers.

I Want Something In A Cage Extra Questions Answers Class 7 Question 6.
How do Mr Purcell greet the visitors?
Answer:
Mr Purcell smile, briskly rub his hands and emphatically shake his head.

Class 7 English I Want Something In A Cage Extra Questions Question 7.
What was his routine in the shop?
Answer:
Mr Purcell usually perdh on a high stool behind the counter and read newspaper.

I Want Something In A Cage Short Question Answer Class 7 Question 8.
How did he come to know about a visitor’s entry?
Answer:
Mr Purcell get to know through ringing of the bell hung at the entrance door.

Question Answer Of I Want Something In A Cage Class 7 Question 9.
What did the cpstomers wear?
Answer:
The customer wore squeaky shoes, ill-fitted shoes with close cropped hair.

I Want Something In A Cage Extra Question Answer Class 7 Question 10.
Why did he come to the shop?
Answer:
He came to buy two doves.

Question 11.
Why was he ‘crestfallen’?
Answer:
Mr Purcell told him the price of two doves but he had five dollar bill only.

Question 12.
How long did it take him to collect the money?
Answer:
The customer informed that it took ten years to him to collect the money.

Question 13.
Why was not the customer interested in listening to advice?
Answer:
The customer did not listen to the advice of Mr Purcell as he was going to free the doves from cage.

Question 14.
Why had the merchant’s brow ‘puckered with perplexity’?
Answer:
The merchant’s eye brows were raised because the behaviour of the customer was unusual. He bargained. the price persuading Mr Purcell to sell the birds for five dollars only and then set them free.

I Want Something in a Cage Extra Questions and Answers Long Answer Type

Question 1.
The visitor invested his ten years saving on releasing the birds. Why?
Answer:
The visitor had scarified his ten years income so as to free birds. He entered the shop with an intention to purchase the birds, he could afford with a five dollar bill. He showed least interest in talking to the shop owner. As soon as he bought the doves, he opens the cage and set the birds free. He seemed to have satisfaction in making them free.
This showed his love for freedom of birds. His appearance clearly speaks about his poverty. Yet he ’ sacrificed his possession displaying the beauty of his character, generosity and love.

Question 2.
‘Freedom is everyone’s right’. Comment.
Answer:
Everyone is born free in nature under the sun. However, his freedom is compromised by his or her own weakness. Mr Purcell was constantly surrounded by the sound of movement and chirpings. Yet he could liberate himself from his weakness to earn his living. He made money out of compromising his freedom. He was shocked by the simplicity and grace of a freedom preacher. Likewise we humans too sacrifice big for small.

Question 3.
Do you think the atmosphere of Mr Purcell’s shop was cheerful or depressing? Give reasons for your answers.
Answer:
The atmosphere in Mr Pur’cell’s shop was dull and cheerless. The shop was full of movements of noise making birds and pet animals. Mr Purcell had become used to that noise. But the customer wondered how the owner put up with that noise.

Question 4.
Describe the stranger who came to the pet shop. What did he want?
Answer:
The stranger was peculiar man who was wearing shiny shoes and cheap, ill-fitted but a new suit. He had a I hutting glance and close cropped hair. He wanted something small in a cage with wings.

Question 5.
(i) The man insisted on buying the doves because he was fond of birds. Do you agree?
(ii) How had he earned the five dollars he had?
Answer:
(i) No, the man was neither fond of birds nor did he insist on buying the fair doves. He only wanted some birds in a cage.
(ii) The man had spent ten years in prison. He had to work hard. He was paid only half a dollar per year. He left the jail with just 5 dollars and a cheap suit.

Question 6.
Was the customer interested in the care and feeding of the doves he had bought? If not, why not?
Answer:
The stranger was not interested in the care and feeding of the doves because he wanted to set them free.

Question 7.
Why, in your opinion, did the man set the doves free?
Answer:
In my opinion, the man must had set the doves free because he himself had been in jail for ten years. He had sympathy for the birds and knew the pain of being imprisoned against the wishes. He wanted to see them flying and enjoying their freedom that is why he bought something with the wings. He wanted to smell the happiness of freedom from cages by setting the doves free.

Question 8.
Why did it make Mr Purcell feel ‘Vaguely insulted”?
Answer:
Mr Purcell felt insulted because he had reduced the price of the doves and still made profit. He felt small to see the customer’s love for freedom and his great sacrifice.

Acids, Bases and Salts Class 7 Extra Questions and Answers Science Chapter 5

Online Education for Acids, Bases and Salts Class 7 Extra Questions and Answers Science Chapter 5

Here we are providing Online Education for Heat Acids, Bases and Salts Class 7 Extra Questions and Answers Science Chapter 5 was designed by subject expert teachers. https://ncertmcq.com/extra-questions-for-class-7-science/

Online Education for Class 7 Science Chapter 5 Extra Questions and Answers Acids, Bases and Salts

Class 7 Science Chapter 5 Extra Questions And Answers Question 1.
What is common in the sour-tasting substances?
Answer:
They contain acids.

Acids Bases And Salts Class 7 Extra Questions And Answers Question 2.
Name two naturally occurring indicators.
Answer:
Turmeric, litmus.

Acid Bases And Salts Class 7 Extra Questions Question 3.
Name some common acids and bases and their sources.

Name of acid Found in
Acetic acid Vinegar
Formic acid Ant’s sting
Citric acid, Citrus fruits such as oranges, lemons, etc.
Lactic acid Curd
Oxalic acid Spinach
Ascorbic acid (Vitamin C) Amla, Citrus fruits
Tartaric acid Tamarind, grapes, unripe mangoes, etc.
All the acids mentioned above occur in nature.
Name of base Found in
Calcium hydroxide Lime water
Ammonium hydroxide Window cleaner
Sodium hydroxide / Potassium hydroxide Soap
Magnesium hydroxide Milk of magnesia

Acids, Bases And Salts Class 7 Extra Questions And Answers Question 4.
What are the various colours of litmus paper?
Answer:
Red and blue.

Acids, Bases and Salts Class 7 Extra Questions and Answers Science Chapter 5

Ncert Class 7 Science Chapter 5 Extra Questions Question 5.
What is the colour of litmus in distilled water?
Answer:
Mauve (purple).

Class 7 Acids Bases And Salts Extra Questions Question 6.
Why acids and bases should be handled with care.?
Answer:
Great care should be taken while handling laboratory acids and bases because these are corrosive in nature, irritating and harmful to skin.

Class 7 Science Ch 5 Extra Questions Question 7.
How is the soil treated when it becomes too acidic?
Answer:
When the soil becomes too acidic, it is treated with bases like quick lime (calcium oxide) or slaked lime (calcium hydroxide).

Acid Base And Salts Class 7 Extra Questions Question 8.
What is done if soil becomes too basic?
Answer:
If the soil becomes too basic, organic matter is added to it. Organic matter releases acids which neutralises the basic nature of the soil.

Class 7 Science Chapter 5 Extra Questions Question 9.
Name one antacid.
Answer:
Milk of magnesia, which contains magnesium hydroxide.

Extra Questions On Acids, Bases And Salts Class 7 Question 10.
What does calamine solution contain?
Answer:
Zinc Carbonate.

Extra Questions Of Acids Bases And Salts Class 7 Question 11.
How is lime water prepared?
Answer:
To prepare limewater, some lime (chuna) is dissolved in water. The solution is stirred and is left for some time. Later a little clear solution from the top is decanted. This is lime water.

Acids, Bases and Salts Class 7 Extra Questions and Answers Science Chapter 5

Acids, Bases And Salts Class 7 Questions And Answers Pdf Question 12.
How does rain become acidic?
Answer:
The rain becomes acidic because carbon dioxide, sulphur dioxide and nitrogen dioxide (which are released into the air as pollutants) dissolve in raindrops to form carbonic acid, sulphuric acid and nitric acid respectively, making rainwater acidic.

Questions On Acids, Bases And Salts Class 7 Question 13.
How is an ant’s sting relieved?
Answer:
When an ant bites, it injects an acidic liquid into the skin. The effect of the sting can be neutralised by rubbing moist baking soda (sodium hydrogen carbonate) or calamine solution which contain zinc carbonate as both of these are bases.

Extra Questions For Class 7 Science Acids Bases And Salts Question 14.
What should be done to neutralise acidic factory wastes and why?
Answer:
The wastes of many factories contain acids. If they are allowed to flow into the water bodies, the acids will kill fish and other organisms. The factory wastes are, therefore, neutralised by adding basic substances.

Class 7 Science Acids Bases And Salts Extra Questions Question 15.
Write a brief note on litmus?
Answer:
The most commonly used natural indicator is litmus. It is extracted from lichens. It has a mauve (purple) colour in distilled water. When added to an acidic solution, it turns red and when added to a basic solution, it turns blue. It is available in the form of a solution, or in the form of strips of paper, known as litmus paper. Generally, it is available as red and blue litmus paper.

Class 7 Chapter 5 Science Extra Questions Question 16.
I am not getting the same result when using baking soda or dry litmus paper. Why?
Answer:
Substances show their acidic or basic characteristics in solution or molten state. Therefore, instead of using dry baking soda, one should use its solution for testing their chemical nature.

Acids, Bases and Salts Class 7 Extra Questions and Answers Science Chapter 5

Questions On Acids Bases And Salts Class 7 Question 17.
Explain why:
(a) An antacid tablet is taken when you suffer from acidity.
(b) Calamine solution is applied on the skin when an ant bites.
(c) Factory waste is neutralised before disposing it into the water bodies.
Answer:
(a) Antacids are nothing but bases. When there is excess of acid in stomach, antacids are taken. Antacid neutralises acids and relieves us.

(b) Ant injects an acid during bite which causes the burning sensation. Calamine solution is basic in nature. It neutralises the acid and relieves us from the pain.

(c) Factory wastes contain both acidic and basic substances. These are harmful for the organisms living in water (fishes etc). So, these are neutralised.

Class 7 Science Chapter 5 Acids Bases And Salts Extra Questions Question 18.
Three liquids are given to you. One is hydrochloric acid, another is sodium hydroxide and third is a sugar solution. How will you identify them? You have only turmeric indicator.
Answer:
Turmeric solution turns red on coming in contact with bases. It is not affected by acids and neutral substances. At first we will identify the base. Samples of the given three liquids are tested by adding a small quantity of turmeric to them.

The liquid in which the colour of turmeric changes from yellow to red, is a base, i.e., sodium hydroxide solution. Then, one of the remaining two unidentified solutions is added to it gradually. If the solution turns yellow again, the added liquid is hydrochloric acid (because it neutralises the base). Otherwise, the added liquid is sugar solution.

Extra Questions On Acids Bases And Salts Class 7 Question 19.
Dorji has a few bottles of soft drinks in his restaurant. But, unfortunately, these are not labelled. He has to serve the drinks on the demand of customers. One customer wants acidic drink, another wants basic and third one wants neutral drink. How will Dorji decide which drink is to be served to whom?
Answer:
He can decide by the use of indicators. If the sample of drink turns red litmus blue, it is basic. If it turns blue litmus red, it is acidic. If it does not affect litmus, it is neutral.

Acids, Bases and Salts Class 7 Extra Questions and Answers Science Chapter 5

Chapter 5 Science Class 7 Extra Questions Question 20.
Describe the process of neutralisation with the help of an example.
Answer:
The reaction between an acid and a base is known as neutralisation. Salt and water are produced in this process with the evolution of heat.
Acid + Base → Salt + Water (Heat is also evolved in this process)
The following reaction is an example:
Hydrochloric acid (HCI) + Sodium hydroxide
(NaOH) →Sodium chloride (NaCI) + Water (H2O)

Experiments
(i)
Aim: To test substances to check whether they are acids, bases or neutrals. .
Requirements: Red and blue litmus papers, sample, test tubes, water. ‘

Procedures :

  • Samples are taken in test tubes and some water is added.
  • One strip each of red and blue litmus is dipped into each test tubes.

