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Question
Circle the odd one.
Options
Boiling
Burning
Cooking
Rusting of iron
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Solution
Boiling
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RELATED QUESTIONS
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 |
Short Answer Type Question:
What is a chemical change? Explain with example.
When a candle is lit the following changes are observed.
- Wax melts.
- Candle keeps burning.
- The size of the candle decreases.
- The molten wax solidifies
- Which of the changes can be reversed? Justify your answer
Differentiate reversible and irreversible reactions.
Give examples to explain the difference between changes that can or cannot be reversed.
Changes which cannot be reversed are called ______.
Give one example of change which occurs on heating but can be reversed.
Give one example of change occurs on mixing two substances, but can be reversed.
Give one example of change which occurs on mixing two substances, but cannot be reversed.
