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Check the below Online Education NCERT MCQ Questions for Class 8 Science Chapter 14 Chemical Effects of Electric Current with Answers Pdf free download. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. We have provided Chemical Effects of Electric Current Class 8 Science MCQs Questions with Answers to help students understand the concept very well. https://ncertmcq.com/mcq-questions-for-class-8-science-with-answers/

You can refer to NCERT Solutions for Class 8 Science Chapter 14 Chemical Effects of Electric Current to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Class 8 Science Chapter 14 MCQ With Answers

Science Class 8 Chapter 14 MCQs On Chemical Effects of Electric Current

Choose the correct option.

Chemical Effects Of Electric Current Class 8 MCQ Question 1.
Which of the following is a bad conductor of electricity?
(a) Distilled water
(b) Silver nitrate
(c) Sulphuric acid
(d) Copper sulphate

Class 8 Science Chapter 14 MCQ Question 2.
Which of the following does not conduct electricity?
(a) Sugar solution
(b) Vinegar solution
(c) Lemon juice solution
(d) Caustic soda solution

Chemical Effect Of Electric Current Class 8 MCQ Question 3.
An electric current can produce
(a) heating effect
(b) chemical effect
(c) magnetic effect
(d) all of these

Chemical Effects Of Electric Current MCQ Question 4.
Pure or distilled water is a
(a) poor conductor
(b) good conductor
(c) both (a) and (b)
(d) none of these

Class 8 Chemical Effects Of Electric Current MCQ Question 5.
Which of the following is a good conductor?
(a) Brick
(b) Steel
(c) Plastic
(d) Cotton

MCQ On Chemical Effects Of Electric Current Question 6.
Polythene is
(a) a conductor
(b) an insulator
(c) both (a) and (b)
(d) none of these

Class 8 Science Ch 14 MCQ Question 7.
Electroplating is based on
(a) heating effect of electricity
(b) chemical effect of electricity
(c) physical effect of electricity
(d) magnetic effect of electricity

MCQ Questions On Chemical Effects Of Electric Current Class 8 Question 8.
Copper is
(a) a good conductor
(b) an insulator
(c) both (a) and (b)
(d) none of these

Ch 14 Science Class 8 MCQ Question 9.
Waste from an electroplating factory must be disposed off
(a) in the nearby river
(b) in the nearby pond
(c) in the nearby cornfield
(d) according to the disposal guidelines of Waste Management Bodies

Class 8 Science Chemical Effects Of Electric Current MCQ Question 10.
An electrolyte is
(a) a metal
(b) a liquid that conducts current
(c) a non-metal
(d) none of these

Chemical Effect Of Electric Current MCQ Question 11.
Flow of electron is called
(a) electrolyte
(b) electroplating
(c) electrodes
(d) electric current

MCQ Questions For Class 8 Science Chapter 14 Question 12.
Which is not a non-electrolyte?
(a) Ethyl alcohol
(b) Sodium chloride
(c) Urea
(d) Sodium solution

MCQ Questions For Class 8 Science Chemical Effects Of Electric Current Question 13.
An electric lamp glows due to
(a) heating effect
(b) magnetic effect
(c) chemical effect
(d) physical effect

Class 8 Science Chapter 14 Extra Questions MCQ Question 14.
Electroplating prevents
(a) corrosion
(b) passing of current
(c) dissociation
(d) shining

MCQs On Chemical Effects Of Electric Current Class 8 Question 15.
Which of the following is not used for electroplating metal articles?
(a) Nickel
(b) Silver
(c) Chromium
(d) Sodium

Question 16.
Iron objects can be protected by electroplating them with
(a) chromium
(b) nickel
(c) zinc
(d) all of these

Question 17.
In LEDs, the longer lead (wire) is always connected to the _______ terminal
(a) negative
(b) neutral
(c) positive
(d) Any terminal

Question 18.
Tap water is a good conductor of electricity while distilled water is not because
(a) Tap water contain salts
(b) Distilled water do not contain salt
(c) Only (a) is correct
(d) Both (a) & (b) is correct

Question 19.
When electrodes are immersed in water and electricity passed, the bubbles formed on the positive terminal is actually _______ gas.
(a) Hydrogen
(b) Carbon dioxide
(c) Oxygen
(d) Nitrogen

Question 20.
When electrodes are immersed in water and electricity passed, the bubbles formed on the negative terminal is actually _______ gas.
(a) Hydrogen
(b) Carbon dioxide
(c) Oxygen
(d) Nitrogen

Question 21.
Why do we add little dilute sulphuric acid to copper sulphate solution during electroplating?
(a) To increase acidity
(b) To increase conductivity
(c) So that the colour becomes more prominent
(d) To burn copper sulphate

Question 22.
A coating of _________is deposited on iron to protect it from corrosion and formation of rust
(a) copper
(b) aluminium
(c) Zinc
(d) silver

Question 23.
Chromium plating is done on many objects such as car parts, bath taps, kitchen gas stove etc. Why?
(a) It does not corrode but prevents scratches
(b) It looks beautiful
(c) It costs less
(d) Articles can be sold at higher price

Question 24.
The process of depositing a layer of any desired metal on another material by means of electricity is called ___________.
(a) Electric plating
(b) Electroplating
(c) Electric depositing
(d) None of the above

Question 25.
Some liquids are good conductors of electricity and some are poor conductors. Which one is a poor conductor?
(a) Acidic solution
(b) Alkaline solution
(c) Common Salt solution
(d) Distilled water

Question 26.
Tin cans, used for storing food, are made by electroplating tin onto iron. Why?
(a) Tin gives a shiny appearance
(b) To make the vessel cheap
(c) Tin is less reactive than iron.
(d) To make the vessel lighter

Match the items given in column I suitably with those given in column II.

Fill in the blanks with suitable word/s.

1. Substances that conduct electricity are called ___________.

2. Substances that do not conduct electricity are called ___________.

3. A cation has ___________ charge.

4. Some liquids are ___________ conductors of electricity and some are ___________ conductors of electricity.

5. Distilled water is an ___________.

6. Distilled water when mixed with salts becomes a ___________ conductor of electricity.

7. Light emitting diodes (LED) glow even when a ___________ electric current flows through it.

8. The passage of an electric current through a conducting solution causes ___________.

9. Change in colour is an example of the ___________ effect of current.

10. There are ___________ wires attached to an LED.

11. In an LED, the longer lead is attached to the ___________ terminal of the battery and the shorter lead to the ___________ terminal.

12. Chromium has a ___________ appearance.

13. Distilled water is made by removing all ___________.

14. Iron tends to ___________ and ___________.

15. A coating of ___________ is deposited on iron to protect it from corrosion and formation of rust.

16. An electric lamp glows due to ___________ effect of electric current.

17. Electrodes are ___________.

18. The deflection in ___________ shows that current is passing.

19. ___________does not corrode easily.

20. An electrolyte is a ___________.

State whether the given statements are true or false.

1. Rubber is a good conductor of electricity.

2. Plastics are poor conductor of electricity.

3. All liquids conduct electricity.

4. Distilled water is free of salt.

5. Pure water conducts electricity.

6. Most liquids that conducts electricity are solutions of acids, bases and salts.

7. Electroplating is based on magnetic effect of electricity.

8. Small amount of some mineral salts are naturally present in water.

9. Chromium is carcinogenic.

10. An electric bulb glows due to chemical effect of electricity.

11. Distilled water when mixed with salt conducts electricity.

12. LED is an electric bulb which is used in a tester.

13. Deflection in compass needle is due to magnetic effect of current.

14. When electric current is passed through the copper sulphate solution, copper and sulphate ions are dissociated.

15. In an LED bulb, the shorter lead is connected to the positive terminal of the battery.

16. Electric current produces a magnetic effect.

17. Some liquids are good conductors of electricity and some are poor conductors of electricity.

18. Chromium has a shiny appearance.

19. Jewellery makers electroplate silver and gold on expensive metals.

20. Electroplating wastes are useful to human health and environment.

We hope the given NCERT MCQ Questions for Class 8 Science Chapter 14 Chemical Effects of Electric Current with Answers Pdf free download will help you. If you have any queries regarding Chemical Effects of Electric Current CBSE Class 8 Science MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

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Students can also read Online Education MCQ Questions for Class 10 Science Chapter 1 Chemical Reactions and Equations Questions with Answers hope will definitely help for your board exams. https://ncertmcq.com/mcq-questions-for-class-10-science-with-answers/

Class 10 Science Chemistry Chapter 1 MCQ With Answers

Chemistry Class 10 Chapter 1 MCQs On Chemical Reactions and Equations

Chemical Reaction And Equation Class 10 MCQ Question 1.
Which of the following is not a physical change?
(a) Boiling of water to give water vapour.
(b) Melting of ice to give water.
(c) Dissolution of salt in water.
(d) Combustion of Liquefied Petroleum Gas (LPG).
Answer:
(d) Combustion of Liquefied Petroleum Gas (LPG).

Explanation: Since the combustion of Liquefied Petroleum Gas (LPG) produces new substances, a lot of heat is produced along with carbon dioxide and water vapour. It is also irreversible in nature. So it is a chemical change.

However, boiling of water to give water vapour, melting of ice to give water and dissolution of salt in water are physical changes, as here no new substance is formed, only the physical state of the substance changes.

A physical change does not produce a new substance although the initial and final substances appear different and it is reversible.

During a chemical change, the chemical composition of the substance changes and new substances with new properties are formed. Energy is either released or absorbed during a chemical change and it is irreversible.

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Chemical Reactions And Equations Class 10 MCQ Question 2.
Which of the following is (are) an endothermic process(es)?
(I) Dilution of sulphuric acid
(II) Sublimation of dry ice
(III) Condensation of water vapours
(IV) Evaporation of water
(a) (I) and (III)
(b) Only (II)
(c) Only (III)
(d) (II) and (IV)
Answer:

Class 10 Science Chapter 1 MCQ Question 3.
Strong heating of ferrous sulphate leads to the formation of a brown solid and two gases. This reaction can be categorised as:
(a) displacement and redox.
(b) decomposition and redox.
(c) displacement and endothermic.
(d) decomposition and exothermic.
Answer:
(b) decomposition and redox reaction.

Explanation: When FeSO₄ is heated strong, it decomposes to form a brown solid ferric oxide, sulphur dioxide and sulphur trioxide.

In this reaction, FeSO₄ decomposes and forms new products so it is a decomposition reaction. Here FeSO₄ is oxidised to Fe₂O₃ by loss of electrons. So this part of the reaction is oxidation reaction FeSO₄ is also reduced to SO₂ and SO₃ by a gain of electrons.

Hence, the Heating of FeSO₄ is both decomposition and Redox reaction.

Related Theory:
A reaction is called redox when both oxidation and reduction are taking place simultaneously.
The oxidation process involves:

1. Gain of oxygen
2. Loss of hydrogen
3. Loss of electrons

Reduction process involves:

1. Loss of oxygen,
2. Gain of hydrogen
3. Gain of electrons

The substance which loses electrons i.e. gets oxidised, acts as a reducing agent and the substance which gains electrons, i.e. it gets reduced and acts as an oxidising agent.

Alkyne Reactions Cheat Sheet Download.

