NCERT Solutions for Class 6 Maths Chapter 6 Integers Ex 6.1

NCERT Solutions for Class 6 Maths Chapter 6 Integers Ex 6.1 are part of NCERT Solutions for Class 6 Maths. Here we have given NCERT Solutions for Class 6 Maths Chapter 6 Integers Ex 6.1.

Board CBSE
Textbook NCERT
Class Class 6
Subject Maths
Chapter Chapter 6
Chapter Name Integers
Exercise  Ex 6.1
Number of Questions Solved 10
Category NCERT Solutions

NCERT Solutions for Class 6 Maths Chapter 6 Integers Ex 6.1

Question 1.
Write opposite of the following:
(a) Increase in weight
(b) 30 km north
(c) 326 BC
(d) Loss of Rs. 700
(e) 100 m above sea level.
Solution.
(a) Decrease in weight
(b) 30 km south
(c) 326 AD
(d) Gain of Rs. 700
(e) 100 m below sea level

Question 2.
Represent the following numbers as integers with appropriate signs.
(a) An airplane is flying at a height two thousand meters above the ground.
(b) A submarine is moving at depth, eight hundred meters below the sea level.
(c) A deposit of rupees two hundred.
(d) Withdrawal of rupees seven hundred.
Solution.
(a) + 2000
(b) – 800
(c) + 200
(d) – 700.

Question 3.
Represent the following numbers on a number line:
(a) + 5
(b) -10
(c) + 8
(d) -7
Solution.
NCERT Solutions for Class 6 Maths Chapter 6 Integers 1

Question 4.
Adjacent figure is a vertical number line, representing integers. Observe it and locate the following points :
(a) If point D is + 8, then which point is – 8?
(b) Is point G a negative integer or a positive integer?
(c) Write integers for points B and E.
(d) Which point marked on this number line has the least value?
(e) Arrange all the points in p-decreasing order of value.
Solution.
NCERT Solutions for Class 6 Maths Chapter 6 Integers 2
(a) F
(b) negative integer
(c) B → + 4, E → 10
(d) E
(e) D, C, B, A, O, H, G, F, E.

Question 5.
Following is the list of temperatures of five places in India, on a particular day of the year.
Solution.

Place Temperature
Siachin 10°C below 0°C ………….
Shimla 2°C below 0°C …………
Ahmedabad 30°C above 0°C ………….
Delhi 20°C above 0°C ………..
Srinagar 5°C below 0°C ………….

NCERT Solutions for Class 6 Maths Chapter 6 Integers 3
(a) Write the temperature of these places in the form of integers in the blank column.
(b) Following is the number line representing the temperature in degree Celsius.
Plot the name of the city against its temperature.
(c) Which is the coolest place?
(d) Write the names of the places whose temperature are above 10°C.
Solution.
(a)

Place Temperature
Siachin 10°C below 0°C – 10°C
Shimla 2°C below 0°C – 2°C
Ahmedabad 30°C above 0°C + 30°C
Delhi 20°C above 0°C + 20°C
Srinagar 5°C below 0°C – 5°C

(b)
NCERT Solutions for Class 6 Maths Chapter 6 Integers 4
(c) Siachin is the coolest place.
(d) Ahmedabad and Delhi.

Question 6.
In each of the following pairs, which number is to the right of the other on the number line?
(a) 2, 9
(b) -3,-8
(c) 0,-1
(d) – 11, 10
(e) -6,6
(f) 1,- 100
Solution.
(a) 2, 9
The number 9 is to the right of the number 2.
(b) -3,-8
The number – 3 is to the right of the number -8.
(c) 0,-1
The number 0 is to the right of the number – 1.
(d) – 11,10
The number 10 is to the right of the number -11.
(e) -6, 6
The number 6 is to the right of the number – 6.
(f) 1, -100
The number 1 is to the right of the number – 100.

Question 7.
Write all the integers between the given pairs (write them in the increasing order)
(a) 0 and – 7
(b) -4 and 4
(c) – 8 and -15
(d) – 30 and – 23.
Solution.
(a) 0 and – 7
The integers between 0 and – 7 in increasing order are – 6, – 5, – 4, – 3, – 2 and – 1.
(b) – 4 and 4
The integers between – 4 and 4 in increasing order are – 3, – 2, – 1, 0, 1, 2 and 3.
(c) – 8 and – 15
The integers between – 8 and – 15 in increasing order are – 14, – 13, – 12, – 11, – 10 and – 9.
(d) – 30 and – 23
The integers between – 30 and – 23 in increasing order are – 29, – 28, – 27, – 26, – 25 and – 24.

Question 8.
(a) Write four negative integers greater than – 20.
(b) Write four negative integers less than -10.
Solution.
(a) Four negative integers greater than 20 are – 19, – 18, – 17 and – 16.
(b) Four negative integers less than – 10 and 11,- 12,- 13 and -14

Question 9.
For the following statements write True (T) or False (F). If the statement is false, correct the state­ment.
(a) -8 is to the right of- 50 on a number line.
(b) – 100 is to the right of – 50 on a number line.
(c) A smallest negative integer is – 1.
(d) – 26 is larger than -25
Solution.
(a) True (T)
(b) False (F); – 100 is to the left of – 50 on a number line.
(c) False (F); Greatest negative integer is – 1.
(d) False (F); – 26 is smaller than – 25.

