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प्रश्न
Change of a bud into a flower is a change which cannot be reversed. Give four more such example.
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उत्तर
Examples of irreversible changes.
- Milk into curd
- Burning of wood
- Ripening of fruits
- Digestion of food
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संबंधित प्रश्न
When a candle is lit the following changes are observed.
- Wax melts.
- Candle keeps burning.
- The size of the candle decreases.
- The molten wax solidifies
- Which of the changes can be reversed? Justify your answer
Periodical removal of one of the products of a reversible reaction increases the yield.
To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
Water changes into ice on cooling is an example of ______.
Rusting of iron is a reversible change.
Name the two types of changes.
What are irreversible changes?
Can we reverse the following change? If yes, suggest the name of the method.
Water into water vapour
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 mixing two substances, but cannot be reversed.
