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

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

एक पंक्ति में उत्तर

Mixing of cement and water is an irreversible change.

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

अध्याय 6 Changes Around Us
Long Answer Questions | Q 15. (e) | पृष्ठ ३५

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

Circle the odd one.

Drying of wet clothes in air is an example of

Water on ______ changes to ice and on ______ comes back to water.

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

Which of the following change cannot be reversed?

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

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

Circle the odd one out. Give a reason for your choice.