Question 10.
Draw a number line and answer the following:
(a) Which number will we reach if we move 4 numbers to the right of-2?
(b) Which number will we reach if we move 5 numbers to the left of 1?
(c) If we are at -8 on the number line, in which direction should we move to reach -13?
(d) If we are at-6 on the number line, in which direction should we move to reach -l?
Solution.
(a) We will reach number 2.
(b) We will reach the number – 4.
(c) We should move in the left direction.
(d) We should move in the right direction

 

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NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas Ex 4.1

NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas Ex 4.1 are part of NCERT Solutions for Class 6 Maths. Here we have given NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas Ex 4.1.

Board CBSE
Textbook NCERT
Class Class 6
Subject Maths
Chapter Chapter 4
Chapter Name Basic Geometrical Ideas
Exercise  Ex 4.1
Number of Questions Solved 6
Category NCERT Solutions

NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas Ex 4.1

Question 1.
Use the figure to name:
(a) Five points
(b) A line
(c) Four rays
(d) Five line segments.
Solution :
(a) O, B, C. D, E
NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas 1
Question 2.
Name the line given in all possible (twelve) ways, choosing only two letters at a time from the four given.
Solution :
NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas 2
NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas 3

Question 3.
Use the figure to name:
(a) The line containing point E.
(b) The line passing through A.
(c) The line on which O lies
(d) Two pairs of intersecting lines.
NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas 4
Solution :
(a) \(\overleftrightarrow { AE }\), etc.
(b) \(\overleftrightarrow { AE }\), etc.
(c) \(\overleftrightarrow { CO } or\overleftrightarrow { OC }\)
(d) \(\overleftrightarrow { CO, } \overleftrightarrow { AE } ;\overleftrightarrow { AE } ,\overleftrightarrow { EF }.\)

Question 4.
How many lines can pass through
(a) one given point?
(b) two given points?
Solution :
(a) Countless lines can pass through one given point.
(b) One and only one line can pass through two given points.

Question 5.
Draw a rough figure and label suitably in each of the following cases :
(a) Point P lies on \(\bar { AB } \)
(b) \(\overleftrightarrow { XY }\) and \(\overleftrightarrow { PQ }\) intersect at M.
(c) Line contains E and F but not D.
(d) \(\bar { Op } \) and \(\bar { OQ } \) meet at O.
Solution :
(a)
NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas 5
(b)
NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas 6
(c)
NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas 7
(d)
NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas 8
Question 6.
Consider the following figure of line \(\bar { MN } \) Say whether following statements are true or false in context of the given figure.
(a) Q, M, O, N, P are points on the line \(\bar { MN } \)
(b) M, O, N are points on a line segment \(\bar { MN } \).
(c) M and N are end points of line segment \(\bar { MN } \).
NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas 9
(d) O and N are end points of line segment \(\bar { OP } \).
(e) M is one of the end points of line segment \(\bar { QO } \).
(f) M is point on ray \(\overrightarrow { OP }\).
(g) Ray \(\overrightarrow { OP }\) is different from ray \(\overrightarrow { QP }\).
(h) Ray \(\overrightarrow { OP }\) is same as ray \(\overrightarrow { OM }\).
(i) Ray \(\overrightarrow { OM }\) is not opposite to ray \(\overrightarrow { OP }\).
(j) O is not an initial point of \(\overrightarrow { OP }\).
(k) N is the initial point of \(\overrightarrow { NP }\) and \(\overrightarrow { NM }\).
Solution :
(a) True
(b) True
(c) True
(d) False
(e) False
(f) False
(g) True
(h) False
(i) False
(j) False
(k) True.

 

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NCERT Solutions for Class 6 Science Chapter 16 Garbage in, Garbage out

NCERT Solutions for Class 6 Science Chapter 16 Garbage in, Garbage out are part of NCERT Solutions for Class 6 Science. Here we have given NCERT Solutions for Class 6 Science Chapter 16 Garbage in, Garbage out.

Board CBSE
Textbook NCERT
Class Class 6
Subject Science
Chapter Chapter 16
Chapter Name Garbage in, Garbage out
Number of Questions Solved 6
Category NCERT Solutions

NCERT Solutions for Class 6 Science Chapter 16 Garbage in, Garbage out

NCERT TEXTBOOK EXERCISES
(Page 164)

Question 1.
(a) Which kind of garbage is not converted into compost by the red-worms?
Answer:
Garbage containing salt, pickles, oil, vinegar, meat, and milk preparations is not converted into compost by the red-worms.

(b) Have you seen any other organism besides red-worms, in your pit? If yes, try to find out their names. Draw pictures of these?
Answer:
Yes.

Question 2.
Discuss:

  1. Is garbage disposal the responsibility only of the government?
  2. Is it possible to reduce the problems relating to the disposal of garbage?

