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प्रश्न
Conversion of ice into water and water into ice is an example of change which can be reversed. Give four more examples where you can say that the changes can be reversed.
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उत्तर
Examples of reversible changes.
- Melting of wax
- Folding of a paper
- Inflating a tyre or balloon
- Knitting of a sweater
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संबंधित प्रश्न
Very Short Answer Type Question:
Can you say deforestation is an irreversible or reversible change?
Long Answer Type Question:
How does curd being set? Is this change reversible?
What are reversible changes?
Which of the following change cannot be reversed?
While lighting a candle, Paheli observed the following changes.
- Wax was melting
- Candle was burning
- Size of the candle was reducing
- Melted wax was getting solidified.
Of the above, the changes that can be reversed are
Can we reverse the following change? If yes, suggest the name of the method.
Ice into water
Which of the following changes cannot be reversed?
- Blowing of a balloon
- Folding paper to make a toy aeroplane
- Rolling a ball of dough to make roti
- Baking cake in an oven
- Drying a wet cloth
- Making biogas from cow dung
- Burning of a candle
Give one example of change which occurs on heating but cannot be reversed.
Circle the odd one out. Give reason for your choice.
Choose the odd one out. Give a reason for your choice.
