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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
Write true or false for the statement.
Burning of paper and formation of curd are reversible changes
State four differences between physical and chemical changes.
True or false
In a physical change no net energy change is involved.
Fill in the blank
Changes that occur in nature are called ______
Classify the following as a physical or a chemical change.
Boiling of water
Name the following:
The type of change physical or chemical involved – ‘when a substance undergoes a change in state, colour or size’.
Select the chemical changes from the following list of changes
Change of seasons
Name the following.
A form of energy required for a chemical change.
Which of the following is not a physical change?
Iron pipes coated with zinc do not get rusted easily.