Class 10 Chemical Reactions And Equations MCQ Question 4.
Which among the following is (are) double displacement reaction(s)?
(I) Pb + CuCl₂ → PbCl₂ + Cu
(II) Na₂SO₄ + BaCl₂ → BaSO₄ + 2NaCl
(III) C + O₂ → CO₂
(IV) CH₄ + 2O₂ → CO₂ + 2H₂O
(a) (I) and (IV)
(b) Only (II)
(c) (I) and (II)
(d) (III) and (IV)
Answer:
(b) only (II)
Explanation: A double displacement reaction involves the displacement of two ions of two different compounds that results in the formation of new compounds. Here, only in reaction (II), ions of both reactants are exchanged and two entirely different compounds are formed. For example.
Na₂SO₄ + BaCl₂ → BaSO_4(s) (White ppt) + 2NaCl_(aq)

In a double displacement reaction, exchange of ions takes place i.e., SO₄^2- exchange place with Cl^– ion. It is also called a precipitation reaction as BaSO₄ is precipitated as insoluble salt in the solution.

Ch 1 Science Class 10 MCQ Question 5.
Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of reaction involved?
(I) Displacement reaction
(II) Precipitation reaction
(III) Combination reaction
(IV) Double displacement reaction
(a) Only (I)
(b) Only (II)
(c) Only (IV)
(d) (II) and (IV)
Answer:

Class 10 Chemistry Chapter 1 MCQ Question 6.
When copper turnings are added to silver nitrate solution, a blue coloured solution is formed after some time. It is because copper:
(I) Displaces silver from the solution
(II) forms a blue coloured complex with AgNO₃
(III) Is oxidized to Cu²⁺
(IV) ls reduced to Cu²⁺
(a) (I) and (II)
(b) (II) and (III)
(c) (I) and (III)
(d) (II) and (IV)
Answer:
(c) (I) and (III)
Explanation: Copper is placed above silver in electrochemical series and thus reaction occurs
Cu + 2Ag+ → Cu²⁺ + 2Ag

Chemical Reaction And Equation MCQ Question 7.
One of the following does not happen during a chemical reaction. This is:
(a) Breaking of old bonds and formation of new bonds
(b) Formation of new substances with entirely different properties
(c) Atoms of one element change into those of another element to form new products
(d) A rearrangement of atoms takes place to form new products
Answer:
(c) atoms of one element change into those of another element to form new products. Explanation: It is not atoms but the bonds between these atoms break and form during chemical reactions. Atoms of elements can rearrange but cannot change into other elements.

Chemical Reactions And Equations MCQ Question 8.
You are given the solution of lead nitrate. In order to obtain a yellow precipitate, you should mix with it a solution of:
(a) potassium chloride
(b) potassium nitride
(c) potassium sulphide
(d) potassium iodide
Answer:
(d) potassium iodide

Explanation: Potassium iodide on reacting with lead nitrate gives yellow precipitate of Lead iodide.
2KI + Pb(NO₃)₂ → Pbl₂ + 2KNO₃

MCQ On Chemical Reactions And Equations Question 9.
In which of the following chemical equations do the abbreviations represent the correct states of the reactants and products involved at reaction temperature?
(a) 2H_2(l) + O₂(l) → 2H₂O_(g)
(b) 2H_2(g) + O₂(l) → 2H₂O_(g)
(c) 2H_2(g) + O₂(g) → 2H₂O_(l)
(d) 2H_2(g) + O₂(g) → 2H₂O_(g)
Answer:

Chapter 1 Science Class 10 MCQ Question 10.
Dilute hydrochloric acid is added to granulated zinc taken in a test tube. The following observations are recorded. Point out the correct observation:
(a) The surface of metal becomes shiny.
(b) The reaction mixture turns milky.
(c) Odour of a pungent-smelling gas is recorded.
(d) A colourless and odourless gas is evolved. [Diksha]
Answer:
(d) A colourless and odourless gas is evolved. Explanation: The chemical reaction between dilute hydrochloric acid and granulated zinc is represented as follows:
Zn + 2HCl → ZnCl₂ + H₂↑
The product, zinc chloride, does not turn the reaction milky. Hydrogen gas evolved is colourless and odourless and released by the formation of bubbles. Hence, option (d) is correct.

MCQ Of Chemical Reaction And Equation Question 11.
On heating, a blue coloured powder of copper (II) nitrate in a boiling tube, a black substance X, oxygen gas and a brown gas Y was formed. Select the option which identifies the products correctly:


Answer:
(c) X is Copper Oxide and Y is Nitrogen Dioxide Explanation: When blue coloured powder of copper (II) nitrate is heated, it decomposes to form black coloured substance which is copper oxide, oxygen gas and brown gas nitrogen dioxide.

The chemical equation for the reaction taking place is:

Class 10 Science Ch 1 MCQ Question 12.
In the equation:
Cu + XHNO₃ → CU(NO₃)₂ + yNO₂ + 2H₂O
The values of x and y are:
(a) 3 and 5
(b) 8 and 6
(c) 4 and 2
(c) 7 and 1
Answer:
(c) Cu + 4HNO₃ → Cu(NO₃)₂ + 2NO₂ + 2H₂O
Explanation: In order to find the values of x and y, we need to balance the chemical equation by equating the number of atoms of each element on both sides in the given equation.
Cu + XHNO₃ → CU(NO₃)₂ + yNO₂ + 2H₂O

Equating the number of H atoms on both sides as per the law of conservation of mass, x = 4.
Putting this value in either the no. of atoms of N or O,
x = y + 2 means y = x – 2 = 4 – 2 = 2.
Therefore, x = 4 & y = 2 is the correct answer

Chemical equation balance the equation calculator finds the stoichiometric coefficients to balance chemical equations incl.

MCQ Questions For Class 10 Science Chapter 1 Question 13.
In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?
(a) AlCl_3(aq) + 3NH₄OH_(aq) → Al(OH)₃(s) + 3NH₄Cl_(aq)
(b) AlCl_3(aq) + 3NH₄OH_(l) → Al(OH)_3(aq) + 3NH₄Cl_(s)
(c) AlCl_3(aq) + 3NH₄OH_(aq) → Al(OH)_3(s) + 3NH₄Cl_(aq)
(d) AlCl_3(aq) + 3NH₄OH_(aq) → Al(OH)_3(aq) + 3NH₄Cl_(s)
Answer:
(a) AlCl_3(aq) + 3NH4OH_(aq) → Al(OH)3(s) + 3NH4CL_(aq)

Explanation: When ammonium hydroxide solution is added to aluminium chloride solution, a white precipitate of aluminium hydroxide is formed alongwith ammonium chloride solution.

Chemical Equations And Reactions Class 10 MCQ Question 14.
The reaction 2HNO₃ + Ca(OH)₂ → Ca(NO₃)₂ + 2H₂O is an example of:
(I) displacement reaction.
(II) double displacement reaction.
(III) neutralisation reaction.
(IV) combination reaction.
(a) (I) and (II)
(b) (II) and (III)
(c) (III) and (IV)
(d) (I) and (IV)
Answer:

Chemical Equation And Reaction Class 10 MCQ Question 15.
Consider the following chemical equation:
X_(aq) + sodium chloride_(aq) → Y(white ppt) + Sodium nitrate_(aq)

Assertion Reasoning questions Class 10 Science Chapter 1

For the following questions, two statements are given: one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below:
(a) Both (A) and (R) are true and (R) is the correct explanation of the assertion.
(b) Both (A) and (R) are true, but (R) is not the correct explanation of the assertion.
(c) (A) is true, but (R) is false.
(d) (A) is false, but (R) is true.

Question 16.
Assertion (A): Following is a balanced chemical equation for the action of steam on iron:
4Fe + 4H₂O_(g) → Fe₃O₄ + 4H₂
Reason (R): The law of conservation of mass holds good for a chemical equation.
Answer:
(b) Both (A) and (R) are true but (R) is not the correct explanation of (A).

Explanation: Iron (Fe) metal does not react with cold or hot water but it reacts with steam to form a metal oxide and hydrogen.

The law of conservation of mass holds good for a chemical reaction. The statement is true but it does not explain the equation given in the Assertion.

Question 17.
Assertion (A): Magnesium ribbon burns with a dazzling white flame.
Reason (R): Magnesium ribbon undergoes physical change on burning and melts.
Answer:

Question 18.
Assertion (A): While equalizing the number of atoms to balance a chemical equation, we alter the formula of the compounds or elements involved in the reaction.
Reason (R): Chemical equation is balanced by making the number of atoms of each element equal on both sides of the arrow.
Answer:
(d) (A) is false, but (R) is true.
Explanation: A chemical equation is balanced by making the number of atoms of each element equal on both sides of the arrow without altering the formula of the compounds or elements involved in the reaction. It is balanced by putting coefficients in front of the compounds or elements.

Question 19.
Assertion (A): The reaction of calcium oxide with water to produce slaked lime releasing a large amount of heat is a combination reaction.
Reason (R): Double displacement reactions are the reactions in which there is an exchange of ions between the reactants.
Answer:
(b) Both (A) and (R) are true but (R) is not the correct explanation of (A).

Explanation: The reaction of calcium oxide with water to produce sLaked lime releasing a large amount of heat is a combination reaction as the two reactants combine to form a single product.

Whereas, in a double displacement reaction, there will be two reactants and two products which are formed by the exchange of ions between the reactants.

Question 20.
Assertion (A): The decomposition reaction of silver chloride into silver and chlorine is an exothermic process.
Reason (R): Reactions in which energy is absorbed are known as endothermic reactions.
Answer:

Question 21.
Assertion (A): Zinc and lead displace copper from their compounds.
Reason (R): Zinc and lead are more reactive than copper.
Answer:

Competency-Based Questions (CBQs)

Question 1.

During a chemical reaction atoms of one element do not change into those of another element. Nor do atoms disappear from the mixture or appear from elsewhere. Actually, chemical reactions involve the breaking and making of bonds between atoms to produce new substances.

To demonstrate a reaction, 2 g of silver chloride is taken in a china dish and placed in sunlight.
(A) What will you observe after some time?
(B) What is this reaction known as?
(C) Write the balanced chemical equation for this reaction.
(D) Give reasons for the observations.
Answer:

Question 2.
Whitewash is a very low-cost type of paint made from slaked lime (calcium hydroxide) and chalk (whiting). Chalk is calcium carbonate. Slaked lime turns into chalk by reacting with carbon dioxide in the air over several days. This causes crystallization, which binds and strengthens the coating. Various other additives can be used.

Solid calcium oxide reacts vigorously with water to form calcium hydroxide, accompanied by liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form a solution called lime water. Which among the following is (are) true about slaking of lime and the solution formed?
(I) It is an endothermic reaction.
(II) It is an exothermic reaction.
(III) The pH of the resulting solution will be more than seven.
(IV) The pH of the resulting solution will be less than seven.
(a) (I) and (II)
(b) (II) and (III)
(c) (I) and (IV)
(d) (III) and (IV)
Answer:
(b) (II) and (III)

Explanation: Slaking of lime is an exothermic reaction because a large amount of heat is produced during the reaction. The heat can be felt by touching the beaker from the outside. The resulting compound Ca(OH)2, which is also called slaked lime, turns red litmus solution to blue and hence, proves it to be a basic solution. Thus, the pH of this solution will be more than seven.

Question 3.
Shalini was quite interested in observing the changes that take place during chemical reactions but was always afraid of entering the chemistry lab. When she spoke to her chemistry teacher regarding this, the teacher suggested that she should perform a simple experiment under her guidance to overcome her fear and at the same time she could observe the changes that take place during a chemical reaction.