Observation and Conclusion :
Observation Conclusion

  • Red litmus turns blue basic
  • Blue litmus turns red acid
  • No Change neutral.

(2)
Aim: To observe neutralisation reaction.
Requirements: Lime water, vinegar, litmus solution, beaker, dropper.
Procedure :

  • Vinegar is taken in a beaker.
  • Some litmus is poured into it.
  • Now lime water is added drop by drop.

Observation :
The solution turns red as soon as litmus solution is poured.
As we go on adding drops of limewater, the redness decreases.
At a certain stage, the solution turns purple. Further addition, makes the solution blue.
Conclusion: The lime water neutralised vinegar.

Acids, Bases and Salts Class 7 Extra Questions and Answers Science Chapter 5

Multiple Choice Questions

1. If a drop of lemon juice, mixed with some water is dropped on a strip of blue litmus paper:
(i) the paper will turn red.
(ii) the paper will turn black.
(iii) the paper will turn white.
(iv) there will be no change on the litmus paper.
Answer:
(i) the paper will turn red.

2. Tap water is neutral while vinegar is acidic in nature. If in a beaker same quantity of tap water and vinegar are mixed together and red and blue litmus papers are dipped into it one by one then :
(i) there will be no effect on any of these two litmus papers.
(ii) the red litmus paper turns blue.
(iii) the blue litmus paper turns red.
(iv) there will be no effect on blue litmus paper.
Answer:
(iii) the blue litmus paper turns red.

3. Which of the following is acidic in nature?
(i) Sugar solution
(ii) Salt solution
(iii) Shampoo
(iv) Aerated drink.
Answer:
(iv) Aerated drink.

4. Which of the following is basic in nature?
(i) Amla
(ii) Vinegar
(iii) Limewater
(iv) Curd.
Answer:
(iii) Limewater.

Acids, Bases and Salts Class 7 Extra Questions and Answers Science Chapter 5

5. Which of the following is neutral in nature?
(i) Detergent solution
(ii) Milk of magnesia
(iii) Tap water
(iv) Lemon juice
Answer:
(iii) Tap water.

6. When a few drops of soap solution are mixed in a yellow coloured solution, the solution turned brownish red. The yellow coloured solution may be :
(i) a solution of a yellow dye
(ii) a solution of besan
(iii) turmeric solution
(iv) mustard oil.
Answer:
(iii) turmeric solution.

7. A student performed the following steps to prepare an indicator of China rose:
A. Collected some fresh China rose petals in a beaker.
B. Added some cold water in it.
C. Kept the mixture for some time till water became coloured.
D. Extracted the coloured water in a separate beaker. This will work as an indicator.
Answer:
B. Added some cold water in it.

8. Which of the steps mentioned above is wrong?
(i) A
(ii) B
(iii) C
(iv) D.
Answer:
(ii) B.

9. China rose indicator turns acidic solutions to :
(i) red
(ii) magenta
(iii) green
(iv) blue.
Answer:
(iii) green.

Acids, Bases and Salts Class 7 Extra Questions and Answers Science Chapter 5

10. China rose indicator turns basic solutions to :
(i) magenta
(ii) yellow
(iii) green
(iv) blue.
Answer:
(iv) blue.

11. Few drops of sugar solution are added into the indicator of China rose taken in a test tube. The colour of the solution will :
(i) become red
(ii) become green
(iii) become magenta
(iv) remains the same.
Answer:
(iii) become magenta.

12. A small quantity of China rose indicator is taken into a test tube and a few drops of ammonium hydroxide are mixed into it. The colour of the solution will turn :
(i) magenta
(ii)blue
(iii) green
(iv) yellow.
Answer:
(i) magenta.

13. A blue litmus paper is dipped into the solution of nitric acid. The paper :
(i) turns red
(ii) turns white
(iii) turns green
(iv) remains the same.
Answer:
(i) turns red.

Acids, Bases and Salts Class 7 Extra Questions and Answers Science Chapter 5

14. Adrop of lime water is put on a strip of turmeric paper. It will:
(i) turn red
(ii) turn blue
(iii) turn green
(iv) remain the same.
Answer:
(ii) turn blue

15. A student added dilute sulphuric acid to lime water. The reaction mixture :
(i) will become cold
(ii) will become hot
(iii) will either become hot or cold
(iv) will remain the same.
Answer:
(ii) will become hot.

16. Which of the following statements is true regarding neutralisation reaction?
(i) It produces cooling effect.
(ii) Salt is produced.
(iii) The reaction mixture is always acidic.
(iv) The reaction mixture is always basic.
Answer:
(ii) Salt is produced.

Keyword:

→ Acid: An acid is a substance that tastes sour and turns the blue litmus paper red.

→ Acidic: The chemical nature of acids is called acidic.

→ Base: Substances which are bitter in taste and feel soapy on touching are known as bases.

→ Basic: The nature of base is said to be basic.

→ Indicator: Special type of substances are used to test whether a substance is acidic or basic. These substances are known as indicators.

→ Neutral solution: The solutions which do not change the colour of either red or blue litmus are known as neutral.

Acids, Bases and Salts Class 7 Extra Questions and Answers Science Chapter 5

→ Neutralisation: The reaction between an acid and a base is known as neutralisation. Salt and water are produced in this process with the evolution of heat.

→ Salt: In neutralisation reaction, a new substance is formed. This is called salt.

Extra Questions for Class 7 Science

Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6

Online Education for Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6

Here we are providing Online Education for Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6 was designed by subject expert teachers. https://ncertmcq.com/extra-questions-for-class-7-science/

Online Education for Class 7 Science Chapter 6 Extra Questions and Answers Physical and Chemical Changes

Physical And Chemical Changes Class 7 Worksheet With Answers Question 1.
Why is cutting of paper a physical change?
Answer:
Because properties of paper do not change on cutting.

Physical And Chemical Changes Class 7 Extra Questions With Answers Question 2.
A piece of chalk becomes powdery on pressing. Which type of change is it?
Answer:
Physical.

Class 7 Science Chapter 6 Extra Questions Question 3.
What is freezing mixture?
Answer:
A mixture of ice and common salt.

Class 7 Physical And Chemical Changes Extra Questions Question 4.
What happens when water is heated?
Answer:
It gets converted into vapours.

Chapter 6 Science Class 7 Extra Questions Question 5.
What are physical properties?
Answer:
Properties such as shape, size, colour and state of a substance are called its physical properties.

Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6

Class 7 Science Ch 6 Extra Questions Question 6.
In which type of change, no new substance is formed?
Answer:
Physical change.

Physical And Chemical Changes Class 7 Questions And Answers Question 7.
Write equation for burning of magnesium ribbon.
Answer:
Magnesium (Mg) + Oxygen (O2) → Magnesium Oxide (MgO)

Ncert Solutions For Class 7 Science Chapter 6 Extra Questions Question 8.
Which type of change is explosion of a firework?
Answer:
Chemical change.

Class 7 Science Chapter 6 Extra Questions And Answers Question 9.
What happens if a cut apple is kept open for a while?
Answer:
The open surface acquires a brown colour.

Questions On Physical And Chemical Changes Class 7 Question 10.
Write the necessary conditions for rusting.
Answer:
Presence of water vapour and air.

Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6

Ncert Class 7 Science Chapter 6 Extra Questions Question 11.
Is melting of ice a chemical change? Give reason.
Answer:
No. When ice melts into water, no new substance is formed. Only the physical form of ice is changed. So, it is not a chemical change.

Physical And Chemical Changes Extra Questions Question 12.
What happens when a hack-saw blade is heated?
Answer:
When a hack-saw blade is heated, it becomes red in colour. It starts emitting light.

Physical And Chemical Changes Class 7 Extra Questions Question 13.
What happens when magnesium oxide is dissolved in water? Write the chemical equation for the reaction.
Answer:
On dissolving magnesium oxide in water, magnesium hydroxide is produced.
This chemical change can be written in the form of the following equation :
Magnesium oxide (MgO) + Water (H2O) → Magnesium hydroxide [Mg(OH)].

Extra Questions Of Physical And Chemical Changes Class 7 Question 14.
Write two importances of chemical changes.
Answer:

  1. Extraction of all metals requires chemical changes.
  2. Useful new materials, such as plastics and detergents, are produced by chemical reactions.

Class 7 Chapter 6 Science Extra Questions Question 15.
Why is it advised not to play with fireworks?
Answer:
Explosion of a firework is a chemical change. Such an explosion produces heat, light, sound and harmful gases that pollute the atmosphere. That is why it is advised not to play with fireworks.

Chemical Substances And Processes Class 7 Extra Questions Question 16.
What is stainless steel?
Answer:
Stainless steel is an alloy of iron which does not rust, hence the name stainless steel. It is made by mixing iron with carbon and metals like chromium, nickel and manganese.

Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6

Extra Questions On Physical And Chemical Changes Class 7 Question 17.
What happens when iron nail is dipped into copper sulphate solution?
Answer:
The blue colour solution of copper sulphate changes into a green coloured solution. The change of colour of the solution front blue to green is due to the formation of iron\ sulphate, a new substance. The brown substance \deposit on the iron nail is copper, another new substance. We can write the reaction as :
Copper Sulphate solution (blue) + Iron → Jkon Sulphate solution (green) + Copper (brown deposit).

Class 7 Science Physical And Chemical Changes Extra Questions Question 18.
What happens when carbon dioxide is passed through lime water? Give chemical equation.
Answer:
When carbon dioxide is passed through lime water, calcium carbonate is formed, which makes lime water milky. The turning of lime water milky is a standard test of presence of carbon dioxide.
Carbon dioxide (CO2) + Lime water [Ca(OH)2] → Calcium Carbonate (CaCO3 + Water (H2O).

Science Class 7 Chapter 6 Extra Questions Question 19.
What does ozone do for us?
Answer:
It protects us from the harmful ultraviolet radiations which come from the sun. Ozone absorbs this radiation and breaks down to oxygen. If ultraviolet radiations were not absorbed by ozone, they would reach the earth’s surface and cause harm to us and other life forms. Ozone acts as a natural shield against these radiations.

Class 7th Science Chapter 6 Extra Questions Question 20.
Why has a fraction of ships iron to be replaced every year?
Answer:
Ships are made of iron and a part of them remains underwater. On the part above water also, water drops keep clinging to the ship’s outer surface. Moreover, the water of the sea contains many salts. The saltwater makes the process of rust formation faster. Therefore, ships suffer a lot of damage from rusting in spite of being painted. So much so, that a fraction of ship’s iron has to be replaced every year.

Question 21.
What happens when baking soda is added to vinegar and the resulting gas is passed through lime water?
Answer:
On adding baking soda to vinegar, a hissing sound is heard and bubbles are seen coming out. When this gas is passed through lime water, it turns milky.
The change in the test tube is as follows :
Vinegar (Acetic acid) + Baking soda (Sodium hydrogen carbonate) → Carbon dioxide + other substances

The reaction between carbon dioxide and lime water is as follows :
Carbon dioxide (CO2) + Lime water [Ca(OH)2] → Calcium Carbonate (CaCO3) + Water (H2O)
When carbon dioxide is passed through lime water, calcium carbonate is formed, which makes lime water milky. The turning of lime water milky is a standard test of carbon dioxide.

Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6

Question 22.
Make a list of ten changes you have noticed around you.
Answer:

  • lighting of bulb
  • moving of fan
  • sound produced by radio
  • changing of day and night
  • changing of the shape of the moon
  • changing of size of the puppy
  • blooming of flowers
  • melting of ice
  • vaporisation of water
  • lightning.

Question 23.
When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.
Answer:
Physical changes: The wax of the candle first melts, then vaporises and burns.
Melting of wax is a physical change since molten wax can be solidified back to the wax and there is no new substance formed.

Chemical changes: When wax vapours burn, smoke and carbon dioxide are formed which are new substances. So, it is a chemical change.

Example: Lightning torch bulb using dry cell is another example where both physical and chemical changes take place.

