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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.
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
Long Answer Type Question:
Explain how a metal rim slightly smaller than a wooden wheel can be fixed on it.
Match the following.
| Bud to flower | Dr. A.P.J. Abdul Kalam |
| Reversible change | Recyclable waste |
| India 2020 | Organic waste |
| Paper | Melting of ice |
| Vegetables | Irreversible change |
Circle the odd one.
Analogy
Curdling of milk : irreversible change :: Formation of clouds : ________change
Differentiate reversible and irreversible reactions.
Water on ______ changes to ice and on ______ comes back to water.
Touch me not plant: ______:: digestion of food: Irreversible change.
Change of a bud into a flower is a change which cannot be reversed. Give four more such example.
Circle the odd one out. Give reason for your choice.
Choose the odd one out. Give reason for your choice.