Answer:

  1. In most cities, the responsibility of garbage disposal is on Municipal Corporations and most of the people realize no responsibility of their own. We should realize that cleanliness is the collective responsibility of both, the people and the government. If people are not aware of their responsibilities, government alone cannot successfully manage the garbage disposal. We must have the correct ideas and we must try our best to make our surroundings clean. We should not throw our wastes here and there. We should manage disposal problems at the level of our mohallas rather than waiting for government efforts.
  2. Yes. It is possible to reduce the problems relating to the disposal of garbage. We can try 3‘R’ to reduce this problem. These are:
    • Reduce: We should minimize the use of things that produce wastes.
    • Reuse: We can reuse many things which we usually throw after using once.
    • Recycle: We can recycle the things that we usually throw and make many useful things, e.g., paper can be recycled to make paper baskets, etc.

Question 3.
(a) What do you do with the leftover food at home?
Answer:
We give this food to animals and sometimes we throw it in the dustbin.

(b) If you and your friends are given the choice of eating on a plastic plate or a banana leaf platter at a party, which one would you prefer and why?
Answer:
We would prefer a banana leaf platter because it can be used to form compost.

Question 4.
1. Collect pieces of different kinds of paper. Find out which of these can be recycled.
2. With the help of a lens look at the pieces of paper you collected for the above question. Do you see any difference in the material of recycled paper and a new sheet of paper?
Answer:
1. We can collect the following kinds of paper:

  • Old newspapers,
  • Magazines,
  • Used envelopes,
  • Notebooks, and
  • Shiny plastic-coated paper.

We can recycle all kinds of paper except shiny plastic-coated paper.
2. Yes, the surface of recycled paper is rough while that of the new sheet of paper is smooth.

Question 5.

  1. Collect different kinds of packaging material. What was the purpose for which each one was used? Discuss in groups.
  2. Give an example in which packaging could have been reduced?
  3. Write a story on how packaging increases the amount of garbage.

Answer :

  1. Children should discuss this in class.
  2. If instead of making packets of sugar, salt, pulses, etc. we can buy them loose in our cloth bag or paper bag.
  3. Packaging increases the amount of garbage because after use we throw the packaging material. Most of the packaging material cannot be converted into compost etc. Hence we are increasing the amount of garbage.

Question 6.
Do you think it is better to use compost instead of chemical fertilizers? Why?
Answer :
Yes, it is better to use compost instead of chemical fertilisers because it helps us in two ways :

  • It helps us to get rid of wastes.
  • It helps us to save a lot of money that is spent on buying expensive chemical fertilisers.

We hope the NCERT Solutions for Class 6 Science Chapter 16 Garbage in, Garbage out help you. If you have any query regarding NCERT Solutions for Class 6 Science Chapter 16 Garbage in, Garbage out, drop a comment below and we will get back to you at the earliest.

NCERT Solutions for Class 6 Science Chapter 15 Air Around us

NCERT Solutions for Class 6 Science Chapter 15 Air Around us are part of NCERT Solutions for Class 6 Science. Here we have given NCERT Solutions for Class 6 Science Chapter 15 Air Around us.

Board CBSE
Textbook NCERT
Class Class 6
Subject Science
Chapter Chapter 15
Chapter Name Air Around us
Number of Questions Solved 9
Category NCERT Solutions

NCERT Solutions for Class 6 Science Chapter 15 Air Around us

NCERT TEXTBOOK EXERCISES
(Pages 153-154)

Question 1.
What is the composition of air?
Answer :
Air contains 99% nitrogen and oxygen. The remaining 1% is carbon dioxide and a few other gases, water vapour and dust particles.

Question 2.
Which gas in the atmosphere is essential for respiration?
Answer :
Oxygen gas helps in the breakdown of the food to provide energy. This process is called respiration. Thus, oxygen helps in respiration.

Question 3.
How will you prove that air supports burning?
Answer :
To show that oxygen supports burning, we have to perform an activity as given below. Fix a candle about 6-8 cm long in the center of a trough or a plate having a raised rim. Now fill the trough or a plate with water to more than half of its height. Light the candle. Next, take a one-liter plastic water bottle and with the help of a sharp knife remove its base. It will serve the purpose of a vessel. Tighten its cap. Then place it over the candle as shown in Fig. 15.5. Observe carefully what happens to the burning candle and the water level. Light the candle again and perform this experiment with a two-liter plastic water bottle. Next, make several holes all over the surface of a smaller plastic bottle with the help of a hot screwdriver or nail. And repeat the experiment with this water bottle.
NCERT Solutions for Class 6 Science Chapter 15 Air Around us 1
The candle flickers out after some time in the first two conditions. The candle burns for a shorter period in the smaller bottle. We kept the air limited in the first two conditions. However, in the third experimental condition (b), air was allowed to come and go through the vessel. The candle burns continuously in the bottle having holes. We also see that, if not covered in any closed space, a candle continues burning till it is completely finished. This reflects that burning cannot take place without a continuous supply of air. We can conclude that air is necessary for burning things.

In the first two conditions, there was a rise in water level, while no rising of water would have been observed in the third set up. This indicates that, during burning, some amount of air was used up. The component of air that supports burning is called oxygen.

Question 4.
How will you show that air is dissolved in water?
Answer :
We take some water in a beaker and heat it slowly on a tripod stand. We see that well before the water begins to boil, tiny bubbles of air are seen on the inside of the beaker. This shows that air is dissolved in water.
NCERT Solutions for Class 6 Science Chapter 15 Air Around us 2
Question 5.
Why does a lump of cotton wool shrink in the water?
Answer :
In a cotton lump, a large amount of air is trapped between thin and light cotton fibres making it fluffy. When these fluffy lumps come in contact with water they shrink because the fibres get weight after wetting and the air escapes out from it.