The lighting of the bulb is physical change since no new substance is formed there. The current from the dry cell is obtained by the chemical substances inside it. Here, the chemicals in the cell react with each other and produce light substances and hence the cell ultimately becomes useless. So, it is a chemical change.

Question 24.
How would you show that setting of curd is a chemical change?
Answer:
When soipe sour substance is added to milk or kept overnight, it turns into curd. The curd in no way can be converted into milk. Curd is a different substance than milk. So, formation of curd is a chemical change.

Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6

Question 25.
Explain why burning of wood and cutting it into small pieces are considered as two different types of changes.
Answer:
Burning of wood produces ash and smoke. Hence the properties of wood are changed and new substances are formed. So, it is a chemical change.

When a log of wood is cut into small pieces, no new substance is formed there. Each small piece bears the properties of wood. So, it is a physical change.

Question 26.
Describe how crystals of copper sulphate are prepared.
Answer:
A cupful of water is taken in a beaker and a few drops of dilute sulphuric acid are added into it. The water is heated. When it starts boiling copper sulphate powder is added slowly while stirring continuously. Copper sulphate powder is added continuously till no more powder can be dissolved. The solution is filtered and allowed to cool down. Crystals of copper sulphate slowly form at the bottom of the beaker.

Question 27.
Describe how crystals of copper sulphate are prepared.
Answer:
A cupful of water is taken in a beaker and a few drops of dilute sulphuric acid are added into it. The water is heated. When it starts boiling copper sulphate powder is added slowly while stirring continuously. Copper sulphate powder is added continuously till no more powder can be dissolved. The solution is filtered and allowed to cóol down. Crystals of copper sulphate slowly form at the bottom of the beaker.
Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6 1

Question 28.
Explain how painting1of an iron gate prevents it from rusting
Answer:
For rusting, iron must be In contact with both air and moisture. When iron gate is painted, the layer of paint cuts the contact between air, moisture and iron. Thus, it prevents rusting.

Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6

Question 29.
Explain why rusting of iron objects is faster in coastal areas than in deserts.
Answer:
In coastal areas, there is more moisture in air due to the presence of sea. But in deserts, there is a scarcity of water and hence air is almost dry there. Both air and moisture are necessary conditions for rusting. So, rusting is faster in coastal areas than in deserts.

Question 30.
Describe two changes that are harmful. Explain why you consider them harmful? How can you prevent them?
Answer:
(i) Rusting: If a piece of iron is left in open for some time, it acquires a film of brownish substance. This substance is called rust and the process is called rusting.
Rusting is harmful because it destroys the iron objects. Iron is the most widely used metal and so rusting is such a serious problem. Prevention of rusting: Rusting can be prevented by preventing iron particles from coming in contact with oxygen, or water, or both.

  • One simple way is to apply a coat of paint or grease. In fact, these coats should be applied regularly to prevent rusting.
  • Another way is galvanisation, i.e., to deposit a layer of a metal like chromium or zinc on. iron.

(ii) Spoilage of food: Food items when kept carelessly, get spoiled. This is a chemical change and obviously harmful for us. Food is spoiled by microorganisms.

Prevention of food spoilage: Microorganisms do not survive at high or low temperatures. So, food items stored in refrigerator do not spoil. Also we should keep them covered so that microorganisms do not get any chance to enter and spoil them.

Question 31.
Prepare crystals of alum.
Answer:
A cupful of water is taken in a beaker and a few drops of dilute sulphuric acid are added into it. The water is heated. When it starts boiling alum powder is added slowly while stirring continuously. Alum powder is added continuously till no more powder can be dissolved. The solution is filtered and allowed to cool down. Crystals of alum slowly form at the bottom of the beaker.
Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6 2

Question 32.
Collect information about the types of fuels used for cooking in your area. Discuss with your teachers /parents? others which fuels are less polluting and why?
Answer:
The different fuels used for cooking are wood, charcoal, cow-dung cak&, kerosene, biogas, LPG, etc.
Among all these, biogas and LPG are least polluting. Both of these burn completely and do not give smoke. Also, they do not leave any residue (ash, unburnt part, etc.) after burning. So, these fuels are less polluting.

Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6

Experiment:

Aim: To make crystals of copper sulphate from its powder.
Requirements: Beaker, burner, tripod stand, wire gauge, spoon, copper sulphate powder, water, filter paper, funnel, stand.

Procedure :

  • The beaker is half-filled with water.

Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6 3

  • It is placed over the burner with the help of tripod stand and wire gauge.
  • The burner is lighted.
  • When the water starts boiling, copper sulphate powder is added into it and stirred.
  • Powder is added continuously till no more powder dissolve further.
  • The solution is filtered.
  • The filtrate is kept undisturbed and allowed to cool down.

Observation: Crystals of copper sulphate get deposited at the bottom of the beaker.

Multiple Choice Questions

1. When you cut a piece of paper into four square pieces, which of the following happens?
(i) There is a change in property of paper.
(ii) The paper can’t be got back by any method.
(iii) Change in physical properties takes place like shape and size.
(iv) None of the above.
Answer:
(iii) Change in physical properties takes place like shape and size.

2. When the paper is cut in pieces, what can be the changes?
(i) changes in shape and size
(ii) changes in state
(iii) changes in colour
(iv) changes in position
Answer:
(i) changes in shape and size.

3. The chalk can again be reversed from the chalk dust. Which type of change is this?
(i) Chemical change
(ii) Physical change
(iii) Both physical and chemical change
(iv) None of these.
Answer:
(iii) Both physical and chemical change.

Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6

4. On placing a mixture of ice and water in a freezer, water becomes solid ice once again. This type of change is called a :
(i) physical change
(ii) chemical change
(iii) periodic change
(iv) none of these.
Answer:
(i) physical change.

5. Hold an inverted pan by its handle over the steam at some distance from the boiling water. Observe the inner surface of the pan. What will you find?
(i) Entrapped steam.
(ii) Condensed water droplets at the surface.
(iii) Water vapours stuck to surface.
(iv) None of these.
Answer:
(ii) Condensed water droplets at the surface.

6. Steam get converted back to water by the process of :
(i) evaporation
(ii) condensation
(iii) sublimation
(iv) vaporisation.
Answer:
(ii) condensation.

Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6

7. When the tip of the hack-saw blade is kept on the flame, what changes occur?
(i) Change in shape
(ii) Change in state
(iii) Change in colour
(iv) Chemical change
Answer:
(iii) Change in colour.

8. When it (hack-saw blade) is cooled, what happens?
(i) It gets back to its original colour.
(ii) Its colour faints a bit.
(iii) It becomes extra dark in colour.
(iv) It becomes colourless.
Answer:
(i) It gets back to its original colour.

9. A physical change is generally :
(i) irreversible
(ii) reversible
(iii) change in composition of the object
(iv) none of these.
Answer:
(ii) reversible.

10. When magnesium is burnt in air with a brilliant white light, it forms :
(i) magnesium carbonate
(ii) magnesium hydroxide
(iii) magnesium oxide
(iv) magnesium cyanide.
Answer:
(iii) magnesium oxide.

11. When magnesium oxide is mixed with small quantity of water, it forms magnesium hydroxide, which is a/an :
(i) acid
(ii) base
(iii) salt
(iv) none of these.
Answer:
(ii) base.

12. Magnesium hydroxide, formed by dissolving magnesium oxide in water turns :
(i) red litmus blue
(ii) blue litmus red
(iii) red litmus green
(iv) no change.
Answer:
(i) red litmus blue.

Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6

13. Formula of magnesium oxide is :
(i) MgO2
(ii) MgO
(iii) MnO
(iv)MnO2.
Answer:
(ii) MgO.

14. Formulh of magnesium hydroxide is
(i) Mg(OH)2
(ii) MgOH
(iii) Mn(OH)2
(iv) MnOH.
Answer:
(i) Mg(OH)2.

15. The colour of copper sulphate solution is :
(i) blue
(ii) green
(iii) grey
(iv) brown.
Answer:
(i) blue.

16. The colour of iron sulphate solution is :
(i) blue
(ii) green
(iii) black
(iv) brown.
Answer:
(ii) green.

17. A few drops of dilute sulphuric acid are added into a solution of copper sulphate and a blade is put into it. The brown deposit on the shaving blade is :
(i) deposit of iron
(ii) deposit of iron rust
(iii) deposit of sulphur
(iv) deposit of copper.
Answer:
(iv) deposit of copper.

18. The change in the colour of copper sulphate solution, when blade is left in it for some time, is due to :
(i) reaction of copper sulphate with iron (blade)
(ii) reaction of sulphuric acid with iron (blade)
(iii) reaction of copper sulphate with sulphuric acid
(iv) none of these.
Answer:
(i) reaction of copper sulphate with iron (blade).

19. The end products of the reaction of copper sulphate solution and iron is/are :
(i) iron sulphate solution
(ii) copper
(iii) both iron sulphate solution and copper
(iv) copper and sulphuric acid.
Answer:
(iii) both iron sulphate solution and copper.

Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6

20. When a pinch of baking soda is added to a teaspoonful of vinegar, you would hear a hissing sound and see bubbles of a gas coming out. What reaction took place?
(i) Acetic acid + Sodium carbonate → Carbon dioxide + Other substances.
(ii) Acetic acid + Sodium hydrogen carbonate → Carbon dioxide + Other substances.
(iii) Acetic acid + Sodium hydrogen carbonate → Oxygen + other substances.
(iv) Acetic acid + Sodium carbonate → Oxygen + Other substances.
Answer:
(ii) Acetic acid + Sodium hydrogen carbonate → Carbon dioxide + Other substances.

21. On passing the gas evolved in the above-mentioned experiment through a solution of lime water, it turns milky. It is due to the formation of :
(i) calcium carbonate
(ii) calcium bicarbonate
(iii) calcium oxide
(iv) calcium hydroxide.
Answer:
(i) calcium carbonate.

22. Galvanisation is process of coating iron with for preventing rusting.
(i) paint
(ii) nickel
(iii) zinc
(iv) cadmium
Answer:
(iii) zinc.

Keywords:

→ Chemical change: The change in which substance(s) undergoes a change in their chemical properties or composition or both is called chemical change. Here, a new substance is formed.

→ Chemical reaction: It is a process, which changes the chemical properties or composition or both of substances.

Physical and Chemical Changes Class 7 Extra Questions and Answers Science Chapter 6

→ Crystallisation: The process of making large crystals of pure substances from their solution is known as crystallisation.

→ Galvanisation: The process of depositing a layer of zinc on iron is called galvanisation.

→ Physical change: A change in which a substance undergoes a change in its physical properties is called a physical change. This change may be reversible. Here, no new substance is formed.

→ Rusting: The process of corrosion of iron is known as rusting.

Extra Questions for Class 7 Science

Online Education NCERT Solutions for Class 7 Sanskrit Chapter 13 अमृतं संस्कृतम्

We have given detailed Online Education NCERT Solutions for Class 7 Sanskrit Ruchira Chapter 13 अमृतं संस्कृतम् Questions and Answers come in handy for quickly completing your homework.

Online Education NCERT Solutions for Class 7 Sanskrit Ruchira Chapter 13 अमृतं संस्कृतम्

Class 7 Sanskrit Chapter 13 अमृतं संस्कृतम् Textbook Questions and Answers

प्रश्न: 1.
उच्चारणं कुरुत- (उच्चारण कीजिए- Pronounce these.)

उपलब्धासु
सङ्गणकस्य
चिकित्साशास्त्रम्
वैशिष्ट्यम्
भूगोलशास्त्रम्
वाङ्मये
विद्यमानाः
अर्थशास्त्रम्
उत्तराणि:
छात्र ध्यानपूर्वक शुद्ध उच्चारण करें।

प्रश्न: 2.
प्रश्नानाम् एकपदेन उत्तराणि लिखत- (प्रश्नों के उत्तर एक शब्द में लिखिए- Answer the following questions in one word.)