She took about 2 g of ferrous sulphate crystals in a dry boiling tube and heated it over the
flame of a burner. She noticed change of colour of the ferrous sulphate crystals and could also smell the characteristic odour of burning sulphur.
(A) What change in colour did Shalini observe?
Answer:
Shalini observed that the green colour of ferrous sulphate crystals changed to white as it loses water when heated.
FeSO₄.7H₂O → FeSO₄ + 7H₂O

(B) Why did Shalini get the characteristic odour of burning sulphur?
Answer:

(C) What type of reaction takes place when ferrous sulphate is heated?
Answer:
The type of reaction taking place is the thermal decomposition reaction. The chemical equation for the reaction taking place is:

(D) Give another example of such type of reactions.
Answer:

Question 4.
The production of hydrogen from water via electrolysis is a clean process, resulting in only oxygen being produced as a by-product. If the electricity required to split the water into hydrogen and oxygen is supplied via a renewable energy source then the process is environmentally benign.The water electrolysis hydrogen (oxygen) plant is equipment that electrolyzes water to produce hydrogen and oxygen by using lye as an electrolyte.

Electrolysis of water is a decomposition reaction. The mole ratio of hydrogenand oxygen gases liberated during the electrolysis of water is:
(a) 1:1
(b) 2:1
(c) 4:1
(d) 1:2
Answer:
(b) 2:1

Explanation: The balanced chemical equation for the electrolysis of water is:

The mole ratio of hydrogen and oxygen gases Liberated during electrolysis of water is 2:1 by volume.

In a decomposition reaction, a compound is broken down into its simpler forms. During electrolysis, water is broken down into oxygen gas and hydrogen gas due to the passage of electric current through it.

Question 5.
Redox reactions are an important class of reactions. The oxidation and reduction reactions always occur simultaneously, such class of chemical reactions is named as the redox reaction or Oxidation-Reduction reaction.

The substance getting reduced in a chemical reaction is known as the oxidizing agent, while a substance that is getting oxidized is known as the reducing agent. The activity in which copper powder is taken in a china dish and heated helps in understanding redox reactions.
(A) What happens when copper powder is heated in a china dish? Explain your observation.
Answer:
When copper powder is heated in a china dish, the surface of copper powder is coated with black copper oxide as oxidation of copper takes place by addition of oxygen to copper.
2Cu + O₂ → 2CuO

(B) What will you observe if hydrogen gas is passed over the heated material obtained in (A) above?
Answer:
When hydrogen gas is passed over heated material CuO, the black coating on the surface turns brown as the reverse reaction takes place and copper is formed.
CuO + H₂ → Cu + H₂O

(C) Identify the substance oxidized and substance reduced in the reaction at (B) above.
Answer:

(D) Identify the correct statement:
In the reaction between lead sulphide and hydrogen peroxide shown by the equation below,
PbS + 2H₂O₂ → PbSO₄ + 4H₂O,
(a) Lead sulphide Is reduced and Hydrogen peroxide is oxidized.
(b) Lead sulphide is oxidized and Hydrogen peroxide is reduced.
(c) Lead sulphate is oxidized and water is reduced.
(d) Lead sulphate is reduced and water is oxidized.
Answer:

Question 6.
Rancidification is the process of complete or incomplete oxidation or hydrolysis of fats and oils when exposed to air, light, or moisture or by bacterial action, resulting in unpleasant taste and odor. Specifically, it is the hydrolysis or autoxidation of fats into short-chain aldehydes and ketones, which are objectionable in taste and odor. When these processes occur in food, undesirable odors and flavors can result.

Which of the following gases can be used for the storage of fresh sample of an oil for a long time?
(a) Carbon dioxide or oxygen
(b) Nitrogen or oxygen
(c) Carbon dioxide or helium
(d) Helium or nitrogen
Answer:
(d) Helium or nitrogen

Explanation: Inert gases like helium or nitrogen both can be used for the storage of fresh sample of oil for a Long time, as they do not react with most elements, including oxygen. Thus these gases create an inert environment for the oil and prevent its reaction (oxidation) with any element in the environment. Hence, stopping it from becoming rancid.

Question 7.
A student takes two test tubes. In the first test tube, he takes lead nitrate solution and in the second he takes a few zinc granules. He adds potassium iodide solution to lead nitrate solution in the first test tube. He adds dilute sulphuric acid in the second test tube containing zinc granules.
(A) What is observed in the first test tube on adding potassium iodide solution?

Answer:
(c) Both (II) and (III)

Explanation: When potassium iodide solution is added to lead nitrate solution in a test tube, a yellow precipitate of Lead iodide is formed. The equation of the reaction taking place is:

Pb(NO₃)₂(aq) + 2KI(aq) → PbI₂(s) + 2KNO₃(aq)

(B) Select the correct observations:
When dilute sulphuric acid is added to a few zinc granules in the second test tube,
(I) Bubbles of hydrogen gas can be seen around the zinc granules.
(II) Bubbles of carbon dioxide can be seen around zinc granules.
(III) The flask becomes hot
(IV) Colour of solution changes to blue,
(a) Only (I)
(b) Both (I) and (III)
(c) Both (II) and (III)
(d) (I), (III) and (IV)
Answer:
(b) Both (I) and (III)

Explanation: When diluting sulphuric acid is added to zinc granules in a conical flask, the equation of the reaction taking place is:
Zn(s) + H₂SO₄(aq) → ZnSO₄(aq)+ H₂(g)

(C) Select the incorrect statement(s):
(I) Both the reactions are accompanied by a change in colour.
(II) A precipitate is formed in the first test tube only.
(III) Gas is evolved in the second test tube only.
(IV) Both the reactions are examples of double displacement reactions.
(a) Both (I) and (III)
(b) Both (I) and (IV)
(c) Both (II) and (III)
(d) Both (I) and (II)
Answer:

(D) Suppose we add dil hydrochloric acid in place of sulphuric acid in the second test tube. Select the correct observation:
(a) Chlorine gas will be evolved.
(b) The test tube will become cold as heat is absorbed during this reaction.
(c) Hydrogen gas will be evolved.
(d) A precipitate of zinc chloride will be formed
Answer:

(E) The type of reaction taking place when water is added slowly to a small amount of calcium oxide in a beaker is:
(I) Combination Reaction
(II) Displacement reaction
(III) Exothermic reaction
(IV) Endothermic reaction
(a) Both (I) and (III)
(b) Both (II) and (III)
(c) Both (I) and (IV)
(d) Both (II) and (IV)
Answer:

Question 8.
You must have seen that your mother stores fried food items such as boondi raita, chips, mixture, banana chips and other such items properly. This is because their smell and taste change due to the oxidation of fried food items and food becomes unfit for human consumption.

Why are anti-oxidants added to fat and oil-containing food items?
Answer:
Anti-oxidants are added to fat and oil-containing food items to prevent their oxidation which is known as rancidity which makes food smell bad and changes its taste.

Question 9.
Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

Chemical reactions must be distinguished from physical changes. Physical changes include changes of state, such as ice melting to water and water evaporating to vapour. If a physical change occurs, the physical properties of a substance will change, but its chemical identity will remain the same. However, if water, as ice, liquid, or vapour, encounters sodium metal (Na), the atoms will be redistributed to give the new substances molecular hydrogen (H₂) and sodium hydroxide (NaOH). By this, we know that a chemical change or reaction has occurred.
(A) Which of the following are physical changes?
(I) Melting of wax
(II) Burning of wax
(III) Rusting of iron
(IV) Evaporation of water
(a) Both (I) and (III)
(b) Both (II) and (III)
(c) Both (I) and (IV)
(d) Both (II) and (IV)
Answer:
(c) Both (I) and (IV)

Explanation: Melting of wax and evaporation of water are physical change as they undergo only change in their physical states without any change in their chemical composition. Whereas, burning of wax is a chemical change as carbon dioxide and water are formed when wax is burned. Rusting of iron is also a chemical change as iron undergoes oxidation in the presence of moisture to form rust or iron oxide.

(B) A chemical reaction does not involve:
(a) Formation of new substances having entirely different properties than that of the reactants
(b) Breaking of old chemical bonds and formation of new chemical bonds
(c) Rearrangement of the atoms of reactants to form new products
(d) Changing of the atoms of one element into those of another element to form new products
Answer:

(C) Quick lime is used in whitewashing because
(a) It is cheap
(b) It forms limestone with water which has a nice color.
(c) It forms slaked lime with water which reacts with atmospheric carbon dioxide to form limestone.
(d) It is easy to use
Answer:

(D) Which of the following are endothermic processes?
(I) Burning of natural gas
(II) Dilution of an acid
(III) Evaporation of water
(IV) Sublimation of camphor (crystals)
(a) (I) and (II)
(b) (II) and (III)
(c) (IV) and (IV)
(d) (III) and (IV)
Answer:

(E) The following reaction is used for the preparation of oxygen gas in the laboratory

Which of the following statement about the reaction is correct?
(a) It is a displacement reaction and endothermic in nature.
(b) it is a decomposition reaction and exothermic in nature.
(c) It is a decomposition reaction and endothermic in nature.
(d) It is a photochemical decomposition reaction and exothermic in nature.
Answer:
((c) It is a decomposition reaction and endothermic in nature.

Explanation: It is a decomposition reaction as a single reactant splits up into two products, namely, KCl and O₂, by absorbing energy in the form of heat.

It is an endothermic reaction as heat is absorbed in this reaction.

Question 10.
Many materials over time can be prone to corrosion and wear Iron is one such metal. Having a protective later and proper preparation can certainly help materials last longer and have other properties integrated into it.

A substance X used for coating iron articles is added to a blue solution of a reddish-brown metal Y. the colour of the solution gets discharged. Identify X and Y and also the type of reaction.
Answer:
We are given that the metal Y is reddish brown in colour. This metal is copper and the blue solution of Y is copper sulphate. Also, zinc is used in protecting iron articles and this process is called galvanisation. As Zinc is more reactive than copper it displaces copper from its salt solution, copper sulphate.
Zn + CUSO₄ → ZnSCO₄ + Cu
So, X is zinc, while Y is copper.

Question 11.
Double displacement reactions may be defined as the chemical reactions in which one component each of both the reacting molecules is exchanged to form the products. During this reaction, the cations and anions of two different compounds switch places, forming two entirely different compounds.

Double displacement reactions generally take place in aqueous solutions in which the ions precipitate and there is an exchange of ions.

Double displacement reactions can be further classified as neutralization and precipitation reactions.
(A) What is the precipitate formed on mixing the solution of barium chloride and sodium sulphate?
(a) Barium sulphate
(b) Sodium chloride
(c) Barium sulphite
(d) Sodium sulphite
Answer:
(a) Barium Sulphate

Explanation: When a solution of barium chloride is mixed with a solution of sodium sulphate, a precipitate of barium sulphate is formed along with sodium chloride.
BaCl₂(aq) + Na₂SO₄(aq) → BaSO₄(s) + NaCl(aq)

(B) When Potassium iodide solution is added to lead(II) nitrate solution,
(I) lead (II) iodide precipitates out of the solution as a yellow solid
(II) Potassium nitrate precipitates out of the solution as a yellow solid
(III) Potassium displaces lead from lead nitrate solution.
(IV) Exchange of lead and potassium ions takes place
(a) Both (I) and (III)
(b) Both (II) and (III)
(c) Both (I) and (IV)
(d) Both (II) and (IV)
Answer:

(C) Identify the precipitate obtained by the reaction between lead nitrate and sodium sulphate.
(a) PbS
(b) Pb(SO₄)₂
(c) PbSO₄
(d) NaNO₂
Answer:
(c) PbSO₄
Explanation: Lead nitrate reacts with sodium sulphate solution to form a precipitate of lead sulphate and sodium nitrate.
Pb(NO₃)₂(aq)+ Na₂SO₄(aq) → PbSO₄(s) + 2NaNO₃(aq)

This is a double displacement reaction as the exchange of lead and sodium ions is taking place.