Question 6.
The layer of air around the earth is known as ………………………
Answer :
Atmosphere.

Question 7.
The component of air used by green plants to make their food is …………………………….
Answer :
Carbon dioxide.

Question 8.
List five activities that are possible due to the presence of air.
Answer :
Air is very important for living beings. Its various activities are listed below:

  1. It helps in burning.
  2. It is essential for respiration in living beings.
  3. It is helpful in the movements of sailing yachts, gliders, parachutes, and air crafts.
  4. Air current makes the windmill rotate. The windmill is used to draw water from tube wells and to run flour mills. Windmill also generates electricity.
  5. Birds, bats, and insects fly in the air.
  6. Air also helps in the dispersal of seeds and pollens of flowers of several plants.
  7. Compressed air is used in tyres in vehicles.
  8. Nitrogen present in the air is used on a large scale to manufacture fertilizers.
  9. Helps in winnowing.
  10. Helps in hearing sounds.
  11. CO2 present in air is used by plants in making food (photosynthesis).
  12. Activities like cloud formation, thundering, etc. occur in air.

Question 9.
How do plants and animals help each other in the exchange of gases in the atmosphere?
Answer :
Animals produce carbon dioxide during respiration and use oxygen whereas plants use carbon dioxide and produce oxygen during photosynthesis. In this way, plants and animals help each other in the exchange of gases in the atmosphere.

We hope the NCERT Solutions for Class 6 Science Chapter 15 Air Around us help you. If you have any query regarding NCERT Solutions for Class 6 Science Chapter 15 Air Around us, drop a comment below and we will get back to you at the earliest.

NCERT Solutions for Class 6 Maths Chapter 2 Whole Numbers Ex 2.1

NCERT Solutions for Class 6 Maths Chapter 2 Whole Numbers Ex 2.1 are part of NCERT Solutions for Class 6 Maths. Here we have given NCERT Solutions for Class 6 Maths Chapter 2 Whole Numbers Ex 2.1.

Board CBSE
Textbook NCERT
Class Class 6
Subject Maths
Chapter Chapter 2
Chapter Name Whole Numbers
Exercise  Ex 2.1
Number of Questions Solved 8
Category NCERT Solutions

NCERT Solutions for Class 6 Maths Chapter 2 Whole Numbers Ex 2.1

Question 1.
Write the next three natural numbers after 10999.
Solution :
The next three natural numbers after 10999 are 11000, 11001 and 11002.

Question 2.
Write the three whole numbers occurring just before 10001.
Solution :
The three whole numbers occurring just before 10001 are 10000, 9999 and 9998.

Question 3.
Which is the smallest whole number?
Solution :
0 is the smallest whole number.

Question 4.
How many whole numbers are there between 32 and 53?
Solution :
There are 20 whole numbers between 32 and 53.
These are 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,43, 44, 45, 46, 47,48, 49, 50, 51 and 52.

Question 5.
Write successor of:
(a) 2440701
(b) 100199
(c) 1099999
(d) 2345670
Solution :
(a) The successor of 2440701 is 24,40,702.
(b) The successor of 100199 is 1,00,200.
(c) The successor of 1099999 is 11,00,000.
(d) The successor of 2345670 is 23,45,671.

Question 6.
Write the predecessor of:
(a) 94
(b) 10000
(c) 208090
(d) 7654321.
Solution :
(a) The predecessor of 94 is 93.
(b) The predecessor of 10000 is 9,999.
(c) The predecessor of 208090 is 2,08,089.
(d) The predecessor of 7654321 is 76,54,320.

Question 7.
In each of the following pairs of numbers, the state which the whole number is on the left of the other number on the number line. Also write them with the appropriate sign (>, <) between them.
(a) 530, 503
(b) 370, 307
(c) 98765, 56789
(d) 9830415, 10023001.
Solution :
(a) The whole number 503 is on the left of the whole number 530 on the number line. So, 503 < 530.
(b) The whole number 307 is on the left of the whole number 370 on the number line. So, 307 < 370.
(c) The whole number 56789 is on the left of the whole number 98765 on the number line. So, 56789 < 98765. ;
(d) The whole number 9830415 is on the left of the whole number 10023001 on the number line. So, 98,30,415 < 100,23,001.

Question 8.
Which of the following statements are true (T) and which are false (F)?
(a) Zero is the smallest natural number.
(b) 400 is the predecessor of 399.
(c) Zero is the smallest whole number.
(d) 600 is the successor of 599.
(e) All natural numbers are whole numbers.
(f) All whole numbers are natural numbers,
(g) The predecessor of a two digit number is never a single digit number.
(h) 1 is the smallest whole number.
(i) The natural number 1 has no predecessor,
(j) The whole number 1 has no predecessor.
(k) The whole number 13 lies between 11 and 12.
(l) The whole number 0 has no predecessor.
(m) The successor of a two digit number is always a two digit number.
Solution :
(a) This statement is false (F).
(b) This statement is false (F).
(c) This statement is true (T).
(d) This statement is true (T).
(e) This statement is true (T).
(f) This statement is false (F).
(g) This statement is false (F).
(h) This statement is false (F).
(i) This statement is true (T).
(j) This statement is false (F).
(k) This statement is false (F).
(l) This statement is true (T).
(m) This statement is false (F).

