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प्रश्न
Tearing of paper is said to be a change that cannot be reversed. What about paper recycling?
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उत्तर
Recycling of paper cannot be classified as a reversible change because the quality, colour and texture of the paper changes on recycling and we get a different type of paper not the original one.
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संबंधित प्रश्न
Long Answer Type Question:
How does curd being set? Is this change reversible?
Circle the odd one.
What is reversible change?
Choose the odd one out. Give reason for your choice.
Inflating a balloon, popping a balloon, fading of wall paint, burning of kerosene
Analogy:
Irreversible change: Making idly front batter.
Reversible change: ______.
Pick the change that can be reversed from the following.
Salt can be separated from its solution (salt dissolved in water), because ______.
Can we reverse the following change? If yes, suggest the name of the method.
Water vapour into water
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
Circle the odd one out. Give a reason for your choice.