(क) का भाषा प्राचीनतमा?
उत्तराणि:
संस्कृतभाषा

(ख) शून्यस्य प्रतिपादनं कः अकरोत् ?
उत्तराणि:
भास्कराचार्यः

(ग) कौटिल्येन रचितं शास्त्रं किम्?
उत्तराणि:
अर्थशास्त्रम्

(घ) कस्याः भाषायाः काव्यसौन्दर्यम् अनुपमम्?
उत्तराणि:
संस्कृतभाषायाः

(ङ) काः अभ्युदयाय प्रेरयिन्ति?
उत्तराणि:
सूक्तयः।

प्रश्न: 3.
प्रश्नानाम् उत्तराणि एकवाक्येन लिखत। (प्रश्नों के उत्तर एक वाक्य में लिखिए। Answer the questions in one sentence.)

(क) सङ्गणकस्य कृते सर्वोत्तमा भाषा का?
उत्तराणि:
सङ्गणकस्य कृते संस्कृतमेव सर्वोत्तमा भाषा।

(ख) संस्कृतस्य वाङ्मयं कैः समृद्धमस्ति?
उत्तराणि:
संस्कृतस्य वाङ्मयं वेदैः, पुराणैः, नीतिशास्त्रैः चिकित्साशास्त्रादिभिः च समृद्धमस्ति ।

(ग) संस्कृतम् किं शिक्षयति?
उत्तराणि:
संस्कृतभाषा शिक्षयति यत् सर्वभूतेषु आत्मवत् व्यवहारः कर्त्तव्यः। अथवा संस्कृतभाषा आत्मवत् सर्वभूतेषु व्यवहारं कर्तुम् शिक्षयति।

(घ) अस्माभिः संस्कृतं किमर्थं पठनीयम्?
उत्तराणि:
अस्माभिः संस्कृतं मनुष्यस्य समाजस्य च परिष्कारार्थम् पठनीयम्।

प्रश्नः 4.
इकारान्त-स्त्रीलिङ्गशब्दरूपम् अधिकृत्य रिक्तस्थानानि पूरयत- (इकारान्त-स्त्रीलिंग-शब्दरूप के आधार पर रिक्त स्थान भरिए- Fill in the blanks according to ‘इकारान्त’ feminine gender words.)

NCERT Solutions for Class 7 Sanskrit Chapter 13 अमृतं संस्कृतम् 1
उत्तराणि:
NCERT Solutions for Class 7 Sanskrit Chapter 13 अमृतं संस्कृतम् 2

प्रश्नः 5.
रेखाङ्कितानि पदानि अधिकृत्य प्रश्ननिर्माणं कुरुत- (रेखांकित पदों के आधार पर प्रश्ननिर्माण कीजिए Frame questions based on the underlined words.)

(क) संस्कृते ज्ञानविज्ञानयोः निधिः सुरक्षितोऽस्ति ।
उत्तराणि:
संस्कृते ज्ञानविज्ञानयोः का सुरक्षितोऽस्ति?

(ख) संस्कृतमेव सङ्गणकस्य कृते सर्वोत्तमा भाषा।
उत्तराणि:
संस्कृतमेव कस्य कृते सर्वोत्तमा भाषा?

(ग) शल्यक्रियायाः वर्णनं संस्कृतसाहित्ये अस्ति।
उत्तराणि:
शल्यक्रियायाः वर्णनं कस्मिन् अस्ति?

(घ) वरिष्ठान् प्रति अस्माभिः प्रियं व्यवहर्त्तव्यम्।
उत्तराणि:
कान् प्रति अस्माभिः प्रियं व्यवहर्त्तव्यम् ?

प्रश्नः 6.
उदाहरणानुसारं पदानां विभक्तिं वचनञ्च लिखत- (उदाहरण के अनुसार शब्दों के विभक्ति और वचन लिखिए- Write the inflexion and number of the words according to the example.)

NCERT Solutions for Class 7 Sanskrit Chapter 13 अमृतं संस्कृतम् 3
उत्तराणि:
NCERT Solutions for Class 7 Sanskrit Chapter 13 अमृतं संस्कृतम् 4

प्रश्न: 7.
यथायोग्यं संयोज्य लिखत- (यथा-उचित मिलाकर लिखिए- Match the following correctly.)

‘क’ – ‘ख’
कौटिल्येन – अभ्युदयाय प्रेरयन्ति।
चिकित्साशास्त्रे – ज्ञानविज्ञानपोषकम्।
शून्यस्य आविष्कर्ता – अर्थशास्त्रं रचितम्।
संस्कृतम् – चरकसुश्रुतयोः योगदानम्।
सूक्तयः – आर्यभटः।
उत्तराणि:
कौटिल्येन – अर्थशास्त्रं रचितम्।
चिकित्साशास्त्रे – चरकसुश्रुतयोः योगदानम्।
शून्यस्य आविष्कर्ता – आर्यभटः।
संस्कृतम् – ज्ञानविज्ञानपोषकम्।
सूक्तयः – अभ्युदयाय प्रेरयन्ति।

Class 7 Sanskrit Chapter 13 अमृतं संस्कृतम् Additional Important Questions and Answers

(1) पाठांशं पठत अधोदत्तान् च प्रश्नान् उत्तरत। (पाठांश को पढ़िए और निम्नलिखित प्रश्नों के उत्तर दीजिए। Read the extract and answer the questions that follow.)

इयं भाषा अतीव वैज्ञानिकी। केचन कथयन्ति यत् संस्कृतमेव सङ्गणकस्य कृते सर्वोत्तमा भाषा। अस्याः वाङ्मयं वेदैः, पुराणैः, नीतिशास्त्रैः चिकित्साशास्त्रादिभिश्च समृद्धमस्ति। कालिदासादीनां विश्वकवीनां काव्यसौन्दर्यम् अनुपमम्। कौटिल्यरचितम् अर्थशास्त्रं जगति प्रसिद्धमस्ति । गणितशास्त्रे ह्यह्यह्यह्यशून्यस्य प्रतिपादनं सर्वप्रथमम् आर्यभटटः अकरोत् । चिकित्साशास्त्रे चरकसुश्रुतयोः योगदानं विश्वप्रसिद्धम्। संस्कृते यानि अन्यानि शास्त्राणि विद्यन्ते तेषु वास्तुशास्त्रं, रसायनशास्त्रं, खगोलविज्ञानं, ज्योतिषशास्त्रं, विमानशास्त्रम् इत्यादीनि उल्लेखनीयानि।

I. एकपदेन उत्तरत-(एक शब्द में उत्तर दीजिए- Answer in one word.)

(i) संस्कृतभाषा कीदृशी?
उत्तराणि:
वैज्ञानिकी

(ii) अर्थशास्त्रं कस्य रचना?
उत्तराणि:
कौटिल्यस्य

(iii) कालीदासादीनां काव्यसौन्दर्य कीदृशम्?
उत्तराणि:
अनुपमम्

(iv) चिकित्साशास्त्रे कयोः योगदानम् विश्वप्रसिद्धम्?
उत्तराणि:
चरकसुश्रुतयोः

II. पूर्णवाक्येन उत्तरत- (पूर्ण वाक्य में उत्तर दीजिए- Answer in a complete sentence.)

(i) संस्कृतवाङ्मयम् कैः समृद्धम्?
उत्तराणि:
संस्कृतवाङ्मयम् वेदैः, पुराणैः, नीतिशास्त्रैः, चिकित्साशास्त्रादिभिः च समृद्धम्।

(ii) आर्यभटः किमर्थं प्रसिद्धः?
उत्तराणि:
आर्यभटः गणितशास्त्रे शून्यस्य प्रतिपादनम् सर्वप्रथमम् अकरोत्, एतदर्थं सः प्रसिद्धः?

III. भाषिककार्यम्
यथानिर्देशम् उत्तरत- (निर्देशानुसार उत्तर दीजिए- Answer as directed.)

1. ‘कौटिल्यरचितम् अर्थशास्त्रं जगति प्रसिद्धम् अस्ति’- इति वाक्ये – 

(i) ‘अस्ति’ क्रियापदस्य क: कर्ता? ……………. (कौटिल्यरचितम्, अर्थशास्त्रम्, प्रसिद्धम्)
उत्तराणि:
अर्थशास्त्रम्

(ii) पर्यायः कः? संसारे – …………….
उत्तराणि:
जगति

(iii) प्रसिद्धम् इति पदम् कस्य विशेषणम्?- …………….
उत्तराणि:
अर्थशास्त्रस्य/अर्थशास्त्रम् इति पदस्य

(iv) चरकसुश्रुतयोः- अत्र किं विभक्तिवचनम् (प्रथमा द्विवचनम्, षष्ठी द्विवचनम्, सप्तमी द्विवचनम्)
उत्तराणि:
षष्ठी द्विवचनम्

(2) परस्पर-मेलनं कृत्वा सूक्तीः पुनः लिखत- (परस्पर मेल करके सूक्तियाँ पुनः लिखिए Match the following quotes and rewrite them.)

(i) भारतस्य प्रतिष्ठे द्वे – जयते।
(ii) वसुधैव – कर्मसु कौशलम्।
(iii) योगः – अमृतमश्नुते।
(iv) सत्यमेव – संस्कृतं संस्कृतिः तथा।
(v) विद्यया – कुटुम्बकम्।
उत्तराणि:
(i) भारतस्य प्रतिष्ठे द्वे संस्कृतं संस्कृतिः तथा।
(ii) वसुधैव कुटुम्बकम्।
(iii) योगः कर्मसु कौशलम्।
(iv) सत्यमेव जयते।
(v) विद्ययाअमृतमश्नुते। (विद्यया + अमृतम् + अश्नुते)

(3) मञ्जूषातः उचितपदं चित्वा वाक्यानि पूरयत (मञ्जूषा से उचित पद चुनकर वाक्य पूरे कीजिए। Complete the sentences by picking out the appropriate word from the box.)

सूक्तयः, भाषाणाम्, प्राचीनतमा, संस्कृतम्, संस्कृतग्रन्थेषु |

(i) विश्वस्य उपलब्धासु भाषासु संस्कृतभाषा ।
(i) भाषा इयं अनेकासा . .जननी मता।
(iii) संस्कृते विद्यमानाः . अभ्युदयाय प्रेरयन्ति।
(iv) ……….. मानवजीवनाय विविधाः विषयाः समाविष्टाः।
(v) अस्माभिः ……… अवश्यमेव पठनीयम्।
उत्तराणि:
(i) प्राचीनतमा
(ii) भाषाणाम्
(iii) सूक्तयः
(iv) संस्कृतग्रन्थेषु
(v) संस्कृतम्।

(4) इकारान्त-स्त्रीलिंग-शब्दरूपाणि यथानिर्देशं पूरयत। (इकारान्त स्त्रीलिंग शब्दरूप यथानिर्देश पूरे कीजिए। Complete the declcusion of इकारान्त words in feminine gender as directed.)

NCERT Solutions for Class 7 Sanskrit Chapter 13 अमृतं संस्कृतम् 5
उत्तराणि:
NCERT Solutions for Class 7 Sanskrit Chapter 13 अमृतं संस्कृतम् 6
NCERT Solutions for Class 7 Sanskrit Chapter 13 अमृतं संस्कृतम् 7

(1) प्रदत्तविकल्पेभ्यः उचितं पदं चित्वा वाक्यानि पूरयत- (दिए गए विकल्पों से उचित पद चुनकर वाक्य पूरे कीजिए- Complete the sentences by picking out the appropriate word from the given options.)

