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प्रश्न
Given reason:
Cutting of a cloth piece is a physical change, though it cannot be reversed.
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उत्तर
Because it does not change chemical composition of cloth and the change is only in the state, size, shape, colour, texture or the smell of some or all of the substances that undergo physical change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Cutting of trees
Classify the following as chemical or physical change:
Burning of paper and wood
Tick the most appropriate answer.
3. Physical changes are
- permanent.
- periodic,
- temporary
- irreversible.
Write short answer.
Sublimation is classified as a physical change. Why ?
Define physical change. Give two examples for the above changes.
Write true or false
Rusting of iron is a chemical change.
Tick (√) the correct alternative from the choice given for the following statement
Which one of the following is volatile in nature ?
Fill in the blank
Changes that occur in nature are called ______
Name the following.
A form of energy required for a chemical change.
A physical change is generally____________.
