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प्रश्न
What kind of change is shown by tearing of paper?
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उत्तर
Tearing of paper is a physical change that cannot be reversed.
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संबंधित प्रश्न
Explain the following giving an example.
Pure substance
When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.
Classify the following changes as physical or chemical: curdling of milk
State whether the following is physical or chemical change.
Digestion of food —
Write true or false
Burning of paper and formation of curd are reversible changes.
Write true or false
Decomposition of leaves is a fast change.
Classify the following as a physical or a chemical change.
Burning of paper
Name the following:
The type of change physical or chemical involved – ‘when a substance undergoes a change in state, colour or size’.
Higher order Thinking question
Boiling of water is a physical change; but boiling of egg is a chemical change. Why?
Assertion: The explosion of fire cracker is a physical change.
Reason: A physical change is a reversible change.