(D) Which one of the following is true about a double displacement reaction?
(I) Electrolysis of water is an example of this reaction.
(II) Two compounds exchange ions to form new compounds.
(III) Only a single product is formed.
(IV) Reaction between magnesium oxide and dilute hydrochloric acid is an example for this reaction.
(a) Both (I) and (II)
(b) Both (I) and (III)
(c) Both (II) and (III)
(d) Both (II) and (IV)
Answer:

(E) Identify the incorrect statement regarding double displacement reactions:
(a) All double displacement reactions are precipitation reactions.
(b) All neutralization reactions between acids and bases are double displacement reactions
(c) The reaction between vinegar and baking soda is an example of a double displacement reaction.
(d) Reaction between silver nitrate solution and sodium chloride solution is an example of a double displacement reaction.
Answer:

Question 12.
Thermite is a pyrotechnic composition of metal powder fuel and metal oxide. When ignited by heat, thermite undergoes an exothermic oxidation-reduction reaction. Most varieties are not explosive but can create brief bursts of high temperature in a small area. Its form of action is similar to that of other fuel-oxidizer mixtures, such as black powder. Thermites have diverse compositions. Fuels include aluminium, magnesium, titanium, zinc, silicon, and boron. Aluminium is common because of its high boiling point. Oxidizers include boron(III) oxide, silicon(IV) oxide, chromium(III) oxide, manganese(IV) oxide, iron(III) oxide, iron(II, III) oxide, copper(II) oxide, and lead(ll,IV) oxide.

In this reaction mention the substance getting oxidized and the substance getting reduced.
Fe₂O₃ + 2Al → Al₂O₃ + 2Fe
Answer:
Oil and fat containing food items are flushed with nitrogen while packing them as nitrogen is an inert gas and prevents fried food materials from getting rancid.

Question 13.
A synthesis or combination reaction is a reaction in which simple compounds combine to make a more complex one. The opposite of a combination reaction is a decomposition reaction in which a single substance splits into two or more substances. We also have a single displacement reaction (in which a more reactive element displaces a less reactive element from its compound) and a double displacement reaction (in which the exchange of ions takes place between two compounds). Having a thorough understanding of the types of reactions will be useful for predicting the products of an unknown reaction.
(A) A student performed several experiments and then noted down his observations in a tabular form as given below:

Select the option that correctly describes the conclusions made by the student regarding type of reaction taking place:
(a) Both (I) and (II)
(b) Both (I) and (III)
(c) Both (II) and (III)
(d) (I), (III) and (IV)
Answer:
(d) Both (III) and (IV)

Explanation : When barium chloride solution is added to copper sulphate soLution, a white precipitate of barium sulphate is formed alongwith copper chloride solution.

This is an example of precipitation reaction as a precipitate of barium sulphate is formed. It is also a double displacement reaction as the Ba²⁺ and Cu²⁺ ions form new compounds by exchanging their ions. The equation of the reaction talcing place is:
BaCl₂(aq) + CuSO₄(aq) → BaSO₄(s) + CuCl₂(aq)

(B) When a metal X, which is used for coating iron articles, is added to a blue solution of a reddish brown metal Y, the color of the solution gets discharged.
Select the option which correctly identifies the metals X and Y and the type of reaction taking place.

Answer:

(C) The type of reaction taking place when barium chloride solution is added to copper sulphate solution is:
(I) Combination reaction
(II) Displacement reaction
(III) Double Displacement reaction
(IV) Precipitation reaction
(a) Only (I)
(b) Only (II)
(c) Both (II) and (IV)
(d) Both (III) and (IV)
Answer:

(D) Identify the incorrect statement:
(a) Burning of natural gas is a decomposition reaction.
(b) Burning of hydrogen gas in air is a combination reaction
(c) Reaction between most metals and dilute hydrochloric acid is a displacement reaction.
(d) Reaction between an acid and a base is an example of double displacement reaction.
Answer:

(E) Which of the following statement(s) are correct?
(I) The precipitation reactions produce insoluble salts.
(II) Neutralization reactions are single displacement reactions.
(III) Decomposition reactions can be carried out only in presence of heat or light.
(IV) Displacement reactions are opposite of combination reactions.
(a) Only (I)
(b) Only (II)
(c) Both (I) and (III)
(d) Both (II) and (IV)
Answer:
(a) Only (I)

Explanation: Precipitation reactions are the reactions in which an insoluble substance or precipitate is formed. Neutralization reactions are the reactions between an acid and a base and are double displacement reactions. Decomposition reactions require energy in the form of heat, light or electricity. Decomposition reactions are the opposite of combination reactions.

Very Short Answer Type Questions

Question 1.
What happens when sodium sulphate solution is added to barium chloride solution?
Answer:
When sodium sulphate solution is added to barium chloride solution, a white precipitate of barium sulphate is formed.
The equation of the reaction taking place is:
Na₂SO₄((aq) + BaCl₂(aq) →BaSO₄(s) + 2NaCl(aq)

Question 2.
An aqueous solution of metal nitrate P reacts with sodium bromide solution to form yellow ppt of compound Q which is used in photography. Q on exposure to sunlight undergoes decomposition reaction to form metal present in P along with reddish-brown gas. Identify P & Q.
Answer:
As the compound Q is formed by the reaction between P (metal nitrate solution) and sodium bromide solution, Q is silver bromide which is used in photography.

Further, Q undergoes decomposition in the presence of sunlight to form silver and bromine gas. As silver is formed above, the metal nitrate is silver nitrate.

P – silver nitrate (AgNO₃)
Q – silver bromide (AgBr).

Question 3.
What can be seen when a strip of copper metal is placed in a solution of silver nitrate?
Answer:
When a strip of copper metals is placed in a solution of silver nitrate, copper displaces silver from silver nitrate solution as copper is a more reactive metal than silver. Copper nitrate is formed with a shiny greyish-white deposit of silver on the copper strip.
2AgNO₃ + Cu → Cu(NCO₃)₂ + 2Ag

Question 4.
Name and state the law which is kept in mind when we balance chemical equations.
Answer:
The law which is kept in mind when we balance chemical equations is the law of conservation of mass which states that “Matter can neither be created nor be destroyed”. It means that the total mass of atoms of reactants = the total mass of atoms of products, as atoms can neither be created nor be destroyed.

Question 5.
Hydrogen being a highly inflammable gas and oxygen being a supporter of combustion, yet water, a compound made up of hydrogen and oxygen is used to extinguish fire. Why?
Answer:
The compound made up of hydrogen and oxygen is water (H20) which has properties that are different from properties of H₂ and O₂ as it is formed by the chemical reaction between hydrogen and oxygen gases. While hydrogen and oxygen are gases at room temperature, water is a liquid at room temperature.

Question 6.
If copper metal is heated over a flame, it develops a coating. What is the colour and composition of the coating?
Answer:

Question 7.
Write a balanced chemical equation to represent the following reaction: carbon monoxide reacts with hydrogen gas at 340 atm to form methyl alcohol.
Answer:

Question 8.
Write a balanced chemical equation for the reaction between sodium chloride and silver nitrate indicating the physical state of the reactants and the products.
Answer:
When silver nitrate solution is added to sodium chloride solution, a white precipitate of silver chloride is formed along with sodium nitrate solution.
AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq)

Question 9.
Complete and balance the following:
Fe₂O₃ + Al →
Answer:

MCQ Questions for Class 10 Science with Answers

Class 10 Science Chemistry MCQ:

• Chemical Reactions and Equations Class 10 MCQ
• Acids, Bases and Salts Class 10 MCQ
• Metals and Non-metals Class 10 MCQ
• Carbon and Its Compounds Class 10 MCQ
• Periodic Classification of Elements Class 10 MCQ

Check the below Online Education NCERT MCQ Questions for Class 9 Science Chapter 15 Improvement in Food Resources with Answers Pdf free download. MCQ Questions for Class 9 Science with Answers were prepared based on the latest exam pattern. We have Provided Improvement in Food Resources Class 9 Science MCQs Questions with Answers to help students understand the concept very well. https://ncertmcq.com/mcq-questions-for-class-9-science-with-answers/

You can refer to NCERT Solutions for Class 9 Science Chapter 15 Improvement in Food Resources to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Class 9 Science Biology Chapter 15 MCQ With Answers

Biology Class 9 Chapter 15 MCQs On Improvement in Food Resources

Improvement In Food Resources Class 9 MCQ Question 1.
Which one is an oil yielding plant among the following?
(a) Lentil
(b) Sunflower
(c) Cauliflower
(d) Hibiscus

Improvement In Food Resources MCQ Question 2.
Which one is not a source of carbohydrate?
(a) Rice
(b) Millets
(c) Sorghum
(d) Gram

Class 9 Science Chapter 15 MCQ Question 3.
Find out the wrong statement from the following.
(a) White revolution is meant for increase in milk production
(b) Blue revolution is meant for increase in fish production
(c) Increasing food production without compromising with environmental quality is called as sustainable agriculture
(d) None of the above

MCQ Of Improvement In Food Resources Question 4.
To solve the food problem of the country, which among the following is necessary?
(a) Increased production and storage of food grains
(b) Easy access of people to the food grain
(c) People should have money to purchase the grains
(d) All of the above

Class 9 Improvement In Food Resources MCQ Question 5.
Find out the correct sentence.
(i) Hybridisation means crossing between genetically dissimilar plants
(ii) Cross between two varieties is called as inter specific hybridisation
(iii) Introducing genes of desired character into a plant gives genetically modified crop
(iv) Cross between plants of two species is called as inter varietal hybridisation
(a) (i) and (iii)
(b) (ii) and (iv)
(c) (ii) and (iii)
(d) (iii) and (iv)

MCQ On Improvement In Food Resources Class 9 Question 6.
Weeds affect the crop plants by
(a) killing of plants in field before they grow
(b) dominating the plants to grow
(c) competing for various resources of crops (plants) causing low availability of nutrients
(d) all of the above.

