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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
Write true or false for the statement
Decomposition of leaves is a fast change.
Fill in the blank
Revolution of the earth around the sun is a ________ change.
Write true or false
Burning of sugar is a temporary change.
Write true or false
Dissolving of solute in a solvent and rusting of iron are both physical changes.
Classify the following as a physical or a chemical change.
Butter getting rancid
State whether the following statement is true or false. If false write the correct statement.
Melting of butter and wax are examples of chemical changes.
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
The occurrence of lightning.
Select the correct answer from the choice given below to complete the sentence
The dissolution of lead nitrate in water is deemed as a _________ change.