 

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NCERT Solutions for Class 6 Science Chapter 13 Fun with Magnets

NCERT Solutions for Class 6 Science Chapter 13 Fun with Magnets are part of NCERT Solutions for Class 6 Science. Here we have given NCERT Solutions for Class 6 Science Chapter 13 Fun with Magnets.

Board CBSE
Textbook NCERT
Class Class 6
Subject Science
Chapter Chapter 13
Chapter Name Fun with Magnets
Number of Questions Solved 10
Category NCERT Solutions

NCERT Solutions for Class 6 Science Chapter 13 Fun with Magnets

NCERT TEXTBOOK EXERCISES
(Pages 134-135)

Question 1.
Fill up the blanks:
(a) Artificial magnets are made in different shapes such as ______, ______ and ______.
Answer:

  1. U-shaped
  2. Cylindrical
  3. Base shaped

(b) The materials which are attracted towards the magnet are called ______.
Answer:
Magnetic

(c) Paper is not a ______ material.
Answer:
Magnetic

(d) In the olden day’s sailors used to find direction by suspending a piece of ______.
Answer:
Magnet

(e) A magnet always has ______ poles.
Answer:
Two

Question 2.
State whether the following statements are True or False:
(i) A cylindrical magnet has only one pole.
(ii) Artificial magnets were discovered in Greece.
(iii) Similar poles of a magnet repel each other.
(iv) Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
(v) Bar magnets always point towards North-South direction.
(vi) A compass can be used to find East-West direction at any place.
(vii) Rubber is a magnetic material.
Answer :
(i) False
(ii) True
(iii) True
(iv) False
(v) True
(vi) False
(vii) False

Question 3.
It was observed that a pencil sharpener gets attracted by both the poles of a magnet although its body is made of plastic. Name a material that might have been used to make some part of it.
Answer :
Iron might have been used to make some part of a pencil sharpener.

Question 4.
Column I shows different positions in which one pole of a magnet is placed near that of the other. Column II indicates the resulting action between them for each situation. Fill in the blanks.

Column I Column II
N-N ………………
N-….. Attraction
S-N ……………….
…..-S Repulsion

Answer :

Position of two magnets Behavior
N-N Repulsion
N-S Attraction
S-N Attraction
S-S Repulsion

Question 5.
Write any two properties of a magnet.
Answer:
Properties of a magnet are:

  1. The magnet has two poles-north poles and a south pole.
  2. Same poles repel each other and different poles attract each other.

Question 6.
Where are the poles of a bar magnet located?
Answer :
Poles of a bar magnet are located at the ends.
When a bar magnet is placed near some iron filings, we observe more iron filings clinging to the magnet near its ends.
See Figs. 13.3 and 13.4(a).
NCERT Solutions for Class 6 Science Chapter 13 Fun with Magnets 1
NCERT Solutions for Class 6 Science Chapter 13 Fun with Magnets 2
The ends of a magnet where maximum iron filings get clung, i.e., the attraction is strongest, are known as poles.

Question 7.
A bar magnet has no markings to indicate its poles. How would you find out near which end is its north pole located?
Answer :
We will suspend the bar magnet. It will come to rest in a north-south direction. The end of the magnet pointing towards the north direction is called a north pole.

Question 8.
You are given an iron strip. How will you make it into a magnet?
Answer :
We can convert an iron strip by repeatedly stroking it by a bar magnet systematically. Take the iron strip and keep it on a wooden table. Stroke it with one pole of a bar magnet in one direction. When you reach the other end of the iron strip, lift the magnet and bring the same pole back to the starting end of the iron piece, stroke again, in the same direction. Repeat this process about 30-40 times. After that check the iron strip whether the iron strip has now become a magnet. If not, continue the process for some more time. Remember the pole of the magnet and the direction of stroking is not to be changed. In the same way, the iron needle can also be converted into a magnet.
NCERT Solutions for Class 6 Science Chapter 13 Fun with Magnets 3
Question 9.
How is a compass used to find directions?
Answer :
The compass is kept at the place where we want to know the directions. Its needle indicates the north-south direction when it comes to rest. The compass is then rotated until the north and south marked on the dial are at the two ends of the needle. Thus north and south directions are identified.

Question 10.
A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. The effect observed in each case is stated in Column I. Possible reasons for the observed effects are mentioned in Column II. Match the statements given in Column I with those in Column II,

Column I Column II
Boat gets attracted towards the magnet Boat is fitted with a magnet with north pole towards its head
Boat is not affected by the magnet Boat is fitted with a magnet with south pole towards its head
Boat moves towards the magnet if north pole of the magnet is brought near its head Boat has a small magnet fixed along its length
Boat moves away from the magnet when north pole is brought near its head Boat is made of magnetic material
Boat floats without changing its direction Boat is made up of non-magnetic material

Answer :

Column I Column II
Boat gets attracted towards the magnet Boat is made up of magnetic material
Boat is not affected by the magnet Boat is made up of non-magnetic material
Boat moves towards the magnet if north pole of the magnet is brought near its head Boat is fitted with a magnet with south pole towards its head
Boat moves away from the magnet when north pole is brought near its head Boat is fitted with a magnet with a north pole towards its head
Boat floats without changing its direction Boat has a small magnet fixed along its length

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NCERT Solutions for Class 6 Science Chapter 12 Electricity and Circuits

NCERT Solutions for Class 6 Science Chapter 12 Electricity and Circuits are part of NCERT Solutions for Class 6 Science. Here we have given NCERT Solutions for Class 6 Science Chapter 12 Electricity and Circuits.

