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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:
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 |
Short Answer Type Question:
What is a chemical change? Explain with example.
A stretched rubber band comes back to normal shape. It is an example for ________.
Analogy
Curdling of milk : irreversible change :: Formation of clouds : ________change
Periodical removal of one of the products of a reversible reaction increases the yield.
To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
Tearing of paper is said to be a change that cannot be reversed. What about paper recycling?
Circle the odd one out. Give a reason for your choice.
Select the odd one out. Give reason for your the choice
Choose the odd one out. Give reason for your choice.
