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प्रश्न
Choose the odd one out. Give reason for your choice.
Inflating a balloon, popping a balloon, fading of wall paint, burning of kerosene
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उत्तर
Inflating a balloon
Reason:
Inflating a balloon is a reversible change. The other three are irreversible changes.
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संबंधित प्रश्न
Short Answer Type Question:
What is a physical change? Explain with example.
Short Answer Type Question:
What happens when sugar is heated?
Drying of wet clothes in air is an example of
To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
Dissolving sugar in water is a ______ change.
Rolling of chapati and baking of chapati are the changes that ______.
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.
Give one example of change which occurs on mixing two substances, but cannot 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.