Board CBSE
Textbook NCERT
Class Class 6
Subject Science
Chapter Chapter 12
Chapter Name Electricity and Circuits
Number of Questions Solved 10
Category NCERT Solutions

NCERT Solutions for Class 6 Science Chapter 12 Electricity and Circuits

NCERT TEXTBOOK EXERCISES
(Pages 123-124)

Question 1.
Fill up the blanks:

(a) A device that is used to break an electric circuit is called _______.
Answer:
switch

(b) An electric cell has _______ terminals.
Answer:
Two

Question 2.
Mark ‘True’ or ‘False’ for the following statements:
(a) Electric current can flow through metals.
(b) Instead of metal wires, a jute string can be used to make a circuit.
(c) Electric current can pass through a sheet of thermocol.
Answer :
(a) True
(b) False
(c) False.

Question 3.
Explain why the bulb would not glow in the arrangement shown in Fig. 12.7.
NCERT Solutions for Class 6 Science Chapter 12 Electricity and Circuits 1
Answer :
The bulb does not light up in the arrangement because the circuit is not complete.

Question 4.
Complete the drawing shown in Fig. 12.4 to indicate where the free ends of the two wires should be joined to make the bulb glow.
Answer :
NCERT Solutions for Class 6 Science Chapter 12 Electricity and Circuits 2
Question 5.
What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
Answer :
Electric switches are used to stop or start the flow of current. Electric gadgets having switches built into them are heaters, geysers, televisions, mixi, electric bells, fans, cooler, air conditioners, microwave ovens, etc.

Question 6.
Would the bulb glow after completing the circuit shown in Fig. 12.8, if instead of a safety pin we use an eraser?
Answer :
Yes, the bulb will light up after completing the circuit. No, the bulb will not glow if we use an eraser instead of safety pins.
NCERT Solutions for Class 6 Science Chapter 12 Electricity and Circuits 3
Question 7.
Would the bulb glow in the circuit shown in Fig 12.9?
NCERT Solutions for Class 6 Science Chapter 12 Electricity and Circuits 4
Answer :
In this circuit, the bulb is connected through a woolen thread with the negative terminal of the electrical cell. Since the woolen thread is not a conductor of electricity, it will not allow the electricity to flow through it that is from bulb to electrical cell. Thus the circuit remains incomplete and hence the bulb will not light up.

Question 8.
Using the “conduction tester” on an object it was found that the bulb begins to glow. Is that object a conductor or an insulator? Explain.
Answer :
The material of that object is a conductor as the bulb light up. It means that circuit is complete.

Question 9.
Why should an electrician use rubber gloves while repairing an electric switch at your home? Explain.
Answer :
While carrying out electrical repairs one must wear rubber gloves. This is because our body is a good conductor of electricity, and if there is any contact of naked wire with our naked hand it will be very dangerous. And if we are with rubber gloves on our hands, the rubber being an insulator will protect us from electric shock.

Question 10.
The handles of the tools like screwdrivers and pliers used by electricians for repair work usually have plastic or rubber covers on them. Can you explain, why?
Answer:
Wood or plastic are insulators and do not allow electricity to pass through them. Hence electricians must use screwdrivers, with wooden or plastic handles, when they carry out repairs to avoid electric shocks.

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NCERT Solutions for Class 6 Maths Chapter 1 Knowing Our Numbers Ex 1.1

NCERT Solutions for Class 6 Maths Chapter 1 Knowing Our Numbers Ex 1.1 are part of NCERT Solutions for Class 6 Maths. Here we have given NCERT Solutions for Class 6 Maths Chapter 1 Knowing Our Numbers Ex 1.1.

Board CBSE
Textbook NCERT
Class Class 6
Subject Maths
Chapter Chapter 1
Chapter Name Knowing Our Numbers
Exercise  Ex 1.1
Number of Questions Solved 4
Category NCERT Solutions

NCERT Solutions for Class 6 Maths Chapter 1 Knowing Our Numbers Ex 1.1

Question 1.
Fill in the blanks:
(a) 1 lakh = …………………. ten thousand.
(b) 1 million = …………………. hundred thousand.
(c) 1 crore = …………………. ten lakh.
(d) 1 crore = …………………. million.
(e) 1 million = …………………. lakh.
Solution :
(a) 1 lakh = ten ten thousand.
(b) 1 million = ten hundred thousand.
(c) 1 crore = ten ten lakh
(d) 1 crore = ten million
(e) 1 million = ten lakh

Question 2.
Place commas correctly and write the numerals :
(a) Seventy-three lakh seventy’ five thousand three hundred seven.
(b) Nine crore five lakh forty-one.
(c) Seven crores fifty-two lakh twenty-one thousand three hundred two.
(d) Fifty-eight million four hundred twenty-three thousand two hundred two.
(e) Twenty-three lakh thirty thousand ten.
Solution :
(a) 73,75,307
(b) 9.05.00.041
(c) 7,52.21,302
(d) 58.423.202
(e) 23.30,010.