MCQ Questions Of Ch Improvement In Food Resources Class 9 With Answers Question 7.
Which one of the following species of honeybee is an Italian species?
(a) Apis dorsata
(b) Apis florae
(c) Apis cerana indica
(d) Apis mellifera

Improvement In Food Resources Class 9 MCQ With Answers Question 8.
Find out the correct sentence about manure.
(i) Manure contains large quantities of organic matter and small quantities of nutrients.
(ii) It increases the water holding capacity of sandy soil.
(iii) It helps in draining out of excess of water from clayey soil.
(iv) Its excessive use pollutes environment because it is made of animal excretory waste.
(a) (i) and (iii)
(b) (i) and (ii)
(c) (ii) and (iii)
(d) (iii) and (iv)

Class 9 Science Ch 15 MCQ Question 9.
Cattle husbandry is done for the following purposes:
(i) Milk production
(ii) Agricultural work
(iii) Meat production
(iv) Egg production
(a) (i), (ii) and (iii)
(b) (ii), (iii) and (iv)
(c) (iii) and (iv)
(d) (i) and (iv)

MCQ On Improvement In Food Resources Question 10.
Which of the following are Indian cattle?
(i) Bos indicus
(ii) Bos domestica
(iii) Bos bubalis
(iv) Bos vulgaris
(a) (i) and (iii)
(b) (i) and (ii)
(c) (ii) and (iii)
(d) (iii) and (iv)

Class 9 Chapter 15 Science MCQ Question 11.
Which of the following are exotic breeds?
(i) Brawn
(ii) Jersey
(iii) Brown Swiss
(iv) Jersey Swiss
(a) (i) and (iii)
(b) (ii) and (iii)
(c) (i) and (iv)
(d) (ii) and (iv)

MCQs On Improvement In Food Resources Question 12.
Poultry farming is undertaken to raise following
(i) Egg production
(ii) Feather production
(iii) Chicken meat
(iv) Milk production
(a) (i) and (iii)
(b) (i) and (ii)
(c) (ii) and (iii)
(d) (iii) and (iv)

Improvement In Food Resources Class 9 MCQ Online Test Question 13.
Poultry fowl are susceptible to the following pathogens
(a) Viruses
(b) Bacteria
(c) Fungi
(d) All of the above

Food Production Class 9 MCQ Question 14.
Which one of the following fishes is a surface feeder?
(a) Rohus
(b) Mrigals
(c) Common carps
(d) Catlas

MCQ Of Chapter 15 Science Class 9 Question 15.
Animal husbandry is the scientific management of
(i) animal breeding
(ii) culture of animals
(iii) animal livestock
(iv) rearing of animals
(a) (i), (ii) and (iii)
(b) (ii), (iii) and (iv)
(c) (i), (ii) and (iv)
(d) (i), (iii) and (iv)

Question 16.
Which one of the following nutrients is not available in fertilisers?
(a) Nitrogen
(b) Phosphorus
(c) Iron
(d) Potassium

Question 17.
Preventive and control measures adopted for the storage of grains include
(a) strict cleaning
(b) proper disjoining
(c) fumigation
(d) all of the above

Fill in the blanks

1. There are ……………. nutrients essential for growth of crops.

2. Manure and …………… are the main sources of nutrient supply to the crop plants.

3. Organic farming is a farming system with minimal or no use of …………..

4. The growing of different crops on a piece of land in pre-planned succession is called ……………

5. Poultry farming is done to raise domestic …………….

6. Cross breeding is done between ……………. and …………… breeds for variety improvement.

7. Marine fish capture is done by ……………. guided by echo-sounders and satellites.

8. Bee-keeping or ……………. is done to get honey and wax.

9. The value or …………… of honey depends upon the pasturage available.

10. The …………….. bees have high honey collection capacity and sting somewhat less.

11. Fishing can be done both by ………….. and …………… of fish in marine and freshwater ecosystems.

12. Animal feed includes ……………. which is largely fibre, and …………….. which are low in fibre and contain relatively high levels of proteins and other nutrients.

13. The ……………. stop the rainwater from flowing away and also reduce soil erosion.

14. In …………… soils, the large quantities of organic matter help in drainage and in avoiding water logging.

15. Vermicompost is prepared by using …………….. to hasten the process of decomposition of plant and animal refuse.

Match the following columns

We hope the given NCERT MCQ Questions for Class 9 Science Chapter 15 Improvement in Food Resources with Answers Pdf free download will help you. If you have any queries regarding Improvement in Food Resources CBSE Class 9 Science MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

Class 9 Science Biology MCQ:

• The Fundamental Unit of Life Class 9 MCQ
• Tissues Class 9 MCQ
• Diversity in Living Organisms Class 9 MCQ
• Why do we Fall Ill Class 9 MCQ
• Natural Resources Class 9 MCQ
• Improvement in Food Resources Class 9 MCQ

Check the below Online Education NCERT MCQ Questions for Class 9 Science Chapter 9 Force and Laws of Motion with Answers Pdf free download. MCQ Questions for Class 9 Science with Answers were prepared based on the latest exam pattern. We have Provided Force and Laws of Motion Class 9 Science MCQs Questions with Answers to help students understand the concept very well. https://ncertmcq.com/mcq-questions-for-class-9-science-with-answers/

You can refer to NCERT Solutions for Class 9 Science Chapter 9 Force and Laws of Motion to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Class 9 Science Physics Chapter 9 MCQ With Answers

Physics Class 9 Chapter 9 MCQs On Force and Laws of Motion

Force And Laws Of Motion Class 9 MCQ Question 1.
Which of the following statements is not correct for an object moving along a straight path in an accelerated motion?
(a) Its speed keeps changing
(b) Its velocity always changes
(c) It always goes away from the Earth
(d) A force is always acting on it

Force And Laws Of Motion MCQ Question 2.
According to the third law of motion, action and reaction
(a) always act on the same body
(b) always act on different bodies in opposite directions
(c) have same magnitude and directions
(d) act on either body at normal to each other

Class 9 Science Chapter 9 MCQ Question 3.
A goalkeeper in a game of football pulls his hands backwards after holding the ball shot at the goal. This enables the goalkeeper to
(a) exert larger force on the ball
(b) reduce the force exerted by the balls on the hands
(c) increase the rate of change of momentum
(d) decrease the rate of change of momentum

Class 9 Force And Laws Of Motion MCQ Question 4.
The inertia of an object tends to cause the object
(a) to increase its speed
(b) to decrease its speed
(c) to resist any change in its state of motion
(d) to decelerate due to friction

Physics MCQ Questions Class 9 Force And Laws Of Motion With Answers Question 5.
A passenger in a moving train tosses a coin which falls behind him. It means that motion of the train is
(a) accelerated
(b) uniform
(c) retarded
(d) along circular tracks

Class 9 Science Ch 9 MCQ Question 6.
An object of mass 2 kg is sliding with a constant velocity of 4 ms^-1 on a frictionless horizontal table. The force required to keep the object moving with the same velocity is
(a) 32 N
(b) 0 N
(c) 2 N
(d) 8 N

Ch 9 Science Class 9 MCQ Question 7.
Rocket works on the principle of conservation of
(a) mass
(b) energy
(c) momentum
(d) velocity

MCQ Of Force And Laws Of Motion Question 8.
A water tanker filled up to \(\frac{2}{3}\) of its height is moving with a uniform speed. On a sudden application of brakes, the water in the tank would
(a) move backward
(b) move forward
(c) be unaffected
(d) rise upwards

Force And Laws Of Motion MCQ Class 9 Question 9.
If the mass of a body is doubled and its velocity becomes half, then the linear momentum of the body will
(a) remain same
(b) become double
(c) become half
(d) become four times.

Class 9 Chapter 9 Science MCQ Question 10.
When a number of forces acting simultaneously on a body bring about a change in its state of rest or of uniform motion in a straight line, then these forces acting on the body are said to be
(a) balanced forces
(b) equal forces
(c) unbalanced forces
(d) opposite forces

MCQ On Force And Laws Of Motion Question 11.
When a car at high speed makes a sharp turn, the driver in a car tends to get thrown to the side opposite to the turn. This is due to the
(a) inertia of motion
(b) inertia of time
(c) inertia of rest
(d) inertia of direction

MCQ On Force And Laws Of Motion Class 9 Question 12.
A man is standing on a boat in still water. If he walks towards the shore, then the boat will
(a) move away from the shore
(b) move towards the shore
(c) remain stationary
(d) none of these

Class 9 Ch 9 Science MCQ Question 13.
Which of the following is an incorrect statement?
(a) Mass is measure of inertia of a body.
(b) Newton’s first law of motion is the law of inertia.
(c) Unbalanced force produces constant velocity.
(d) Newton’s third law talks about the direction of the force.

Chapter 9 Science Class 9 MCQ Question 14.
A ball is thrown vertically upward in a train moving with uniform velocity. The ball will
(a) fall behind the thrower
(b) fall ahead of the thrower
(c) return back to the thrower
(d) fall on the left of the thrower

Class 9 Physics Chapter 2 MCQ Question 15.
Which of the following is not an application of conservation of linear momentum?
(a) While firing a bullet, the gun must be held tight to the shoulder
(b) When a man jumps from a boat to the shore
(c) A rocket explodes on midway from the ground
(d) A body suspended from the hook of a spring balanced in a lift which is accelerated downward

Question 16.
When we stop pedalling, the bicycle begins to slow down. This is because of the
(a) Frictional force acting along the direction of motion of bicycle
(b) Air resistance which is in the direction of motion
(c) Frictional force acting opposite to the direction of motion of bicycle by the road
(d) Nature of the bicycle to stop after some time

Question 17.
Inertia is the property of a body by virtue of which, it cannot change by itself
(a) its state of rest
(b) its steady state of uniform motion
(c) its direction of motion
(d) all of these.

Question 18.
An athlete does not come to rest immediately after crossing the winning line due to the
(a) inertia of motion
(b) inertia of rest
(c) inertia of direction
(d) none of these

Question 19.
A bullet of mass A and velocity B is fired into a wooden block of mass C. If the bullet gets embedded in the wooden block, then the magnitude of velocity of the system just after the collision will be
(a) \(\frac{A+B}{AC}\)
(b) \(\frac{A+C}{B+C}\)
(c) \(\frac{AC}{B+C}\)
(d) \(\frac{AB}{A+C}\)

Question 20.
The masses of two bodies are in ratio 5 : 6 and their velocities are in ratio 1 : 2. Then their linear momentum will be in the ratio
(a) 5 : 6
(b) 1 : 2
(c) 12 : 5
(d) 5 : 12

Fill in the blanks

1. The momentum of an object is product of its mass and ……………..

2. According to second law of motion “the rate of change of momentum is directly proportional to ……………… applied”.

3. According to law of conservation of momentum “the total momentum of an isolated system is always ……………..

4. Recoiling of gun is an example of ………….. law of motion.

5. According to third law of motion “to every action there is an equal and ……………… reaction and they act on two different bodies”.

6. The forces are said to be balanced, if net force is ……………..

7. When a carpet is beaten with a stick, dust particle comes out. This phenomenon is an example of …………….. law of motion.

Match the following columns

Complete the crossword given below:

Across:
2. SI unit of force
3. Force which opposes relative motion
5. Measure of inertia
7. First law is also known as law of

Down:
1. Product of mass and velocity
4. Natural tendency of an object to resist a change in its states of motion or rest
6. Magnitude of resultant if forces are balanced

We hope the given NCERT MCQ Questions for Class 9 Science Chapter 9 Force and Laws of Motion with Answers Pdf free download will help you. If you have any queries regarding Force and Laws of Motion CBSE Class 9 Science MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

Class 9 Science Physics MCQ:

• Motion Class 9 MCQ
• Force and Laws of Motion Class 9 MCQ
• Gravitation Class 9 MCQ
• Work and Energy Class 9 MCQ
• Sound Class 9 MCQ

Check the below Online Education NCERT MCQ Questions for Class 6 Science Chapter 16 Garbage In Garbage Out with Answers Pdf free download. MCQ Questions for Class 6 Science with Answers were prepared based on the latest exam pattern. We have provided Garbage In Garbage Out Class 6 Science MCQs Questions with Answers to help students understand the concept very well.