(क) (i) प्राचीनयोः …………… निधिः संस्कृतभाषायाम् सुरक्षितः। (चरकसुश्रुतयोः, ज्ञानविज्ञानयोः, महापुरुषोः)
उत्तराणि:
ज्ञानविज्ञानयोः

(ii) संस्कृतेन मनुष्यस्य समाजस्य च …………… भवेत्। (कौशलम्, संस्कृतिः, परिष्कारः)
उत्तराणि:
परिष्कारः

(iii) ….. चरकसुश्रुतयोः योगदानं विश्वप्रसिद्धम्। (गणितशास्त्रे, चिकित्साशास्त्रे, वास्तुशास्त्रे)
उत्तराणि:
चिकित्साशास्त्रे

(vi) भारतस्य प्रतिष्ठे द्वे …………… संस्कृतिश्च। (ज्योतिषशास्त्रम्, साहित्यम्, संस्कृतम्)
उत्तराणि:
संस्कृतम्

(v) ………………. आत्मवत् व्यवहारं कुर्यात्। (महापुरुषेषु, संस्कृतग्रन्थेषु, सर्वभूतेषु)
उत्तराणि:
सर्वभूतेषु।

(ख)
(i) ……………… अमृतमश्नुते? (विद्याः, विद्यायाः, विद्यया)
उत्तराणि:
विद्यया

(ii) किं संस्कृतभाषायां केवलं ……………… साहित्यं वर्तते? (धार्मिक, धार्मिकम्, धार्मिक:)
उत्तराणि:
धार्मिकम्

(iii) ……………… रचितं अर्थशास्त्रं जगति प्रसिद्धम्। (कौटिल्यस्य, कौटिल्येन, कौटिल्यम्)
उत्तराणि:
कौटिल्येन

(vi) संस्कृते सूक्तयः……………… प्रेरयन्ति। (अभ्युदयः, अभ्युदये, अभ्युदयाय)
उत्तराणि:
अभ्युदयाय

(v) संस्कृतवाङ्मये ……………… विद्यन्ते। (अनेक शास्त्राणि, अनेकाः शास्त्राः, अनेकानि शास्त्राणि)
उत्तराणि:
अनेकानि शास्त्राणि।

Heat Class 7 Extra Questions and Answers Science Chapter 4

Heat Class 7 Extra Questions and Answers Science Chapter 4

Here we are providing Online Education for Heat Class 7 Extra Questions and Answers Science Chapter 4 was designed by subject expert teachers. https://ncertmcq.com/extra-questions-for-class-7-science/

Online Education for Class 7 Science Chapter 4 Extra Questions and Answers Heat

Class 7 Science Chapter 4 Heat Extra Questions Question 1.
What is a clinical thermometer?
Answer:
The thermometer that is used to measure human body temperature is called a clinical thermometer.

Class 7 Science Chapter 4 Extra Questions Question 2.
How is degree Celsius denoted?
Answer:
°C.

Heat Class 7 Extra Questions And Answers Question 3.
What is the range of a clinical thermometer?
Answer:
35°C to 42°C.

Heat Chapter Class 7 Pdf Questions And Answers Question 4.
What is the normal temperature of human body?
Answer:
The normal temperature of human body is 37°C.

Heat Class 7 Extra Questions and Answers Science Chapter 4

Class 7 Heat Extra Questions Question 5.
Which gets hotter soon, land or water?
Answer:
Land.

Heat And Temperature Class 7 Questions And Answers Question 6.
Why is range of a clinical thermometer is chosen to be 35°C to 42°C?
Answer:
The clinical thermometer is designed to measure the temperature of human body only. The temperature of human body normally does not go below 35°C or above 42 GC. That is why the clinical thermometer has the range 35°C to 42°C.

Heat Class 7 Questions And Answers Question 7.
What caution do you suggest regarding a clinical thermometer?
Answer:
A clinical thermometer should not be used for measuring the temperature of any object other than the human body. Also, avoid keeping the thermometer in the sun or near a flame. It may break.

Class 7 Science Chapter 4 Extra Questions And Answers Question 8.
Why should you wear white clothes in summer and black clothes in winter?
Answer:
Dark surfaces absorb more heat and, therefore, we feel comfortable with dark-coloured clothes in the winter. Light coloured clothes reflect most of the heat that falls on them and, therefore, we feel more comfortable wearing them in the summer.

Heat Extra Questions Class 7 Question 9.
Describe the construction of a clinical thermometer.
Answer:
A clinical thermometer consists of a long, narrow, uniform glass tube. It has a bulb at one end. This bulb contains mercury. Outside the bulb, a small shining thread of mercury can be seen. There is also a Celsius scale on the thermometer.

Ncert Class 7 Science Chapter 4 Extra Questions Question 10.
How do land and sea breezes blow?
Answer:
During the day, the land gets heated faster than the water. The air over the land becomes hotter and rises up. The cooler air from the sea rushes in towards the land to take its place. The air forms the sea breeze. The warm air from the land moves towards the sea to complete the cycle.

At night it is exactly the reverse. The water cools down more slowly than the land. So, the cool air from the land moves towards the sea. This forms the land breeze.

Heat Class 7 Extra Questions and Answers Science Chapter 4

Heat Chapter Class 7 Questions And Answers Question 11.
Show the formation of land and sea breezes with the help of diagrams.
Answer:
Heat Chapter Class 7 Questions And Answers

Class 7 Science Chapter 4 Extra Question Answer Question 12.
Boojho says, “My left hand tells me that the water in mug C is hot and the right-hand tells mc that the same water is cold. What should I conclude ?“
Answer:
Both conclusions are true relative to each hand. But a single conclusion cannot be drawn from the given information. This is all due to relative temperature.

Class 7 Science Ch 4 Extra Questions Question 13.
Boojho got a naughty idea. He wanted to measure the temperature of hot milk using a clinical thermometer. Paheli stopped him from doing so. Why?
Answer:
The clinical thermometer is designed to measure the human body temperature which ranges from 35CC to 42°C. Hot milk has a temperature range of 80°C to 100°C, which is quite high. This may break the thermometer because of abrupt mercury rise.

Ncert Solutions For Class 7 Science Chapter 4 Heat Extra Questions Question 14.
Boojho wonders why the level of mercury should change at all when the bulb of the thermometer is brought in contact with another object?
Answer:
The temperature of other objects may not be the same as that of the bulb of the thermometer. When bulb is brought in contact with that object, the temperature of the bulls changes. So the level of mercury also changes.

Questions On Heat For Class 7 Question 15.
Can you lift a hot pan by holding it from the handle without getting hurt?
Answer:
Yes. If the handle is insulated with the help of a cloth or insulated material like plastic or wood, the pan can be lifted without getting hurt.

Class 7 Science Heat Extra Questions Question 16.
Do these activities suggest to you the reason why it more comfortable to wear white or light-coloured clothes in the summer and dark-coloured clothes in the winter?
Answer:
Dark surfaces absorb more heat and, therefore, we feel comfortable with dark coloured clothes in the winter. Light coloured clothes reflect most of the heat that falls on them and, therefore, we feel more comfortable wearing them in the summer.

Question 17.
Suppose you are given the choice in winter of using one thick blanket or two thin blankets joined together. What would
you choose and why?
Answer:
I would choose two thin bi anklets joined together. This is because there would be a layer of air in between the blankets. The trapped air, which is a bad conductor of heat, keeps it warmer.

Heat Class 7 Extra Questions and Answers Science Chapter 4

Question 18.
State similarities and differences between the laboratory thermometer and the clinical thermometer.
Answer:
Similarities:
(i) Both use mercury
(ii) Both measure temperature.
Differences :
(i) The temperature on laboratory thermometer falls by itself, but it does not happen in clinical thermometer.
(ii) The range of laboratory thermometers is much higher than clinical thermometers.

Multiple Choice Questions

1. Two large mugs are taken. These are labelled as A and B. Some hot water is put in mug A while some cold water is put in mug B. A boy dips his left hand in mug A and right hand in mug B. Now he interchanges i.e. he dips his right hand in mug A and left hand in mug B. Then :
(i) the water in the mug A will be felt hotter than before.
(ii) the water in the mug A will be felt colder than before.
(iii) the water in the mug B will be felt hotter than before.
(iv) in both the cases the temperature of water in mug ’A will be felt the same.
Answer:
(i) the water in the mug A will be felt hotter than before.

2. In the above experiment, the boy felt the water hot when he dips his hand in mug A. It is because :
(i) the temperature of the water was less than the temperature of his body.
(ii) the temperature of the water was more than the temperature of his body.
(iii) the temperature of the water was less than the temperature of the surroundings.
(iv) the temperature of the water was equal to the temperature of the surroundings.
Answer:
(ii) the temperature of the water was more than the temperature of his body.

3. Before using the thermometer, it is ensured that the level of mercury is below :
(i) 33°C
(ii) 34°C
(iii) 35°C
(iv) 36°C.
Answer:
(iii) 35°C.

Heat Class 7 Extra Questions and Answers Science Chapter 4

4. The normal temperature of human body is :
(i) 35°C
(ii) 37°C
(iii) 36°C
(iv)38°C.
Answer:
(ii) 37°C.

5. To measure the temperature of his body, a boy performed the following steps :
(A) Washed the thermometer.
(B) Checked out whether the mercury level was below 35°C.
(C) Hold it firmly and gave few jerks so that the level of mercury fall down below 35°C.
(D) Placed the bulb of the thermometer below the tongue for five minutes.
(E) Took out the thermometer, and checked out the body temperature.
Answer:
(D) Placed the bulb of the thermometer below the tongue for five minutes.

Which of the above-mentioned step is wrong?
(i) A
(ii) B
(iii) C
(iv) D
Answer:
(iv) D.

6. The temperature of human body does not go above:
(i) 40°C
(ii) 38°C
(iii) 42°C
(iv) 44°C.
Answer:
(iii) 42°C.

7. The temperature range of a typical clinical thermometer is usually between :
(i) 32°C to 35°C
(ii) 34°C to 38°C
(iii) 35°C to 40°C
(iv) 35°C to 42°C.
Answer:
(iv) 35°C to 42°C.

Heat Class 7 Extra Questions and Answers Science Chapter 4

8. The range of a laboratory thermometer is generally in between :
(i) – 20°C to 120°C
(ii) – 20°C to 110°C
(iii) – 10°C to 120°C
(iv) – 10°C to 110°C
Answer:
(iv) – 10°C to 110°C.

Q. 9. Which of the following pictures best describes the method of measuring temperature of water with a laboratory thermometer?
Answer:
Heat Class 7 Extra Questions and Answers Science Chapter 4 2

10. What is the use of kink in a thermometer?
(i) It helps in measuring the temperature.
(ii) It prevents mercury level from falling on its own.
(iii) It stores mercury.
(iv)it controls the temperature.
Answer:
(ii) It prevents mercury level from falling on its own.

12. In solid, generally heat is transferred by the process of :
(i) conduction
(ii) convection
(iii) radiation
(iv) transmission.
Answer:
(i) conduction.

13. An iron rod is taken. Four pieces of wax say A, B, C and D are fixed on the rod from one end – all at equal distance to
one another. The rod is clamped to a stand. Now the other end of the rod is heated. Which piece of wax will fall first?
Heat Class 7 Extra Questions and Answers Science Chapter 4 3
(i) A
(ii) B
(iii) C
(iv) D.
Answer:
(iv) D.

14. Which of the following substances is a conductor of heat?
(i) Plastic
(ii) Aluminium
(iii) Wood
(iv) Plywood.
Answer:
(ii) Aluminium.

15. Which of the following substances is an insulator of heat?
(i) Iron
(ii) Copper
(iii) Rubber
(iv) Bronze.
Answer:
(iii) Rubber.

Heat Class 7 Extra Questions and Answers Science Chapter 4

16. Heat travels of:
(i) conduction
(ii) convection
(iii) radiation
(iv) insulation.
Answer:
(ii) convection.

17. When the air gets heated by convection :
(i) it rises upwards.
(ii) it moves sideways.
(iii) it rises upwards as well as mdves sideways.
(iv) it goes downwards.
Answer:
(i) it rises upwards.

18. In coastal area, land breeze blows during
(i) day
(ii) night
(iii) afternoon
(iv) both day and night .
Answer:
(ii) night.

19. Heat reaches to the earth from the sun by the process of :
(i) conduction
(ii) convection
(iii) radiation
(iv) insulation.
Answer:
(iii) radiation.

20. Which of the following surfaces is a good absorber of heat?
(i) Black
(ii) White
(iii) Shiny
(iv) Bright
Answer:
(i) Black.

