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प्रश्न
An example for reversible change is
पर्याय
melting of ice
burst of balloon
burning paper
change of milk into curd
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उत्तर
Melting of ice
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संबंधित प्रश्न
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 physical change? Explain with example.
Circle the odd one.
Dissolving sugar in water is a ______ change.
When ‘Touch me not’ plant is touched by us, ______ changes occur.
Analogy:
Irreversible change: Making idly front batter.
Reversible change: ______.
The blackening of the Silver anklet is a (an) ______.
Look at the figure which shows three situations.
Which of these shows a reversible change and why?
Boojho’s sister broke a white dove, a symbol of peace, made of Plaster of Paris (POP). Boojho tried to reconstruct the toy by making a powder of the broken pieces and then making a paste by mixing water. Will he be successful in his effort? Justify your answer.
Change of a bud into a flower is a change which cannot be reversed. Give four more such example.