Question 3.
Insert commas suitably and write the names according to Indian System of Numeration :
(a) 87595762
(b) 8546283
(c)99900046
(d) 98432701.
Solution :
(a) 8, 75, 95, 762. Eight crores seventy-five lakh ninety-five thousand seven hundred and sixty-two.
(b) 85, 46, 283. Eighty-five lakh forty-six thousand two hundred and eighty-three.
(c) i 9, 99, 00, 046. Nine crore ninety-nine lakh and forty-six.
(d) 9, 84, 32, 701. Nine crore eighty-four lakh thirty-two thousand seven hundred and one.

Question 4.
Insert commas suitably and write the names according to International System of Numeration :
(a) 78921092
(b) 7452283
(c) 99985102
(d) 48049831.
Solution :
(a) 78,921,092. Seventy-eight million nine hundred twenty-one thousand and ninety-two.
(b) 7.452,283. Seven million four hundred fifty-two thousand two hundred and eighty-three.
(c) 99. 985. 102. Ninety-nine million nine hundred eighty-five thousand one hundred and two.
(d) 48. 049. 831. Forty-eight million forty-nine thousand eight hundred and thirty-one.

 

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NCERT Solutions for Class 6 Science Chapter 11 Light, Shadows and Reflections

NCERT Solutions for Class 6 Science Chapter 11 Light, Shadows and Reflections are part of NCERT Solutions for Class 6 Science. Here we have given NCERT Solutions for Class 6 Science Chapter 11 Light, Shadows and Reflections.

Board CBSE
Textbook NCERT
Class Class 6
Subject Science
Chapter Chapter 11
Chapter Name Light, Shadows and Reflections
Number of Questions Solved 4
Category NCERT Solutions

NCERT Solutions for Class 6 Science Chapter 11 Light, Shadows and Reflections

NCERT TEXTBOOK EXERCISES
(Pages 113-114)

Question 1.
Rearrange the boxes given below to make a sentence that helps us understand opaque objects.
NCERT Solutions for Class 6 Science Chapter 11 Light, Shadows and Reflections 1
Answer :
NCERT Solutions for Class 6 Science Chapter 11 Light, Shadows and Reflections 2
Question 2.
Classify the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous:
Air, water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, a sheet of polythene, a CD, smoke, a sheet of plane glass, fog, a piece of red hot iron, an umbrella, a lighted fluorescent tube, a wall, a sheet of carbon paper, the flame of a gas burner, a sheet of cardboard, a lighted torch, a sheet of cellophane, a wire mesh, kerosene stove, sun, firefly, moon.
Answer :

  • Transparent objects: Air, water, a sheet of plane glass.
  • Translucent objects: A sheet of polythene, smoke, fog, a sheet of cellophane, a wire mesh.
  • Opaque objects: A piece of rock, a sheet of aluminium, a mirror, a wooden board, a CD, an umbrella, a wall, a sheet of carbon paper, a sheet of cardboard.
  • Luminous objects: A piece of red hot iron, a lighted fluorescent tube, the flame of a gas burner, a lighted torch, kerosene stove, sun, firefly.
  • Non-luminous objects: Include all
  • transparent objects,
  • translucent objects and
  • opaque objects and moon.

Question 3.
Can you think of creating a shape that would give a circular shadow if held in one way and a rectangular shadow if held in another way?
Answer :
Yes, there are many things which give a circular shadow if held in one way and a rectangular shadow if held in another way. For example, a cylinder, a circular disc, etc.
NCERT Solutions for Class 6 Science Chapter 11 Light, Shadows and Reflections 3
Question 4.
In a completely dark room, if you hold up a mirror in front of you, you see a reflection of yourself in the mirror?
Answer :
No, we will not see the image because there is no light.

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NCERT Solutions for Class 6 Science Chapter 10 Motion and Measurement of Distances

NCERT Solutions for Class 6 Science Chapter 10 Motion and Measurement of Distances are part of NCERT Solutions for Class 6 Science. Here we have given NCERT Solutions for Class 6 Science Chapter 10 Motion and Measurement of Distances.

Board CBSE
Textbook NCERT
Class Class 6
Subject Science
Chapter Chapter 10
Chapter Name Motion and Measurement of Distances
Number of Questions Solved 10
Category NCERT Solutions

NCERT Solutions for Class 6 Science Chapter 10 Motion and Measurement of Distances

NCERT TEXTBOOK EXERCISES
(Page 106)

Question 1.
Give two examples each, of modes of transport used on land, water, and air.
Answer :

  1. Land – Bus, car, bicycle.
  2. Water – Motor-boat, ship.
  3. Air – Aeroplane, Helicopter.

Question 2.
Fill in the blanks:

  1. One meter is ………………………………. cm.
  2. Five kilometers is ………………………………. m.
  3. The motion of a child on a swing is ………………………………..
  4. The motion of the needle of a sewing machine is ………………………………..
  5. The motion of the wheel of a bicycle is ………………………………..

Answer :

  1. 100
  2. 5000
  3. Periodic (oscillatory) motion
  4. Periodic motion
  5. Circular motion

Question 3.
Why can a pace or a footstep not be used as a standard unit of length?
Answer :
A pace or a footstep cannot be used as a standard unit of length because it is different for different persons. Hence correct measurement cannot be made.