21. Which of the following statements is true?
(i) All hot bodies radiate heat.
(ii) All hot bodies do not radiate heat.
(iii) Some hot bodies radiate heat while others do not.
(iv) Only black bodies radiate heat.
Answer:
(i) All hot bodies radiate heat.

Keywords:

→ Celsius scale: The temperature scale which defines the temperature of boiling water is 100 degrees and that of freezing water as 0 (zero) degrees.

→ Conduction: The process by which heat is transferred from the hotter end to the colder end of an object is known as conduction.

→ Conductor: The materials with allow neat to pass through them easily is called conductor of heat.

→ Convection: The process of transfer of he’ the molecules of a fluid from hot rear. to, cok vision called convection.

→ Insulators: A poor conductor is known as insulator.

→ Land breeze: The air from the land that moves towards the sea is called the land breeze,

→ Radiation: The process by which heat is transferred from one place to another without any medium is called radiation.

→ Sea breeze: The air that comes from the sea is called the sea breeze.

→ Temperature: A measure of the hotness of an object is its temperature.

→ Thermometer: The device by which temperature is measured is called thermometer.

Extra Questions for Class 7 Science

Online Education NCERT Solutions for Class 7 Sanskrit Chapter 12 विद्याधनम्

We have given detailed Online Education NCERT Solutions for Class 7 Sanskrit Ruchira Chapter 12 विद्याधनम् Questions and Answers come in handy for quickly completing your homework.

Online Education NCERT Solutions for Class 7 Sanskrit Ruchira Chapter 12 विद्याधनम्

Class 7 Sanskrit Chapter 12 विद्याधनम् Textbook Questions and Answers

प्रश्न: 1.
उपयुक्तकथनानां समक्षम् ‘आम्’ अनुपयुक्तकथनानां समक्षं ‘न’ इति लिखत- (उचित कथनों के सामने ‘आम्’ और अनुचित कथनों के सामने ‘न’ लिखिए- Write ‘आम्’ before a right sentence and ‘न’ before a wrong sentence.)

(क) विद्या राजसु पूज्यते।
उत्तराणि:
आम्

(ख) वाग्भूषणं भूषणं न।
उत्तराणि:

(ग) विद्याधनं सर्वधनेषु प्रधानम्।
उत्तराणि:
आम्

(घ) विदेशगमने विद्या बन्धुजन: न भवति।
उत्तराणि:

(ङ) सर्वं विहाय विद्याधिकारं कुरु।
उत्तराणि:
आम्।

प्रश्न: 2.
अधोलिखितानां पदानां लिङ्ग, विभक्तिं वचनञ्च लिखत- (निम्नलिखित शब्दों का लिंग, विभक्ति और वचन लिखिए- Write the gender, inflexion and number of words given below.)

NCERT Solutions for Class 7 Sanskrit Chapter 12 विद्याधनम् 1
NCERT Solutions for Class 7 Sanskrit Chapter 12 विद्याधनम् 2
उत्तराणि:
NCERT Solutions for Class 7 Sanskrit Chapter 12 विद्याधनम् 3

प्रश्न: 3.
श्लोकांशान् योजयत। (श्लोकों के अंशों को मिलाइए। Match the parts of the shlokas.)

‘क’ – ‘ख’
विद्या राजसु पूज्यते न हि धनम् – हारा न चन्द्रोज्ज्वला:।
केयूरा: न विभूषयन्ति पुरुषम् – न भ्रातृभाज्यं न च भारकारि।
न चौरहार्यं न च राजहार्यम् – या संस्कृता धार्यते।
सत्कारायतनं कुलस्य महिमा – विद्या-विहीनः पशुः।
वाण्येका समलङ्करोति पुरुषम् – रत्नैर्विना भूषणम्।
उत्तराणि:
‘क’ – ‘ख’
विद्या राजसु पूज्यते न हि धनम् – विद्या-विहीनः पशुः।
केयूराः न विभूषयन्ति पुरुषम् – हारा न चन्द्रोज्ज्वलाः।
न चौरहार्यं न च राजहार्यम् – न भ्रातृभाज्यं न च भारकारि।
सत्कारयतनं कुलस्य महिमा – रत्नैर्विना भूषणम्।
वाण्येका समलङ्करोति पुरुषम् – या संस्कृता धार्यते।

प्रश्न: 4.
एकपदेन प्रश्नानाम् उत्तराणि लिखत- (प्रश्नों के उत्तर एक शब्द में लिखिए- Answer the questions in one word.)

(क) कः पशुः?
उत्तराणि:
विद्या-विहीनः

(ख) का भोगकरी?
उत्तराणि:
विद्या

(ग) के पुरुषं न विभूषयन्ति?
उत्तराणि:
केयूराः

(घ) का एका पुरुषं समलङ्करोति?
उत्तराणि:
वाणी

(ङ) कानि क्षीयन्ते?
उत्तराणि:
भूषणानि।

प्रश्न: 5.
रेखाङ्कितपदानि अधिकृत्य प्रश्ननिर्माणं कुरुत- (रेखांकित शब्दों के आधार पर प्रश्न निर्माण कीजिए Frame questions based on the underlined words.)

(क) विद्याविहीनः नरः पशुः अस्ति।
उत्तराणि:
विद्याविहीनः कः पशुः भवति?

(ख) विद्या राजसु पूज्यते।
उत्तराणि:
का राजसु पूज्यते?

(ग) चन्द्रोज्ज्वला: हाराः पुरुषं न अलङ्कर्वन्ति ।
उत्तराणि:
चन्द्रोज्ज्वला: के पुरुषं न अलङ्कर्वन्ति?

(घ) पिता हिते नियुक्ते।
उत्तराणि:
कः हिते नियुक्ते?

(ङ) विद्याधनं सर्वप्रधानं धनमस्ति।
उत्तराणि:
विद्याधनं कीदृशम् धनमस्ति?

(च) विद्या दिक्षु कीर्तिं तनोति।
उत्तराणि:
विद्या कासु/कुत्र कीर्तिं तनोति?

प्रश्न: 6.
पूर्णवाक्येन प्रश्नानाम् उत्तराणि लिखत- (प्रश्नों के उत्तर एक वाक्य में लिखिए- Write the answers of questions in one sentence.)

(क) गुरूणां गुरुः का अस्ति?
उत्तराणि:
विद्या गुरूणां गुरुः अस्ति।

(ख) कीदृशी वाणी पुरुषं समलङ्करोति?
उत्तराणि:
संस्कृता वाणी पुरुषं समलङ्करोति ।

(ग) व्यये कृते किं वर्धते?
उत्तराणि:
व्यये कृते विद्याधनम् वर्धते।।

(घ) भाग्यक्षये आश्रयः कः?
उत्तराणि:
विद्या नाम भाग्यक्षये आश्रयः।

प्रश्नः 7.
मञ्जूषातः पुंल्लिङ्ग-स्त्रीलिङ्ग-नपुंसकलिङ्गपदानि चित्वा लिखत- (मञ्जूषा से पुंल्लिग, स्त्रीलिंग और नपुंसक लिंग के शब्द चुनकर लिखिए- Choose and write the respective words of masculine, feminine and neutral genders from the box.)

| विद्या, धनम्, संस्कृता, सततम्, कुसुमम्, मूर्धजाः, पशुः, गुरुः, रतिः।।

NCERT Solutions for Class 7 Sanskrit Chapter 12 विद्याधनम् 4
उत्तराणि:
NCERT Solutions for Class 7 Sanskrit Chapter 12 विद्याधनम् 5

Class 7 Sanskrit Chapter 12 विद्याधनम् Additional Important Questions and Answers

(1) श्लोकांशान् योजयत- (श्लोकांशों को जोड़िए- Join the verses.)

(i) क्षीयन्ते खलु भूषणानि – विद्याधनं सर्वधनप्रधानम्।
(ii) व्यये कृते वर्धते एव नित्यं – सततं वाग्भूषणं भूषणम्।
(iii) विद्या नाम नरस्य कीर्तिरतुला – विद्या-विहीनः पशुः।
(iv) विद्या बन्धुजनों विदेशगमने – भाग्यक्षये चाश्रयः।
(v) विद्या राजसु पूज्यते न हि धनं – विद्या परा देवता।
उत्तराणि:
(i) क्षीयन्ते खलु भूषणानि – सततं वाग्भूषणं भूषणम्।
(ii) व्यये कृते वर्धते एव नित्यं – विद्याधनं सर्वधनप्रधानम्।
(iii) विद्या नाम नरस्य कीर्तिरतुला – भाग्यक्षये चाश्रयः।
(iv) विद्या बन्धुजनो विदेशगमने – विद्या परा देवता।
(v) विद्या राजसु पूज्यते न हि धनं – विद्याविहीनः पशुः।

(2) भिन्नवर्गस्य पदं चिनुत- (भिन्न वर्ग का पद चुनिए- Pick out the word belonging to a different category.)

(i) विद्या, देवता, एका, वाणी
उत्तराणि:
एका – (यह संख्यावाची विशेषण है, शेष संज्ञापद हैं।)

(ii) सततम्, भूषणम्, तृतीयम्, रूपम्
उत्तराणि:
सततम् – (यह अव्यय पद है, शेष शब्द रूप हैं।)

(iii) पशुः, गुरुः, धेनुः, कुरु
उत्तराणि:
कुरु – (यह क्रियापद है, शेष संज्ञा पद हैं।)

(iv) पुरुषम्, स्नानम्, नेत्रम्, धनम्
उत्तराणि:
पुरुषम् – (यह पुल्लिग पद है, शेष नपुंसकलिङ्ग हैं।)

(3) शुद्धस्य कथनस्य समक्षम् ‘आम्’ अशुद्धस्य समक्षं च ‘न’ लिखत- (शुद्ध कथन के सामने ‘आम्’ और अशुद्ध के सामने ‘न’ लिखिए- Put down ‘आम्’ opposite the correct statement and ‘न’ opposite the incorrect one.)

(i) स्नानं विलेपनं अलङ्कताः च मूर्धजाः पुरुषं न विभूषयन्ति। ……………………
(ii) विद्याधनं व्यये कृते न वर्धते। ……………………
(iii) भाग्यक्षये विद्या अपि आश्रयः न भवति। ……………………
(iv) राजा अपि धनं पूजयति न तु विद्याम्।……………………
(v) विद्यया एव कुलस्य महिमा भवति। ……………………
उत्तराणि:
(i) आम्
(ii) न
(iii) न
(iv) न
(v) आम्

(4) विशेषणविशेष्यपदानि योजयत- (विशेषण व विशेष्य जोड़िए- Join the adjectives with the nouns they qualify.)

(i) परा – कीर्तिः
(ii) अतुला – नेत्रम्
(iii) संस्कृता – मूर्धजाः
(iv) तृतीयम् – देवता
(v) अलङ्कताः – विद्याधनम्
(vi) सर्वधनप्रधानम् – वाणी
उत्तरत-
(i) परा – देवता
(ii) अतुला – कीर्तिः
(iii) संस्कृता – वाणी
(iv) तृतीयम् – नेत्रम्
(v) अलङ्कृताः – मूर्धजाः
(vi) सर्वधनप्रधानम् – विद्याधनम्

(5) पाठांशं पठत प्रश्नान् च उत्तरत- (पाठांश को पढ़कर प्रश्नों के उत्तर दीजिए- Read the extract and answer the questions.)