You can refer to NCERT Solutions for Class 6 Science Chapter 16 Garbage In Garbage Out to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Class 6 Science Chapter 16 MCQ With Answers

Science Class 6 Chapter 16 MCQs On Garbage In Garbage Out

Choose the correct option in the following questions:

Garbage In Garbage Out Class 6 MCQ Question 1.
Which one of the following will add to garbage?
(a) Wrapper of a biscuit pack
(b) Tin of a cold drink
(c) Syringe used by a doctor
(d) All of these

Garbage Originates From MCQ Class 6 Question 2.
Which one can be used for making manure?
(a) Earthworms
(b) Houseflies
(c) Eagle
(d) Crow

Tea Leaves Cotton MCQ Class 6 Question 3.
Leaves falling from trees should be disposed by
(a) burning
(b) making compost by boiling and drying them
(c) making compost by vermicomposting
(d) any of these methods

Class 6 Science Chapter 16 MCQ  Question 4.
Garbage from cities is collected at
(a) landfill areas
(b) riversides
(c) inside the ponds and lakes
(d) near every colony

Garbage In Garbage Out MCQ Class 6 Question 5.
Which of the following can be recycled?
(a) Waste paper
(b) Leather shoes
(c) Animal waste
(d) Kitchen waste

Garbage In Garbage Out Class 6 MCQ With Answers Question 6.
Out of these, which one is a non-biodegradable waste?
(a) Paper
(b) Faecal matter
(c) Aluminium foil
(d) Cotton

Garbage Is MCQ Class 6  Question 7.
3’R’ means
(a) reduce, reuse and recycle
(b) rain, reuse and recycle
(c) rotting, reduce and reuse
(d) recycle, rain and rotting

MCQ On Garbage In Garbage Out Class 6 Question 8.
Which among the following will not pollute the soil?
(a) Aluminium foil
(b) Plastic
(c) Thermo Col
(d) Bread

MCQ Questions For Class 6 Science Chapter 16 Question 9.
Rotting is carried out by
(a) microbes
(b) insects
(c) ants
(d) amoeba

Class 6 Garbage In Garbage Out MCQ Question 10.
Materials that can be recycled are collected in
(a) Red bins
(b) Blue bins
(c) Yellow bins
(d) White bins

Match the following items given in column A with that in column B:

Fill in the blanks with appropriate words:

1. …………………… is an area where the garbage is collected.

2. Converting plant and animal wastes into manure is called ……………….. .

3. We need to generate …………….. waste.

4. Method of making compost using …………………. is called vermicomposting.

5. Municipal solid waste is commonly called ………………. .

State whether the statements given below are True or False:

1. Paper can be recycled to get useful products.

2. Drains get choked due to plastics thrown by us.

3. Plastics give out harmful gases on heating or burning.

4. Redworms eat upon green leaves on trees and make compost.

5. Plastics are eco-friendly.

We hope the given NCERT MCQ Questions for Class 6 Science Chapter 16 Garbage In Garbage Out with Answers Pdf free download will help you. If you have any queries regarding Garbage In Garbage Out CBSE Class 6 Science MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

Class 6 Science MCQ:

• Food Where Does It Come From Class 6 MCQ
• Components of Food Class 6 MCQ
• Fibre to Fabric Class 6 MCQ
• Sorting Materials Into Groups Class 6 MCQ
• Separation of Substances Class 6 MCQ
• Changes Around Us Class 6 MCQ
• Getting to Know Plants Class 6 MCQ
• Body Movements Class 6 MCQ
• The Living Organisms and Their Surroundings Class 6 MCQ
• Motion and Measurement of Distances Class 6 MCQ
• Light Shadows and Reflection Class 6 MCQ
• Electricity and Circuits Class 6 MCQ
• Fun with Magnets Class 6 MCQ
• Water Class 6 MCQ
• Air Around Us Class 6 MCQ
• Garbage In Garbage Out Class 6 MCQ

Check the below Online Education NCERT MCQ Questions for Class 7 Science Chapter 5 Acids, Bases and Salts with Answers Pdf free download. MCQ Questions for Class 7 Science with Answers were prepared based on the latest exam pattern. We have Provided Acids, Bases and Salts Class 7 Science MCQs Questions with Answers to help students understand the concept very well. https://ncertmcq.com/mcq-questions-for-class-7-science-with-answers/

You can refer to NCERT Solutions for Class 7 Science Chapter 5 Acids, Bases and Salts to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Class 7 Science Chapter 5 MCQ With Answers

Science Class 7 Chapter 5 MCQs On Acids, Bases and Salts

Choose the correct answer:

Class 7 Science Chapter 5 MCQ Question 1.
An oxide is acidic and has a pungent odour. It could be
(a) sulphur dioxide
(b) carbon dioxide
(c) sodium oxide
(d) nitrogen dioxide

Acid Bases And Salts Class 7 MCQ With Answers Question 2.
Out of these gases which one is used in fire extinguishers
(a) CO₂
(b) SO₂
(c) NO₂
(d) H₂S

MCQ Questions For Class 7 Science Chapter 5 Question 3.
The correct way of making a solution of acid in water is to
(a) add water to acid
(b) add acid to water
(c) mix acid and water simultaneously
(d) add water to acid in a shallow container

Acids Bases And Salts Class 7 MCQ Question 4.
Products of a neutralisation reaction are always:
(a) an acid and a base
(b) an acid and a salt
(c) a salt and water
(d) a salt and a base

Class 7 Science Ch 5 MCQ Question 5.
Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed.
(a) Yellow in both acid and base
(b) Yellow in acid and red in base
(c) Pink in acid and yellow in base
(d) Red in acid and blue in base

Ncert Class 7 Science Chapter 5 MCQ Question 6.
Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions, respectively are:
(a) red and blue
(b) blue and red
(c) pink and colourless
(d) colourless and pink

Science Class 7 Chapter 5 MCQ Question 7.
When the soil is too basic, plants do not grow well in it. To improve its quality what must be added to the soil?
(a) Organic matter
(b) Quick lime
(c) Slaked lime
(d) Calamine solution

Class 7 Chapter 5 Science MCQ Question 8.
Which of the following set of substances contain acids?
(a) Grapes, lime water
(b) Vinegar, soap
(c) Curd, milk of magnesia
(d) Curd, vinegar

Class 7th Science Chapter 5 MCQ Question 9.
On adding phenolphthalein indicator to a colourless solution, no change is observed. What is the nature of this solution?
(a) Basic
(b) Either acidic or basic
(c) Either acidic or neutral
(d) Either basic or neutral

Acid Base And Salts Class 7 MCQ Question 10.
Which of the following is an acid-base indicator?
(a) Vinegar
(b) Lime water
(c) Turmeric
(d) Baking soda

Match the following:

Fill in the blanks:

1. A solution of ammonium chloride turns blue litmus ………………..

2. A solution of sodium acetate turns red ……………….. blue.

3. Ammonium chloride is an example of ………………..

4. Acid + Metal → Salt + ………………..

5. An acid and a base react together forming a new compound, known as ………………..

6. Tap water is very ……………….. of electricity.

7. Corrosion is a ……………….. process.

8. All soluble hydroxides are ………………..

9. Methyl orange is an ………………..

10. ……………….. is used for manufacturing washing soda and baking soda.

11. Acetic acid is present in ……………….. while ……………….. is present in lemon.

12. Carbon burns in air to form ……………….. It is ……………….. oxide. Its aqueous solution turns ……………….. litmus ………………..

13. The gas which escapes out from many aerated soft drinks is ………………..

14. An aqueous solution of sodium oxide changes ……………….. litm us blue.

15. The chemical formula of lime water is ………………..

16. Neutralisation is the reaction between an acid and a ……………….. to form ………………. and ………………..

17. ……………….. reacts with lime water to produce ……………….. which is milky in appearance because it is ……………….. in water.

Choose the true and false statements from the following:

1. Ammonia, dissolved in water, shows acidic properties.

2. Orange juice turns blue litmus red.

3. Copper does not react with tamarind (imli) water.

4. Alum (phitkari) acts as an antacid.

We hope the given NCERT MCQ Questions for Class 7 Science Chapter 5 Acids, Bases and Salts with Answers Pdf free download will help you. If you have any queries regarding Acids, Bases and Salts CBSE Class 7 Science MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

Class 7 Science MCQ:

• Nutrition in Plants Class 7 MCQ
• Nutrition in Animals Class 7 MCQ
• Fibre to Fabric Class 7 MCQ
• Heat Class 7 MCQ
• Acids, Bases and Salts Class 7 MCQ
• Physical and Chemical Changes Class 7 MCQ
• Weather, Climate and Adaptations of Animals to Climate Class 7 MCQ
• Winds, Storms and Cyclones Class 7 MCQ
• Soil Class 7 MCQ
• Respiration in Organisms Class 7 MCQ
• Transportation in Animals and Plants Class 7 MCQ
• Reproduction in Plants Class 7 MCQ
• Motion and Time Class 7 MCQ
• Electric Current and Its Effects Class 7 MCQ
• Light Class 7 MCQ
• Water: A Precious Resource Class 7 MCQ
• Forests: Our Lifeline Class 7 MCQ
• Wastewater Story Class 7 MCQ

Check the below Online Education NCERT MCQ Questions for Class 8 Science Chapter 11 Force and Pressure with Answers Pdf free download. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. We have provided Force and Pressure Class 8 Science MCQs Questions with Answers to help students understand the concept very well. https://ncertmcq.com/mcq-questions-for-class-8-science-with-answers/

You can refer to NCERT Solutions for Class 8 Science Chapter 11 Force and Pressure to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Class 8 Science Chapter 11 MCQ With Answers

Science Class 8 Chapter 11 MCQs On Force and Pressure

Choose the correct option.

Force And Pressure Class 8 MCQ Question 1.
The pressure which is exerted by air around us is known as
(a) force
(b) atmospheric pressure
(c) muscular force
(d) friction

Class 8 Science Chapter 11 MCQ Question 2.
Force acting on per unit area is called
(a) non-contact forces
(b) contact forces
(c) force
(d) pressure

Class 8 Force And Pressure MCQ Question 3.
A ___________ exerted by an object on another is a force.
(a) Push or pull
(b) Contact or non-contact force
(c) Pressure
(d) Magnitude

MCQ On Force And Pressure Class 8 Question 4.
The force exerted by the earth to pull the object towards itself is called
(a) electrostatic force
(b) gravitational force
(c) muscular force
(d) contact force

Class 8 Science Ch 11 MCQ Question 5.
Muscular force is also called ___________ force.
(a) non-contact
(b) contact
(c) gravitational
(d) magnetic

MCQ Of Force And Pressure Class 8 Question 6.
The force exerted by a charged body on another char
(a) gravitational force
(b) electrostatic force
(c) non-contact force
(d) contact force

Ch 11 Science Class 8 MCQ Question 7.
Force changes the
(a) motion of body
(b) speed of body
(c) shape of body
(d) all of these

MCQ Questions For Class 8 Science Chapter 11 Question 8.
The force exerted by our muscle is called
(a) electrostatic force
(b) muscular force
(c) gravitational force
(d) non-contact force

Force And Pressure MCQ Class 8 Question 9.
1 kilogram weight is equal to
(a) 98 N
(b) 9.8 N
(c) 0.98 N
(d) 0.098 N

Class 8 Chapter 11 Science MCQ Question 10.
A spring balance is used for measuring
(a) mass
(b) weight
(c) pressure
(d) speed

Class 8 Science Force And Pressure MCQ Question 11.
Two boys A and B are applying force on a block. If the block moves towards the boy A, which one of the following statements is correct?
(a) Magnitude of force applied by A is greater than that of B.
(b) Magnitude of force applied by A is smaller than that of B.
(c) Net force on the block is towards B.
(d) Magnitude of force applied by A is equal to that of B.