Question 4.
Arrange the following lengths in their increasing magnitude: 1 meter, 1 centimeter, 1 kilometer, 1 millimeter.
Answer :
1 millimeter, 1 centimeter, 1 meter, 1 kilometer.

Question 5.
The height of a person is 1.65 m. Express it into cm and mm.
Answer:

(1) 1 m = 100 cm.
∴ 1.65 = 165 cm.

(2) 1 cm = 10 mm
∴ 165 cm = 1650 mm
Hence the height of a person is 165 cm or 1650 mm.

Question 6.
The distance between Radha’s home and her school is 3250 m. Express this distance into km.
Answer :
Given that,
Distance between Radha’s home and her school = 3250 m We have to find out distance in km.
We know that,
1000 m = 1 km
hence, 3250 m = \(\frac { 3250 }{ 1000 } \) km = 3.250 km.

Question 7.
While measuring the length of a knitting needle, the reading of the scale at one end is 3.0 cm and at the other end is 33.1 cm. What is the length of the needle?
Answer:
Length of the needle = Final reading – Initial reading
= 33. cm – 3.0 cm
= 30.1 cm.

Question 8.
Write the similarities and differences between the motion of a bicycle and a ceiling fan that has been switched on.
Answer :

  • Similarity: Both the wheels of a bicycle and a ceiling fan execute a circular motion on a fixed axis.
  • Dissimilarity: A bicycle also executes a rectilinear motion while a fan does not execute such motion.

Question 9.
Why would you not like to use a measuring tape made of an elastic material like rubber to measure distance? What would be some of the problems you would meet in telling someone about a distance you measured with such a tape?
Answer :
We could not use an elastic measuring tape to measure distance because elastic measuring tape cannot measure correct distance. Because if the elastic measuring tape is stretched more then the distance will be less and if it stretched less than the same distance would be more.
The problems we would meet in telling about the distance we measured with an elastic tape are that the distance would be incorrect and would be different every time measured.

Question 10.
Give two examples of periodic motion.
Answer :
Two examples of periodic motion are:

  • The motion of the earth around the sun.
  • Oscillations of a pendulum.

NCERT Solutions for Class 6 Science Chapter 10 Motion and Measurement of Distances 1

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NCERT Solutions for Class 6 Science Chapter 9 The Living Organisms and their Surroundings

NCERT Solutions for Class 6 Science Chapter 9 The Living Organisms and their Surroundings are part of NCERT Solutions for Class 6 Science. Here we have given NCERT Solutions for Class 6 Science Chapter 9 The Living Organisms and their Surroundings.

Board CBSE
Textbook NCERT
Class Class 6
Subject Science
Chapter Chapter 5
Chapter Name Golu Grows a Nose
Number of Questions Solved 8
Category NCERT Solutions

NCERT Solutions for Class 6 Science Chapter 9 The Living Organisms and their Surroundings

NCERT TEXTBOOK EXERCISES
(Page 93)

Question 1.
What is a habitat?
Answer :
The surroundings where plants and animals live are called their habitat.

Question 2.
How are cactus adapted to survive in a desert?
Answer :
The plants growing in deserts are adapted to prevent water loss for their survival, for example, cactus:

  • it has no leaves just to prevent water loss through transpiration.
  • the stem is modified in such a way that it performs photosynthesis.
  • the root system is well-developed and grows deep in search of water.

Question 3.
Fill up the blanks:
(a) The presence of specific features, which enable a plant or an animal to live in a particular habitat, is called _______.
Answer:
Adaptation

(b) The habitats of the plants and animals that live on land are called _______ habitat.
Answer:
Terrestrial

(c) The habitats of plants and animals that live in water are called _______ habitat.
Answer:
Aquatic

(d) Soil, water and air are the _______ factors of a habitat.
Answer:
Abiotic

(e) Changes in our surroundings that make us respond to them, are called _______.
Answer:
Stimuli

Question 4.
Which of the things in the following list are non-living? Plough, Mushroom, Sewing machine, Radio, Boat, Water hyacinth, Earthworm.
Answer :
In this list, plough, sewing machine, radio, and boat are non-living.

Question 5.
Give an example of a non-living thing, which shows any two characteristics of living things.
Answer :

  • Moving of bus or car – Movement is characteristic of living things.
  • Growing in the size of clouds – Growth is the characteristic of living things.

Question 6.
Which of the non-living things listed below, were once part of a living thing? Butter, Leather, Soil, Wool, Electric bulb, Cooking oil, Salt, Apple, Rubber
Answer :
Butter, Leather, Wool, Cooking oil, Apple and Rubber are the non-living things from the list which were once the part of a living thing.

Question 7.
List the common characteristics of living things.
Answer :
The common characteristics of living things are :

  1. They all need food.
  2. They all show growth.
  3. They all respire.
  4. They all respond to stimuli.
  5. They all reproduce their own kind.
  6. They all move.

Question 8.
Explain why speed is important for survival in the grasslands for animals that live there.
(Hint: There are few trees or places for animals to hide in grassland habitats.)
Answer :
The speed of animals in the grasslands helps them to run away from predators.

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