NCERT solutions for Science Exemplar Class 6 chapter 6 - Changes Around Us [Latest edition]

Chapters

Chapter 1: Food: Where Does It Come From?

Chapter 2: Components of Food

Chapter 3: Fibre to Fabric

Chapter 4: Sorting Materials and Groups

Chapter 5: Separation of Substances

Chapter 6: Changes Around Us

Chapter 7: Getting to Know Plants

Chapter 8: Body Movement

Chapter 9: The Living Organisms and their Surroundings

Chapter 10: Motion and Measurement of Distances

Chapter 11: Light

Chapter 12: Electricity and Circuits

Chapter 13: Fun with Magnets

Chapter 14: Water

Chapter 15: Air Around Us

Chapter 16: Garbage in, Garbage out

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Chapter 6: Changes Around Us

Multiple Choice QuestionsVery Short Answer QuestionsShort Answer QuestionsLong Answer Questions

Multiple Choice Questions [Pages 32 - 33]

NCERT solutions for Science Exemplar Class 6 Chapter 6 Changes Around Us Multiple Choice Questions [Pages 32 - 33]

Multiple Choice Questions | Q 1. | Page 32

Pick the change that can be reversed from the following.

Cutting of trees
Melting of ghee
Burning of candle
Blooming of flower

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Multiple Choice Questions | Q 2. | Page 32

Which of the following change cannot be reversed?

Hardening of cement
Freezing of ice cream
Opening a door
Melting of chocolate

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Multiple Choice Questions | Q 3. | Page 32

An iron ring is heated. Which of the following statement about it is incorrect?

The ring expands.
The ring almost comes to the same size on cooling.
The change in this case is reversed.
The ring changes its shape and the change cannot be reversed.

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Multiple Choice Questions | Q 4. | Page 32

While lighting a candle, Paheli observed the following changes.

Wax was melting
Candle was burning
Size of the candle was reducing
Melted wax was getting solidified. of the above, the changes that can be reversed are

(i) and (ii)
(ii) and (iii)
(iii) and (iv)
(i) and (iv)

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Multiple Choice Questions | Q 5. | Page 33

Salt can be separated from its solution (salt dissolved in water), because

mixing of salt in water is a change that can be reversed by heating and melting of salt
mixing of salt in water is a change that cannot be reversed
mixing of salt in water is a permanent change
mixing of salt in water is a change that can be reversed by evaporation.

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Multiple Choice Questions | Q 6. | Page 33

Rolling of chapati and baking of chapati are the changes that

can be reversed
cannot be reversed
can be reversed and cannot be reversed, respectively
cannot be reversed and can be reversed, respectively.

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Multiple Choice Questions | Q 7. | Page 33

Iron rim is made slightly smaller than the wooden wheel. The rim is usually heated before fixing into the wooden wheel, because on heating the iron rim

expands and fits onto the wooden wheel
contracts and fits onto the wooden wheel
contracts and fits onto the wooden wheel
expands first, then on cooling contracts and fits onto the wooden wheel.

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Very Short Answer Questions [Page 34]

NCERT solutions for Science Exemplar Class 6 Chapter 6 Changes Around Us Very Short Answer Questions [Page 34]

Very Short Answer Questions | Q 8. | Page 34

Look at Figure which shows three situations.

Which of these shows a reversible change and why?

A burning candle
An extinguished candle
Melting wax

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Very Short Answer Questions | Q 9. | Page 34

A piece of iron is heated till it becomes red-hot. it then becomes soft and is beaten to a desired shape. What kind of changes are observed in this process-reversible or irreversible?

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Very Short Answer Questions | Q 10. | Page 34

Paheli had bought a new bottle of pickle from the market. She tried to open the metal cap to taste it but could not do so. She then took a bowl of hot water and immersed the upper end of the bottle in it for five minutes. She could easily open the bottle now. Can you give the reason for this?

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Short Answer Questions [Pages 34 - 35]

NCERT solutions for Science Exemplar Class 6 Chapter 6 Changes Around Us Short Answer Questions [Pages 34 - 35]

Short Answer Questions | Q 11. (a) | Page 34

Can we reverse the following change? If yes, suggest the name of the method.

Water into water vapour

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Short Answer Questions | Q 11. (b) | Page 34

Can we reverse the following change? If yes, suggest the name of the method.

Water vapour into water

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Short Answer Questions | Q 11. (c) | Page 34

Can we reverse the following change? If yes, suggest the name of the method.

Ice into water

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Short Answer Questions | Q 11. (d) | Page 34

Can we reverse the following change? If yes, suggest the name of the method.

Curd into milk

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Short Answer Questions | Q 12. | Page 35

Which of the following changes cannot be reversed?

