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प्रश्न
A stretched rubber band comes back to normal shape. It is an example for ________.
उत्तर
A stretched rubber band comes back to normal shape. It is an example for Reversible changes.
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संबंधित प्रश्न
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 |
Short Answer Type Question:
What is a chemical change? Explain with example.
Short Answer Type Question:
What happens when sugar is heated?
Circle the odd one.
Differentiate reversible and irreversible changes.
Analogy
Dissolution of glucose : reversible change :: Digestion of food: ___________ change
Periodical removal of one of the products of a reversible reaction increases the yield.
Change is the ______ of a substance from one form to another.
Water on ______ changes to ice and on ______ comes back to water.
