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प्रश्न
A drawing sheet changes when you draw a picture on it. Can you reverse this change?
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उत्तर
If we draw a picture on a drawing sheet with a pencil, we can get back the original drawing sheet by erasing the drawing with an eraser. In this case, the change can be reversed.
However, if we draw with a pen, then the original drawing sheet cannot be obtained back because we cannot erase ink. Hence, in this case, the change cannot be reversed.
संबंधित प्रश्न
Circle the odd one.
Circle the odd one.
Burning of match stick is a reversible change.
Analogy:
Irreversible change: Making idly front batter.
Reversible change: ______.
The blackening of the Silver anklet is a (an) ______.
Rolling of chapati and baking of chapati are the changes that ______.
Can we reverse the following change? If yes, suggest the name of the method.
Ice into water
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.
Circle the odd one out. Give a reason for your choice.
