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प्रश्न
You are given some candle wax. Can you make a candle doll from it? What kind of change is this?
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उत्तर
Yes, I can. It is a physical (reversible) change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
Tick the most appropriate answer.
3. Physical changes are
- permanent.
- periodic,
- temporary
- irreversible.
Write short answer.
Give two examples of periodic changes
How do you say that the process of digestion is a chemical change ?
Write true or false
Earthquake is a desirable change.
Tick the most appropriate answer.
Rising and setting of the sun at a given place is a
Write true or false
Burning of paper and formation of curd are reversible changes.
Given reason:
Cutting of a cloth piece is a physical change, though it cannot be reversed.
Give a reason why
Freezing of water is a reversible change while burning of a candle – an irreversible change.
Select the chemical changes from the following list of changes
Boiling of milk.
