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Question
Pick the change that can be reversed from the following.
Options
Cutting of trees
Melting of ghee
Burning of candle
Blooming of flower
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Solution
Melting of ghee
Explanation:
The melted ghee can be frozen again hence this change can be reversed. Cutting of trees, burning of candle and blooming of flower cannot be reversed.
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RELATED QUESTIONS
Very Short Answer Type Question:
Give two examples of irreversible 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.
| Bud to flower | Dr. A.P.J. Abdul Kalam |
| Reversible change | Recyclable waste |
| India 2020 | Organic waste |
| Paper | Melting of ice |
| Vegetables | Irreversible change |
What is reversible change?
Drying of wet clothes in air is an example of
Water on ______ changes to ice and on ______ comes back to water.
What are irreversible changes?
Can we reverse the following change? If yes, suggest the name of the method.
Water vapour into water
Give one example of change which occurs on cooling but can be reversed.
Choose the odd one out. Give a reason for your choice.