विद्या नाम नरस्य रूपमधिकं प्रच्छन्नगुप्तं धनम्
विद्या भोगकरी यशः सुखकरी विद्या गुरूणां गुरुः ।
विद्या बन्धुजनो विदेशगमने विद्या परा देवता
विद्या राजसु पूज्यते न हि धनं विद्या-विहीनः पशुः ॥

I. एकपदेन उत्तरत- (एक पद में उत्तर दीजिए- Answer in one word.)

(i) विद्या नरस्य अधिकं किम्?
उत्तराणि:
रूपम्

(ii) विद्या कीदृशं धनम्?
उत्तराणि:
प्रच्छन्नगुप्तम्

(iii) विद्या केषाम् गुरुः?
उत्तराणि:
गुरूणाम्

(iv) का राजसु पूज्यते?
उत्तराणि:
विद्या

II. पूर्णवाक्येन उत्तरत- (पूर्ण वाक्य में उत्तर दीजिए- Answer in a complete sentence.)

(i) विद्या किं किं करोति?
उत्तराणि:
विद्या भोगकरी यशः सुखकरी च अस्ति। अथवा विद्या उपभोग-साधनानि यशः (कीर्तिं च) करोति।

(i) विद्याविहीनः केन समः/तुल्यः अस्ति?
उत्तराणि:
विद्याविहीनः पशुना समः/तुल्यः अस्ति।

(ii) विद्या कुत्र बन्धुः?
उत्तराणि:
विद्या विदेशगमने बन्धुजनः या तत्र विविधप्रकारेण साहाय्यं करोति।

III. भाषिककार्यम्

यथानिर्देशम् उत्तरत- (निर्देशानुसार उत्तर दीजिए- Answer as directed.)

1. ‘परा देवता’ – अत्र किं विशेषणपदम्? ………………
उत्तराणि:
परा

2. ‘विदेशगमने’ – अत्र किं विभक्तिवचनम् (प्रथमा-द्विवचनम्, द्वितीया-द्विवचनम्, सप्तमी-एकवचनम्) ………………
उत्तराणि:
सप्तमी-एकवचनम्

3. यथानिर्देशम् रिक्तस्थानानि पूरयत
(i) गुरूणाम् (गुरु) ……………… (पशु) ……………… (बन्धु)
उत्तराणि:
पशूनाम्, बन्धूनाम्

(ii) ……………… (एकवचन) ……………… (द्विवचन) गुरूणाम्
उत्तराणि:
गुरोः, गुर्वो:

4. ‘एका वाणी पुरुषं समलङ्करोति’ अत्र ‘समलंकरोति’ क्रियापदस्य कर्ता कः? ………………(एका, वाणी, पुरुषम्)
उत्तराणि:
वाणी

(1) उचितं विकल्पं चित्वा रिक्तस्थानानि पूरयत- (उचित विकल्प चुनकर रिक्त स्थान भरिए Fill in the blanks with the correct option.)

(i) व्यये कृते नित्यम्। (वर्धते, क्षीयते, धार्यते)
उत्तराणि:
वर्धते

(ii) ” न विभूषयन्ति पुरुषम्। (हाराः, अलङ्कताः, केयूराः)
उत्तराणि:
केयूराः

(iii) सततम् भूषणम्। (विद्याधनम्, वाग्भूषणम्, विद्याधिकारम्)
उत्तराणि:
वाग्भूषणम्

(vi) राजसु पूज्यते न हि धनम्। (देवता, परा, विद्या)
उत्तराणि:
विद्या

(v) विद्या नाम नरस्य अतुला। (रतिः, वाणी, कीर्तिः)
उत्तराणि:
कीर्तिः

(2) उचितपदेन प्रश्ननिर्माणं कुरुत- (उचित पद द्वारा प्रश्ननिर्माण कीजिए- Frame questions using the correct option.)

(i) वाणी एका समलंकरोति पुरुषम्। (किम्, कम्, काम्)
उत्तराणि:
वाणी एका कम् समलंकरोति?

(ii) हाराः पुरुषं न विभूषयन्ति। (काः, के, कः)
उत्तराणि:
के पुरुषं न विभूषयन्ति।

(iii) सततम् वाग्भूषणम् भूषणम्। (कुत्र, कुतः, कदा)
उत्तराणि:
कदा वाग्भूषणम् भूषणम्।

(vi) विद्या रत्नैः विना भूषणम्। (केन, कैः, कान्)
उत्तराणि:
विद्या कैः विना भूषणम्।

(v) विद्या भाग्यक्षये आश्रयः। (किम्, कः, का)
उत्तराणि:
का भाग्यक्षये आश्रयः।

Class 7 Civics Chapter 3 Extra Questions and Answers How the State Government Works

Online Education for Class 7 Civics Chapter 3 Extra Questions and Answers How the State Government Works

Check the below Online Education NCERT MCQ Questions for Class 7 Civics Chapter 3 Extra Questions and Answers How the State Government Works Pdf free download. https://ncertmcq.com/extra-questions-for-class-7-social-science/

Online Education for How the State Government Works Class 7 Extra Questions Civics Chapter 3

Class 7 Civics Chapter 3 Extra Questions And Answers Question 1.
What do you mean by MLA?
Answer:
The members of legislative assembly is called MLA.

Chapter 3 Civics Class 7 Extra Questions Question 2.
Who becomes the Chief Minister of a State?
Answer:
The leader of the majority party becomes the Chief Minister of a State.

Class 7 Civics Chapter 3 Extra Questions Question 3.
What is ORS packet?
Answer:
The ORS packet contains life-saving materials which can prepare oral rehydration solution’.

Ncert Class 7 Civics Chapter 3 Extra Questions Question 4.
What does the word ‘government’ refer to?
Answer:
The word ‘government’ refers to the government departments and the various ministers who head them.

Class 7 Civics Chapter 3 Extra Questions and Answers How the State Government Works

Class 7 Civics Chapter 3 MCQ Question 5.
What is a Legislative Assembly?
Answer:
A Legislative Assembly is a place where all the MLAs, whether from the ruling party or from the opposition meet to discuss issues/problems of urgent needs, a bill introduced for making law, etc.

Class 7 Civics Ch 3 Extra Questions Question 6.
What is legislature and what does it do?
Answer:

  • All the MLAs in the legislative assembly together constitute the legislature.
  • They take part in debate, approve the policy and programmes of the government and supervise the actions taken of the government outside the assembly.

MCQ Questions For Class 7 Civics Chapter 3 Question 7.
Write about the democratic process adopted for the formation of Government in a State.
Answer:

  • It is the democracy through which the people of 18 years and above elect their representatives as the members of legislative assembly (MLAs).
  • The MLAs of the majority party elect their leader who is appointed the Chief Minister of the State by the governor.
  • The Chief Minister selects some MLAs to head different departments/ministries and they are appointed as ministers by the Governor of the State. Thus, a Government is formed in a State by democratic process.

Class 7 Civics Chapter 3 Extra Questions and Answers How the State Government Works

Multiple Choice Questions (MCQs)

1. Which one of the following is different from the other three, with reference to the levels of the Government?
(a) Local Government
(b) State Government
(c) International Government.
(d) National Government.
Answer:
(c) International Government.

Class 7 Civics Chapter 3 MCQ With Answers

2. The members of the Legislative Assembly (MLAs) are elected by;
(a) the people
(b) the landlords
(c) the businessmen
(d) the leaders.
Answer:
(a) the people.

Extra Questions For Class 7 Civics Chapter 3

3. How many states of India has a Legislative Assembly?
(a) Twelve
(b) Two
(c) All the states
(d) Five.
Answer:
(c) All the states.

Class 7 Civics Chapter 3 Extra Questions and Answers How the State Government Works

Ncert Class 7 Civics Chapter 3 MCQ

4. Which one of the following is called the ruling party?
(a) The political party that has majority
(b) The opposition party
(c) The party of elected members
(d) Party of various MLAs.
Answer:
(a) The political party that has majority.

Civics Class 7 Chapter 3 Extra Questions

5. Who elect the Chief Minister?
(a) People of a state
(b) Students
(c) MLAs of the ruling party
(d) MLAs of opposition.
Answer:
(c) MLAs of the ruling party.

Ch 3 Civics Class 7 Extra Questions

6. Which one of the following appoints the Chief Minister?
(a) The President
(b) The Governor
(c) The Prime Minister
(d) The Ministers.
Answer:
(b) The Governor.

Civics Chapter 3 Class 7 Extra Questions

7. Which one of the following is different from the other three, with reference to the responsibilities of MLAs and the Chief Minister?
(a) They run government of several states.
(b) They run various government departments of the state.
(c) They discuss on several issues.
(d) They take decisions.
Answer:
(a) They run government of several states.

Class 7 Civics Chapter 3 Extra Questions and Answers How the State Government Works

Class 7 Political Science Chapter 3 Extra Questions

8. Which one of the following term is used for all the MLAs who gather together in the Legislative Assembly?
(a) The Chief Minister
(b) The Legislature
(c) The Executive
(d) Government.
Answer:
(b) The Legislature.

Ncert Solutions For Class 7 Civics Chapter 3 Extra Questions

9. The act of making laws on certain issues is done in the;
(a) Parliament
(b) Prime Minister’s office
(c) Legislative Assembly
(d) Chief Minister’s office.
Answer:
(c) Legislative Assembly.

State Government Class 7 Questions And Answers

10. Laws for the entire country are made in the;
(a) Parliament
(b) Legislative Assembly
(c) Prime Minister’s office
(d) Chief Minister’s office
Answer:
(a) Parliament.

Important Terms:

Constituency: A particular area from which all the voters living there choose their representatives. This could be, for example, a panchayat ward or an area that chooses an MLA.

Majority: This is a situation when more than half the number in a group supports a decision or an idea. This is also called a simple majority.

Opposition: This refers to elected representatives who are not members of the ruling party and who play the role of questioning government decisions and actions as well as raise new issues for consideration in the Assembly.

Press Conference: A gathering of journalists from the media who are invited to hear about and ask questions on a particular issue and are then expected to report on this to the larger public.

Extra Questions for Class 7 Social Science

Class 7 Civics Chapter 8 Extra Questions and Answers A Shirt in the Market

Online Education for Class 7 Civics Chapter 8 Extra Questions and Answers A Shirt in the Market

Here we are providing Online Education for Class 7 Civics Chapter 8 Extra Questions and Answers A Shirt in the Market was designed by subject expert teachers. https://ncertmcq.com/extra-questions-for-class-7-social-science/

Online Education for A Shirt in the Market Class 7 Extra Questions Civics Chapter 8

A Shirt In The Market Class 7 Extra Questions And Answers Question 1.
Write any one advantage of weekly market?
Answer:
Most of the things of our daily and common use are available at one place in weekly market at a cheaper rate.

A Shirt In The Market Extra Questions Question 2.
Where are shopping complexes found?
Answer:
Shopping complexes are found in the urban areas, cities etc.

Class 7 Civics Chapter 8 Extra Questions Question 3.
Who are in between the producer and the final consumers?
Answer:
Wholesalers, distributors and retailers are in between the producer and the final consumer.

Class 7 Civics Chapter 8 Extra Questions And Answers Question 4.
What do you know about weekly market?
Answer:

  • A weekly market is held on a specific day of the week.
  • It does not have permanent shops.
  • Traders set up their shops for the day and then close them up in the evening.

Class 7 Civics Ch 8 Extra Questions Question 5.
What are the extra expenditure incurred in permanent shop that are not incurred in the weekly market?
Answer:
There are various expenditures incurred in permanent shops which are not in weekly market. For example,

  • They have to pay rent, electricity and sometimes fees to the Government.
  • They have to pay wages to their workers.

Class 7 Civics Chapter 8 Extra Questions and Answers A Shirt in the Market

Ch 8 Civics Class 7 Extra Questions Question 6.
What do you know about malls?
Answer:
The large multi-stores air-conditioned buildings with shops on different floors are known as malls. These malls have both branded and non-branded goods and promote them by advertising.

A Shirt In The Market Class 7 Questions And Answers Question 7.
What do you know about the market and goods, which are sold and bought in but we don’t use directly? Explain about with examples.
Answer:
There are markets that we may not be aware of. In these markets, a variety of goods are bought and sold in large numbers that we don’t use directly. For example, A car factory purchases engines, gears, petrol tanks, axles, wheels, etc. from various other factories. They use them for making cars, a final product that we use directly.

Multiple Choice Questions (MCQs)

1. Which one of the following statements is false about the weekly market?
(a) It is held on a specific day of the week,
(b) They do not have permanent shops.
(c) People come here for their everyday requirements.
(d) They are also called supermarkets.
Answer:
(d) They are also called supermarkets.