Blowing of a balloon
Folding paper to make a toy aeroplane
Rolling a ball of dough to make roti
Baking cake in an oven
Drying a wet cloth
Making biogas from cow dung
Burning of a candle

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Short Answer Questions | Q 13. | Page 35

Boojho’s sister broke a white dove, a symbol of peace, made of Plaster of Paris (POP). Boojho tried to reconstruct the toy by making a powder of the broken pieces and then making a paste by mixing water. Will he be successful in his effort? Justify your answer.

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Short Answer Questions | Q 14. | Page 35

Tearing of paper is said to be a change that cannot be reversed. What about paper recycling?

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Long Answer Questions [Pages 35 - 36]

NCERT solutions for Science Exemplar Class 6 Chapter 6 Changes Around Us Long Answer Questions [Pages 35 - 36]

Long Answer Questions | Q 15. (a) | Page 35

Give one example of change which occurs on heating but can be reversed.

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Long Answer Questions | Q 15. (b) | Page 35

Give one example of change which occurs on heating but cannot be reversed.

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Long Answer Questions | Q 15. (c) | Page 35

Give one example of change which occurs on cooling but can be reversed.

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Long Answer Questions | Q 15. (d) | Page 35

Give one example of change occurs on mixing two substances, but can be reversed.

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Long Answer Questions | Q 15. (e) | Page 35

Give one example of change which occurs on mixing two substances, but cannot be reversed.

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Long Answer Questions | Q 16. | Page 36

A potter working on his wheel shaped a lump of clay into a pot. He then baked the pot in an oven. Do these two acts lead to the same kind of changes or different? Give your opinion and justify your answer.

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Long Answer Questions | Q 17. | Page 36

Conversion of ice into water and water into ice is an example of change which can be reversed. Give four more examples where you can say that the changes can be reversed.

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Long Answer Questions | Q 18. | Page 36

Change of a bud into a flower is a change which cannot be reversed. Give four more such example.

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Long Answer Questions | Q 19. | Page 36

Paheli mixed flour and water and

made a dough,
rolled the dough to make a chapati,
baked the chapati on a pan,
dried the chapati and ground it in a grinder to make powder.

Identify the changes (i) to (iv) as the changes that can be reversed or that cannot be reversed.

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Long Answer Questions | Q 20. | Page 36

lt was Paheli’s birthday, her brother Simba was helping her to decorate the house for the birthday party and their parents were also busy making other arrangements. Following were the activities going on at Paheli’s home:

Simba blew balloons and put them on the wall.
Some of the balloons got burst.
Paheli cut colourful strips of paper and put them on the wall with the help of tape.
She also made some flowers by origami (paper folding) to decorate the house.
Her father made dough balls.
Mother rolled the dough balls to make puries.
Mother heated oil in a pan.
Father fried the puries in hot oil.

Identify the activities at Paheli’s home as those that can be reversed and those which cannot be reversed.

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Chapter 6: Changes Around Us

Multiple Choice QuestionsVery Short Answer QuestionsShort Answer QuestionsLong Answer Questions

NCERT solutions for Science Exemplar Class 6 chapter 6 - Changes Around Us

NCERT solutions for Science Exemplar Class 6 chapter 6 (Changes Around Us) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CBSE Science Exemplar Class 6 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Science Exemplar Class 6 chapter 6 Changes Around Us are Change, Classification of Change: Reversible and Irreversible Changes, Classification of Change: Desirable and Undesirable Changes, Classification of Change: Natural and Man-made Changes, Classification of Change: Periodic and Non-periodic Changes, Classification of Change: Slow and Fast Changes, Classification of Change: Physical Changes, Classification of Change: Chemical Changes, Effect of Heat on Solid, Liquid and Gases.

Using NCERT Class 6 solutions Changes Around Us exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in NCERT Solutions are important questions that can be asked in the final exam. Maximum students of CBSE Class 6 prefer NCERT Textbook Solutions to score more in exam.

Get the free view of chapter 6 Changes Around Us Class 6 extra questions for Science Exemplar Class 6 and can use Shaalaa.com to keep it handy for your exam preparation

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NCERT solutions for Science Exemplar Class 6 chapter 6 - Changes Around Us [Latest edition]

Chapters

Chapter 6: Changes Around Us

NCERT solutions for Science Exemplar Class 6 Chapter 6 Changes Around Us Multiple Choice Questions [Pages 32 - 33]

NCERT solutions for Science Exemplar Class 6 Chapter 6 Changes Around Us Very Short Answer Questions [Page 34]

NCERT solutions for Science Exemplar Class 6 Chapter 6 Changes Around Us Short Answer Questions [Pages 34 - 35]

NCERT solutions for Science Exemplar Class 6 Chapter 6 Changes Around Us Long Answer Questions [Pages 35 - 36]

Chapter 6: Changes Around Us

NCERT solutions for Science Exemplar Class 6 chapter 6 - Changes Around Us

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