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प्रश्न
Rolling of chapati and baking of chapati are the changes that
विकल्प
can be reversed
cannot be reversed
can be reversed and cannot be reversed, respectively
cannot be reversed and can be reversed, respectively.
उत्तर
can be reversed and cannot be reversed, respectively
Explanation -
Rolling of chapati is a physical reversible change because there is no change in the properties of kneaded flour. Once the chapati is baked it cannot be reversed.
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संबंधित प्रश्न
Very Short Answer Type Question:
Can you say deforestation is an irreversible or reversible change?
Short Answer Type Question:
What is a physical change? Explain with example.
Evaporation of water is a reversible change.
Rusting of iron is a reversible change.
Give one example of change which occurs on cooling but can be reversed.
A potter working on his wheel shaped a lump of clay into a pot. He then baked the pot in an oven. Do these two acts lead to the same kind of changes or different? Give your opinion and justify your answer.
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.
Change of a bud into a flower is a change which cannot be reversed. Give four more such example.
Choose the odd one out. Give a reason for your choice.
Find the odd one out. Give reason for your choice.
