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

एका वाक्यात उत्तर

An iron rod’s heating is a reversible process.

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पाठ 6: Changes Around Us - Long Answer Questions [पृष्ठ ३५]

पाठ 6 Changes Around Us
Long Answer Questions | Q 15. (a) | पृष्ठ ३५

Very Short Answer Type Question:
Give two examples of reversible changes.

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

Match the following.

Circle the odd one.

Give examples to explain the difference between changes that can or cannot be reversed.

Which is reversible change?

When ‘Touch me not’ plant is touched by us, ______ changes occur.

Look at the figure which shows three situations.

Which of these shows a reversible change and why?

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

Find the odd one out and give reason for your choice.