2. In the neighbourhood market, most of the shops are :
(a) Temporary
(b) permanent
(c) malls
(d) roadside shops.
Answer:
(b) permanent.

Class 7 Civics Chapter 8 Extra Questions and Answers A Shirt in the Market

3. Why are the neighbourhood markets useful?
(a) They are far away.
(b) They also provide goods on credit.
(c) They do not have all products.
(d) They do not sell branded products.
Answer:
(b) They also provide goods on credit.

4. Which one of the following terms is used for the markets in the urban area that have many shops?
(a) Mall
(b) Weekly market
(c) Shopping complexes
(d) Roadside shops.
Answer:
(c) Shopping complexes.

5. Multi-storeyed air-conditioned buildings with shops on different floors are known as;
(a) Mall
(b) Multiplexes
(c) Flat
(d) Shopping complexes.
Answer:
(a) Mall.

Class 7 Civics Chapter 8 Extra Questions and Answers A Shirt in the Market

6. The people between the producer and the final consumer are known as;
(a) owners
(b) sellers
(c) traders
(d) businessmen.
Answer:
(c) traders.

7. In the present times, the things can also be ordered by;
(a) Internet and phone
(b) TV
(c) LCD
(d) Radio
Answer:
(a) Internet and phone.

8. When things are sold, which one of the following is encouraged?
(a) Selling
(b) Purchasing
(c) Production and new opportunities
(d) New markets
Answer:
(c) Production and new opportunities.

Class 7 Civics Chapter 8 Extra Questions and Answers A Shirt in the Market

Important Terms:

Weekly Market: These markets are not daily markets but are to be found at a particular place on one or maybe two days of the week. These markets most often, sell everything that a household needs ranging from vegetables to clothes to utensils.

Mall: This is an enclosed shopping space. This is usually a large building with many floors that has shops, restaurants and, at times, even a cinema theatre. These shops most often sell branded products.

Wholesale: This refers to buying and selling in large quantities. Most products, including vegetables, fruits and flowers have special wholesale markets.

Chain of Markets: A series of markets that, are connected like links in a chain because products pass from one market to another.

Extra Questions for Class 7 Social Science

Online Education for विद्याधनम् Summary Notes Class 7 Sanskrit Chapter 12

By going through these Online Education CBSE Class 7 Sanskrit Notes Chapter 12 विद्याधनम् Summary, Notes, word meanings, translation in Hindi, students can recall all the concepts quickly.

Online Education for Class 7 Sanskrit Chapter 12 विद्याधनम् Summary Notes

विद्याधनम् पाठ का परिचय

पाठ का परिचय (Introduction of the Lesson) प्रस्तुत पाठ में श्लोकों के द्वारा विद्या के महत्त्व को बताया गया है। विद्या मनुष्य का सर्वश्रेष्ठ धन है। विद्यावान् व्यक्ति का सर्वत्र सम्मान होता है, विद्या मनुष्य का सबसे बड़ा गुण है। विद्या कल्पतरु के समान मनुष्य के सभी कार्य पूर्ण करती है। विद्याहीन मनुष्य पशु के समान होता है। अतः मनुष्य को श्रेष्ठ प्राणी बनने के लिए विद्या रूपी धन को संचित करना चाहिए।

विद्याधनम् Summary

विद्या कल्पलता की तरह होती है। इस पाठ में विद्या का महत्त्व बताया गया है। यथा विद्या को चोर चुरा नहीं सकता, राजा छीन नहीं सकता और भाई बाँट नहीं सकता। विद्या सभी धनों में श्रेष्ठ है। इसे व्यय किए जाने पर यह बढ़ती है। विद्या मनुष्य का सौन्दर्य है। यह गुप्त से गुप्त धन है। यह अनेक भोगों को देने वाली है तथा सुख प्रदान करने वाली है। राजाओं में ज्ञान की पूजा होती है तथा धन की नहीं।

मनुष्य की शोभा न तो हार से बढ़ती है और न ही पुष्प अथवा अङ्गराग के द्वारा बढ़ती है। मनुष्य की शोभा ज्ञान से बढ़ती विद्या माता की तरह रक्षा करती है, पिता की तरह हित का साधन करती है। यह शोभा को बढ़ाती है। विद्या मनुष्य का सभी प्रकार से भला करती है।

विद्याधनम् Word Meanings Translation in Hindi

(क) न चौरहार्यं न च राजहार्य
न भ्रातभाज्यं न च भारकारि।
व्यये कृते वर्धत एव नित्यं
विद्याधनं सर्वधनप्रधानम्॥1॥

शब्दार्थाः (Word Meanings) :
चौरहार्यम्-चोरों के द्वारा चुराने योग्य (can be stolen by thieves), राजहार्यम्-राजा के द्वारा छीनने योग्य (can be snatched by king), भ्रातृभाज्यम्-भाइयों के द्वारा बाँटने योग्य (can be divided by brothers), भारकारि-भार (बोझ) बढ़ाने वाली [(that) which increases weight], वर्धते-बढ़ता है (increases), नित्यं-हमेशा (always), प्रधानम् प्रमुख (सर्वोत्तम) (best).

सरलार्थ :
न चोरों के द्वारा चुराने योग्य है और न राजा के द्वारा छीनने योग्य है, न भाइयों के द्वारा बाँटने योग्य है और न भार (बोझ) बढ़ाने वाला है। हमेशा खर्च करने पर बढ़ता ही है। विद्या का धन सभी धनों में प्रमुख (सर्वोत्तम) है।

English Translation :
Neither can it be stolen by thieves nor can it be snatched by the king, nor can it be divided by brothers and nor does it weight. It always grows on spending (using). The wealth of knowledge is the best of all the wealth.

(ख) विद्या नाम नरस्य रूपमधिकं प्रच्छन्नगुप्तं धनम्
विद्या भोगकरी यशः सुखकरी विद्या गुरूणां गुरुः।
विद्या बन्धुजनो विदेशगमने विद्या परा देवता
विद्या राजसु पूज्यते न हि धनं विद्या-विहीनः पशुः ॥2॥

शब्दार्थाः (Word Meanings) :
प्रच्छन्नगुप्तम्-अत्यन्त गुप्त (hidden), भोगकरी-भोग का साधन उपलब्ध कराने वाली [(it) helps provide the means of pleasure], परा-सबसे बड़ी (greatest), गुरूणां-गुरुओं का (of teachers), राजसु-राजाओं में (among kings), विद्या-विहीनः-विद्या से रहित (without knowledge).

सरलार्थ :
विद्या मनुष्य का अधिक (अच्छा) स्वरूप है, छुपा हुआ गोपनीय धन है, विद्या भोग का साधन उपलब्ध कराने वाली है, कीर्ति और सुख प्रदान कराने वाली है, विद्या गुरुओं का गुरु है। विद्या विदेश जाने पर बन्धु (मित्र) के समान होती है, विद्या सबसे बड़ा देवता है। विद्या राजाओं में पूजी जाती है, धन नहीं। विद्या से रहित (मनुष्य) पशु के समान होता है।

English Translation :
Knowledge is a person’s best identity, (it) is the hidden wealth, (it) helps provide the means of pleasure, (it) provides fame and comfort/ happiness, knowledge is the teacher of teachers. On going to foreign country knowl edge is like a friend. Knowledge is the greatest god/divinity. Knowledge is worshipped among kings, not wealth. A person without knowledge is like an animal.

(ग) केयूराः न विभूषयन्ति पुरुषं हारा न चन्द्रोज्ज्वला
न स्नानं न विलेपनं न कुसुमं नालङ्कता मूर्धजाः।
वाण्येका समलङ्करोति पुरुषं या संस्कृता धार्यते
क्षीयन्तेऽखिलभूषणानि सततं वाग्भूषणं भूषणम् ॥3॥

शब्दार्थाः (Word Meanings):
केयूरा:-बाजूबन्द (Bracelets), चन्द्रोज्ज्वला (चन्द्र+उज्ज्वला) चन्द्रमा के समान चमकदार (bright as the moon), विलेपनम्-शरीर पर लेप करने योग्य सुगन्धित-द्रव्य (चन्दन, केसर आदि) (scented material for anointing the body (hair) like sandal, saffron etc.), मूर्धजा:-बाल/वेणी/चोटी (plait), नालङ्कृता (न + अलङ्कृता)-नहीं सजाया हुआ (not decorated), वाण्येका (वाणी+एका)-एकमात्र वाणी (only speech), समलङ्करोति ( सम्+अलङ्करोति) अच्छी तरह सुशोभित करती है (adorns well), संस्कृता-परिष्कृत (संस्कारयुक्त) (Refined), धार्यते धारण की जाती है (is learnt), क्षीयन्तेऽखिलभूषणानि (क्षीयन्ते अखिलभूषणानि)-सम्पूर्ण आभूषण नष्ट हो जाते हैं (all ornaments decay), वाग्भूषणम्-वाणी का आभूषण (ornament of speech).

सरलार्थ :
मनुष्य को न बाजूबन्द सुशोभित करते हैं, न चन्द्रमा के समान चमकदार हार, न स्नान, न शरीर पर सुगन्धित लेपन (चन्दन, केसर आदि), न बालों/चोटी में सजाए हुए फूल सुशोभित करते हैं और ना हीं सजाई गई चोटी ही। मनुष्य को एकमात्र वाणी, भली प्रकार सुशोभित करती है, जो परिष्कृत (संस्कारयुक्त) रूप में धारण की जाती है (व्यवहार में लाई जाती है)। अन्य सभी आभूषण नष्ट होते हैं, (परन्तु) वाणी का आभूषण सदैव रहने वाला आभूषण है।

English Translation :
Neither bracelet nor bright as moon necklaces, nor bath, nor scented anointing on the body (sandal, saffron etc.), nor flowers decorating the hair plait adorn a person. Only speech which is learnt refined, adorns a person well. All other ornaments are destroyed, the ornament of speech is an everlasting ornament.

(घ) विद्या नाम नरस्य कीर्तिरतुला भाग्यक्षये चाश्रयः
धेनुः कामदुधा रतिश्च विरहे नेत्रं तृतीयं च सा।
सत्कारायतनं कुलस्य महिमा रत्नैर्विना भूषणम्
तस्मादन्यमुपेक्ष्य सर्वविषयं विद्याधिकारं कुरु॥4॥

शब्दार्थाः (Word Meanings) :
कीर्तिरतुला (कीर्तिः + अतुला)-अतुल्य यश (incredible fame), कामदुधा-इच्छाओं की पूर्ति करने वाली (one that fulfils all aspiration/desires), रतिश्च (रतिः + च)-और प्रेम (love). सत्कारायतनम (सत्कार + आयतनम)-सम्मान का स्थान अर्थात् सम्मान प्रदान करने वाली (dwelling place of fame/giver of fame), रत्नौविना (रलैः+विना) (मूल्यवान.) रत्नों के बिना (without jewels), विद्याधिकारम्-(विद्या + अधिकारम्) विद्या पर प्रभुत्व (mastery over learning).

सरलार्थ :
विद्या वास्तव में (नाम) मनुष्य की अतुल्य कीर्ति है, भाग्यक्षय (बदकिस्मती) होने पर एक आश्रय/सहारा है। कामनापूर्ति करने वाली गाय अर्थात् कामधेनु है। विरह में प्रेम करती है और वही मनुष्य की तीसरी आँख होती है। सम्मान का स्थान है। कुल की महिमा है, (बहुमूल्य) रत्नों के बिना भी आभूषण है। अतः अन्य सब बातों को छोड़ विद्या पर अपना प्रभुत्व कर लो। .

English Translation :
Learning is indeed man’s incredible fame (ie learning bring unparalleled fame) It is a support in times of adverse circumstances. It is a cow that fulfils all desires, (satisfying) love in times of separation; it is the third eye (that can perceive everything beyond normal vision). It is the giver of honour/fame. It is the prestige of family. It is an adornment without any jewels. Hence, ignoring everything gains mastery over learning.