Force And Pressure Class 8 MCQ With Answers Question 12.
When two forces act in opposite directions, then net force acting is the
(a) sum of two forces
(b) difference between two forces
(c) both of these
(d) none of these

Ncert Class 8 Science Chapter 11 MCQ Question 13.
The strength of force is expressed by its
(a) weight
(b) mass
(c) magnitude
(d) longitudinal force

MCQ Force And Pressure Class 8 Question 14.
Leaves fall down on the ground due to
(a) electrostatic force
(b) magnetic force
(c) gravitational force
(d) muscular force

Class 8 Ch 11 Science MCQ Question 15.
State of motion is described by
(a) Position of rest
(b) Position of motion
(c) Both by the state of rest or motion
(d) None of these

Question 16.
When the hammer strikes the gong of an electric bell, which of the following force is responsible for the movement of hammer?
(a) Gravitational force alone
(b) Magnetic force alone
(c) Electrostatic force alone
(d) Frictional force alone

Question 17.
During dry weather, while combing hair, sometimes we experience hair flying apart. The force respon¬sible for this is
(a) force of gravity
(b) force of friction
(c) electrostatic force
(d) magnetic force

Question 18.
A container is filled with water as shown in the given figure. Which of the following statements is correct about pressure of water?

(a) Pressure at A > Pressure at B > Pressure at C
(b) Pressure at A = Pressure at B = Pressure at C
(c) Pressure at A < Pressure at B > Pressure at C
(d) Pressure at A < Pressure at B < Pressure at C

Question 19.
Two objects repel each other. This repulsion could be due to
(a) frictional force only
(b) electrostatic force only
(c) magnetic force only
(d) either a magnetic or an electrostatic force

Question 20.
Which one of the following forces is a contact force?
(a) Force of gravity
(b) Magnetic force
(c) Force of friction
(d) Electrostatic force

Question 21.
A brick is kept in three different ways on a table as shown in given figure. The pressure exerted by the brick on the table will be

(a) maximum in position A
(b) maximum in position C
(c) maximum in position B
(d) equal in all cases

Question 22.
A push or pull on an object is called
(a) Pressure
(b) Push-pull
(c) Force
(d) All of the above

Question 23.
If two forces act in the opposite directions on an object, the net force acting on it is the
(a) Sum of the two forces
(b) difference between the two forces
(c) Multiplication of the two forces
(d) Division of the two forces

Question 24.
Which of the following is proper example(s) to explain that force on an object may change its shape
(a) A ball of dough rolled into chapati
(b) Pressing a rubber ball kept on table
(c) Making model using clay
(d) All of the above

Question 25.
A ball rolling on the ground slows down and finally stops. This is because of
(a) Force
(b) Less force applied
(c) Friction
(d) None of the above

Question 26.
Force of friction always acts on moving objects and its direction shall be ____
(a) On any direction
(b) Along the direction of motion
(c) Perpendicular to the direction of motion
(d) Opposite to the direction of motion

Question 27.
If In a tug-o-war, when two teams are pulling a rope, and the rope does not move towards any team, it implies that
(a) Equal force is being applied in the same direction
(b) Equal Force is being applied in opposite direction
(c) No force is applied in any direction
(d) Cannot be explained

Question 28.
An example of a non- contact force is
(a) Force exerted by us to lift a bucket
(b) Push a stationary car
(c) Force exerted by magnet
(d)  Hit a cricket ball for a 6 run

Question 29.
Pressure =
(a) Area / force on which it acts
(b) force / area on which it acts
(c) Volume / force on which it acts
(d) Force / volume on which it acts

Question 30.
Gravity is
(a) Repulsive
(b) Attraction + Repulsive force
(c) Attractive force
(d) Not a force

Question 31.
A batsman hits the ball for a boundary past the bowler i.e. four runs. The batsman thus
(a) Changes the direction & speed of the ball
(b) Does not change the direction but speed only
(c) Does not change the speed but direction only
(d) Does not change either direction or speed

Match the items given in column I suitably with those given in column II.

Fill in the blanks with suitable word/s.

1. We ___________ the bucket to take out water from well.

2. The strength of a force is usually expressed by its ___________.

3. ___________ force is the force resulting due to the action of muscles.

4. The envelop of air all around us is called ___________.

5. To open a door we or ___________ the door.

6. Force of friction is an example of ___________ force.

7. Force ___________ is called pressure.

8. Force has ___________ as well as direction.

9. Fruits fall ___________ due to the force of gravity.

10. The body at rest is called ___________ body.

11. ___________ and ___________ forces are the two kinds of forces.

12. Force exerted by magnet is called ___________ force.

13. We apply force on ___________ while walking.

14. Force is ___________ to pressure.

15. The ___________ is measured by an instrument called barometer.

State whether the given statements are true or false.

1. Force applied on an object in opposite directions add to one another.

2. Pressure does not depend on area of contact.

3. A force can change the state of motion of an object.

4. Force cannot change the speed of an object.

5. Atmospheric pressure is less at higher altitudes.

6. Force of gravity is a contact force.

7. Muscular force is also known as contact force.

8. Pascal is the unit of force.

9. To move an object faster it has to be pushed or pulled repeatedly.

10. Magnitude is the strength of force.

11. Force can change the shape of an object.

12. At least two objects must interact for a force to come into play.

13. Magnetic force is a non-contact force.

14. An apple from a tree falls on the ground due to the force of gravity.

15. Newton is the unit of force.

We hope the given NCERT MCQ Questions for Class 8 Science Chapter 11 Force and Pressure with Answers Pdf free download will help you. If you have any queries regarding Force and Pressure CBSE Class 8 Science MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

Class 8 Science MCQ:

• Crop Production and Management Class 8 MCQ
• Microorganisms: Friend and Foe Class 8 MCQ
• Synthetic Fibres and Plastics Class 8 MCQ
• Materials: Metals and Non-Metals Class 8 MCQ
• Coal and Petroleum Class 8 MCQ
• Combustion and Flame Class 8 MCQ
• Conservation of Plants and Animals Class 8 MCQ
• Cell Structure and Functions Class 8 MCQ
• Reproduction in Animals Class 8 MCQ
• Reaching the Age of Adolescence Class 8 MCQ
• Force and Pressure Class 8 MCQ
• Friction Class 8 MCQ
• Sound Class 8 MCQ
• Chemical Effects of Electric Current Class 8 MCQ
• Some Natural Phenomena Class 8 MCQ
• Light Class 8 MCQ
• Stars and the Solar System Class 8 MCQ
• Pollution of Air and Water Class 8 MCQ

Check the below NCERT MCQ Questions for Class 6 Science Chapter 3 Fibre to Fabric with Answers Pdf free download. MCQ Questions for Class 6 Science with Answers were prepared based on the latest exam pattern. We have provided Fibre to Fabric Class 6 Science MCQs Questions with Answers to help students understand the concept very well.

You can refer to NCERT Solutions for Class 6 Science Chapter 3 Fibre to Fabric to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Class 6 Science Chapter 3 MCQ With Answers

Science Class 6 Chapter 3 MCQs On Fibre to Fabric

Choose the correct option in the following questions:

Fibre To Fabric Class 6 MCQ With Answers Question 1.
Which one of the following is a synthetic fibre?
(a) Nylon
(b) Rayon
(c) Polyester
(d) All of these

Class 6 Science Chapter 3 MCQ Question 2.
Which is a natural fibre?
(a) Silk
(b) Nylon
(c) Rayon
(d) All of these

MCQ Questions For Class 6 Science Chapter 3 Question 3.
The clothes are made up of thinner and thinner strands called
(a) yam
(b) thread
(c) fibre
(d) fabric

Fibre To Fabric Class 6 MCQ Question 4.
Separation of fibres of cotton from its seeds is known as
(a) weaving
(b) spinning
(c) knitting
(d) ginning

MCQ On Fibre To Fabric Class 6 Question 5.
Jute fibres are obtaine from
(a) stem of jute plant
(b) seeds of jute plant
(c) fruit covering of jute plant
(d) roots of jute plant

Ncert Class 6 Science Chapter 3 MCQ Question 6.
Number of yams used to make fabric by weaving and knitting are
(a) two sets of yams in each case
(b) single yam in each case
(c) two sets of yams in weaving and single in knitting
(d) single yam in weaving and two sets in knitting

Class 6 Science Chapter 3 MCQ With Answers Question 7.
Weaving of fabric is done in
(a) handlooms
(b) power looms
(c) both (a) and (b)
(d) takli

Class 6 Fibre To Fabric MCQ Question 8.
Which one is spinning device?
(a) Takli
(b) Loom
(c) Charkha
(d) Both (a) and (c)

Fiber To Fabric Class 6 MCQ Question 9.
Which of the following is a plant fibre?
(a) Wool
(b) Silk
(c) Cotton
(d) Nylon

Class 6 Science Ch 3 MCQ Question 10.
The right time to cut jute plants is
(a) matured stage
(b) before flowering stage
(c) flowering stage
(d) any time after flowering

Match the following items given in Column A with that in Column B.

Fill in the blanks with appropriate words:

1. Clothes are made up of …………… .

2. Different clothing materials have ………………. properties.

3. Cotton plants need…………………. climate.

4. Cotton is planted in the ………….. .

5. …………… soil is excellent for the cultivation of cotton.

6. …………………….. Usually cotton is picked from the plants.

7. Separation of cotton fibres from their seeds is called …………….. .

8. A ………………. of cotton is a loose strand of cotton fibres.

9. In villages, the cloth is woven on small scale in …………… .

10. Jute is cultivated in ……………… season.

11. Jute is grown in …………………. soil.

12. On large scale, cotton clothes are made by machines in ……………. .

13. Twisting of fibres into yarn increases the ………………. of fibres.

14. Cotton fibres are obtained from the …………….. of cotton plant.

15. Jute fibre is obtained from the …………………. of jute plant.

16. Tightly compressed bundles of cotton are called ……………. .

17. The process of getting fibres from the jute stem is called …………… .

18. People migrated to colder regions only after the invention of …………… .

State whether the statements given below are True or False:

1. All the plants have fibres in their body structure.

2. Cotton is the most important industrial crop.

3. India was the proud inventor of cotton clothing.

4. Cotton plants need cold climate.

5. Alluvial soil is best suited for cotton.

6. Jute is obtained from the stem of ‘putson’.

7. Jute fibres are quite strong, 6-8 feet long and have a silky lusture.

8. Primitive men and women had no idea about clothes.

9. Type of clothing which we wear is influenced by climate, occupation, culture and daily needs.

10. Cotton and woollen clothes are smooth to touch.

11. Clothes are made from threads, and threads, in turn, are spun from fibres,

12. Coconut fibres are good for making yarn.

13. Twisting of fibres into yam increases cohesion.

14. While working in kitchen, we should wear cotton clothes.

15. Clothes protect us from adverse weather condition.

We hope the given NCERT MCQ Questions for Class 6 Science Chapter 3 Fibre to Fabric with Answers Pdf free download will help you. If you have any queries regarding Fibre to Fabric CBSE Class 6 Science MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

Class 6 Science MCQ:

