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प्रश्न
What is reversible change?
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उत्तर
Changes which can be reversed are called reversible change.
Eg: melting of ice.
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संबंधित प्रश्न
Very Short Answer Type Question:
Can you say deforestation is an irreversible or reversible change?
Circle the odd one.
Evaporation of water is a reversible change.
Analogy:
Irreversible change: Making idly front batter.
Reversible change: ______.
Paheli had bought a new bottle of pickle from the market. She tried to open the metal cap to taste it but could not do so. She then took a bowl of hot water and immersed the upper end of the bottle in it for five minutes. She could easily open the bottle now. Can you give the reason for this?
Give one example of change which occurs on heating but can be reversed.
Paheli mixed flour and water and
- made a dough,
- rolled the dough to make a chapati,
- baked the chapati on a pan,
- dried the chapati and ground it in a grinder to make powder.
Identify the changes (i) to (iv) as the changes that can be reversed or that cannot be reversed.
Choose the odd one out. Give reason for your choice.
Choose the odd one out. Give reason for your choice.
Choose the odd one out. Give reason for your choice.
