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

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

One Line Answer

Baking chapati is an irreversible change.

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Chapter 6: Changes Around Us - Long Answer Questions [Page 35]

Chapter 6 Changes Around Us
Long Answer Questions | Q 15. (b) | Page 35

Very Short Answer Type Question:
Some common changes are given in the below Table. Which of these changes do you think can be reversed?

Change	Can be reversed
(i) Raw egg to boiled egg	Yes/No
(ii) Batter to idli
(iii) Wet clothes to dirty clothes
(iv) Woollen yarn to knitted sweater
(v) Grain to its flour
(vi) Cold milk to hot milk
(vii) straight string to a cold string
(viii) Bud to flower
(ix) Milk to paneer
(x) Cow dung to biogas
(xi) stretched rubber band to its normal size
(xii) Melting of ice-cream

Long Answer Type Question:
Explain how a metal rim slightly smaller than a wooden wheel can be fixed on it.

Chemical reactions are example for

Pick the change that can be reversed from the following.

Which of the following change cannot be reversed?

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

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

Water vapour into water

Which of the following changes cannot be reversed?

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

Find the odd one out. Give reason for your choice.