• Food Where Does It Come From Class 6 MCQ
• Components of Food Class 6 MCQ
• Fibre to Fabric Class 6 MCQ
• Sorting Materials Into Groups Class 6 MCQ
• Separation of Substances Class 6 MCQ
• Changes Around Us Class 6 MCQ
• Getting to Know Plants Class 6 MCQ
• Body Movements Class 6 MCQ
• The Living Organisms and Their Surroundings Class 6 MCQ
• Motion and Measurement of Distances Class 6 MCQ
• Light Shadows and Reflection Class 6 MCQ
• Electricity and Circuits Class 6 MCQ
• Fun with Magnets Class 6 MCQ
• Water Class 6 MCQ
• Air Around Us Class 6 MCQ
• Garbage In Garbage Out Class 6 MCQ

Check the below Online Education NCERT MCQ Questions for Class 7 Science Chapter 17 Forests: Our Lifeline with Answers Pdf free download. MCQ Questions for Class 7 Science with Answers were prepared based on the latest exam pattern. We have Provided Forests: Our Lifeline Class 7 Science MCQs Questions with Answers to help students understand the concept very well. https://ncertmcq.com/mcq-questions-for-class-7-science-with-answers/

You can refer to NCERT Solutions for Class 7 Science Chapter 17 Forests: Our Lifeline to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Class 7 Science Chapter 17 MCQ With Answers

Science Class 7 Chapter 17 MCQs On Forests: Our Lifeline

Choose the correct answer:

Class 7 Science Chapter 17 MCQ Question 1.
Which one of the following is not a wild animal?
(a) Bear
(b) Bison
(c) Jackal
(d) Goat

Forest Our Lifeline Class 7 MCQ Chapter 17 Question 2.
Which one of the following is an animal product?
(a) Gum
(b) Catechu
(c) Honey
(d) Rubber

Forests Our Lifeline Class 7 MCQ Chapter 17 Question 3.
Roof of the forest made by the branches of the tall trees is called
(a) canopy
(b) crown
(c) understoreys
(d) none of these

Forest Our Lifeline Class 7 MCQs Chapter 17 Question 4.
Understoreys are formed due to
(a) different types of crowns
(b) different sizes of crown
(c) different heights of trees
(d) all of these

MCQ Questions For Class 7 Science Chapter 17 Question 5.
Decomposers convert the dead plant and animal tissues into
(a) clay
(b) humus
(c) inorganic debris
(d) soil

Forest Our Lifeline Class 7 Quiz Chapter 17 Question 6.
Arrange the following components of a food chain in proper sequence – grass, frog, eagle, insects, snake.
(a) Grass → insects → frog → snake → eagle.
(b) Grass → snake → insects → frog → eagle.
(c) Grass → snake → eagle → insects → frog.
(d) All are possible

MCQ Of Forest Our Lifeline Class 7 Chapter 17 Question 7.
Sequence that represents the series of eating and being eaten is called
(a) food series
(b) food chain
(c) food web
(d) food hub

Forests: Our Lifeline Class 7 MCQ Chapter 17 Question 8.
Which one of the following is a role of forests?
(a) Provide food, shelter, water and medicines
(b) Prevent soil erosion
(c) Prevent flood
(d) All the above

Class 7 Forest Our Lifeline MCQ Chapter 17 Question 9.
Which among the following forest animals is the smallest?
(a) Fox
(b) Boar
(c) Bison
(d) Porcupine

Ncert Class 7 Science Chapter 17 MCQ Question 10.
Which of the following is not the name of a tree?
(a) Teak
(b) Sal
(c) Porcupine
(d) Kachnar

Match the following:

Fill in the blanks:

1. In a forest, trees form the uppermost layer, followed by ………………. The ………………. form the lowest layer of vegetation.

2. Different layers of vegetation provide ………………. and ………………. for animals.

3. The forest keeps on ………………. and ………………. and can ……………….

4. Forests protect the ………………. from erosion.

5. ………………. helps forests to grow and regenerate.

6. Branchy part of a tree above the stem is known as the ………………. of the tree.

7. Plants release ………………. through the process of photosynthesis.

8. Microorganisms convert dead animal and plant tissues into a dark-coloured substance called ………………. .

Choose the true and false statements from the following:

1. We get various useful products from the forests surrounding us.

2. Forest is a system comprising various plants, animals and microorganisms.

3. Forests must be cleared to make the human life safe and comfortable.

4. Different layers of vegetation provide food and shelter for animals, birds and insects.

5. Plants release carbon dioxide in the process of photosynthesis.

6. The various components of the forest are interdependent on one another.

7. In the forest there is interaction between soil, water, air, and living organisms.

8. Forests are the lifeline for the forest-dwelling communities.

9. Forests are the result of hard working of ancient people who have planted most of the forests.

10. Forests influence climate, water cycle and air quality.

We hope the given NCERT MCQ Questions for Class 7 Science Chapter 17 Forests: Our Lifeline with Answers Pdf free download will help you. If you have any queries regarding Forests: Our Lifeline CBSE Class 7 Science MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

Class 7 Science MCQ:

• Nutrition in Plants Class 7 MCQ
• Nutrition in Animals Class 7 MCQ
• Fibre to Fabric Class 7 MCQ
• Heat Class 7 MCQ
• Acids, Bases and Salts Class 7 MCQ
• Physical and Chemical Changes Class 7 MCQ
• Weather, Climate and Adaptations of Animals to Climate Class 7 MCQ
• Winds, Storms and Cyclones Class 7 MCQ
• Soil Class 7 MCQ
• Respiration in Organisms Class 7 MCQ
• Transportation in Animals and Plants Class 7 MCQ
• Reproduction in Plants Class 7 MCQ
• Motion and Time Class 7 MCQ
• Electric Current and Its Effects Class 7 MCQ
• Light Class 7 MCQ
• Water: A Precious Resource Class 7 MCQ
• Forests: Our Lifeline Class 7 MCQ
• Wastewater Story Class 7 MCQ

Check the below NCERT MCQ Questions for Class 7 Science Chapter 14 Electric Current and Its Effects with Answers Pdf free download. MCQ Questions for Class 7 Science with Answers were prepared based on the latest exam pattern. We have Provided Electric Current and Its Effects Class 7 Science MCQs Questions with Answers to help students understand the concept very well. https://ncertmcq.com/mcq-questions-for-class-7-science-with-answers/

You can refer to NCERT Solutions for Class 7 Science Chapter 14 Electric Current and Its Effects to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Class 7 Science Chapter 14 MCQ With Answers

Science Class 7 Chapter 14 MCQs On Electric Current and Its Effects

Choose the correct answer:

Electric Current And Its Effects Class 7 MCQ Question 1.
In making a battery
(a) positive terminal of one cell is connected to the negative terminal of the next cell
(b) positive terminal of one cell is connected to the positive terminal of the next cell
(c) negative terminal of one cell is connected to the negative terminal of the next cell
(d) none of the above

Class 7 Science Chapter 14 MCQ Question 2.
Where can the key or switch be placed in the circuit?
(a) Left side of the battery
(b) Right side of the battery
(c) Can be placed anywhere in the circuit
(d) Near the positive terminal of the bulb

Class 7 Electric Current And Its Effects MCQ Question 3.
Which one of the following is based on the heating effect of current?
(a) Geyser
(b) Hair dryer
(c) Immersion rod
(d) All of these

Electric Current And Its Effects Class 7 MCQ With Answers Question 4.
The coil of wire contained in an electric heater is known as
(a) component
(b) element
(c) circuit
(d) spring

MCQ On Electric Current And Its Effects Class 7 Question 5.
The amount of heat produced in a wire depends on
(a) material
(b) length
(c) thickness
(d) all of these

Ncert Class 7 Science Chapter 14 MCQ Question 6.
Which mark is necessary on electric appliances?
(a) AGMARK
(b) ISI
(c) FICCI
(d) KSK

Class 7 Science Ch 14 MCQ Question 7.
When an electric current flows through a copper wire AB as shown in Figure, the wire

(a) deflects a magnetic needle placed near it
(b) becomes red hot
(c) gives electric shock
(d) behaves like a fuse

MCQ Questions For Class 7 Science Chapter 14 Question 8.
Choose the statement which is not correct in the case of an electric fuse.
(a) Fuses are inserted in electric circuits of all buildings.
(b) There is a maximum limit on the current which can safely flow through the electric circuits.
(c) There is a minimum limit on the current which can safely flow in the electric circuits.
(d) If a proper fuse is inserted in a circuit it will blow off if current exceeds the safe limit.

Electricity Class 7 MCQ With Answers Question 9.
When a switch is in OFF position.
(i) circuit starting from the positive terminal of the cell stops at the switch.
(ii) circuit is open.
(iii) no current flows through it.
(iv) current flows after some time.
Choose the combination of correct answer from the following:
(a) all are correct
(b) (ii) and (iii) are correct
(c) only (iv) is correct
(d) only (i) and (ii) are correct

Electric Current And Its Effects MCQ Question 10.
Which of the following precautions need not be taken while using electric gadgets / appliances/circuit?
(a) We should never touch a lighted electric bulb connected to the mains.
(b) We should never experiment with the electric supply from the mains or a generator or an inverter.
(c) We should never use just any wire or strip of metal in place of a fuse.
(d) We should never turn the switch in ON position.

Match the following:

Fill in the blanks:

1. Our body is a ………………….. of electricity.

2. An electric cell produces electricity from the ………………….. in it.

3. In an electric circuit a fuse is a ………………….. to prevent possible fire.

4. A combination of two or more cells is called a ………………….. .

5. The coil of wire in an electric heater is called an ………………….. .

6. A ………………….. is a safety device which prevents damages to electrical circuits and possible fires.

7. The wire gets ………………….. when an electric current passes through it.

8. We must look for ………………….. mark on electrical appliances.

9. When electric current passes through a wire, it behaves like a magnet. It is the ………………….. effect of current.

10. Crane has a strong ………………….. attached to it.

Choose the true and false statements from the following:

1. It is convenient to represent electric components by symbols.

2. A connecting wire is symbolized by a zig-zag line in the circuit diagram.

3. When an electric current flows through a wire, the wire gets heated.

4. The key or switch can be placed anywhere in the circuit.

5. The amount of heat produced in a wire depends on its material, length and thickness.

6. CFLs consume more electricity than ordinary bulbs.

7. For different requirements, the wires of different materials, different lengths and thicknesses are used.

8. A fuse is used to save energy in electrical circuits.

9. MCBs are the switches which automatically turn off when current in a circuit exceeds the safe limit.

10. When an electric current flows through a wire, it behaves like a magnet.

We hope the given NCERT MCQ Questions for Class 7 Science Chapter 14 Electric Current and Its Effects with Answers Pdf free download will help you. If you have any queries regarding Electric Current and Its Effects CBSE Class 7 Science MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

Class 7 Science MCQ:

• Nutrition in Plants Class 7 MCQ
• Nutrition in Animals Class 7 MCQ
• Fibre to Fabric Class 7 MCQ
• Heat Class 7 MCQ
• Acids, Bases and Salts Class 7 MCQ
• Physical and Chemical Changes Class 7 MCQ
• Weather, Climate and Adaptations of Animals to Climate Class 7 MCQ
• Winds, Storms and Cyclones Class 7 MCQ
• Soil Class 7 MCQ
• Respiration in Organisms Class 7 MCQ
• Transportation in Animals and Plants Class 7 MCQ
• Reproduction in Plants Class 7 MCQ
• Motion and Time Class 7 MCQ
• Electric Current and Its Effects Class 7 MCQ
• Light Class 7 MCQ
• Water: A Precious Resource Class 7 MCQ
• Forests: Our Lifeline Class 7 MCQ
• Wastewater Story Class 7 MCQ