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प्रश्न
State whether the following is physical or chemical changes.
growing of a piglet into a pig —
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उत्तर
chemical change,
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संबंधित प्रश्न
Dissolving salt in water is a reversible change.
Write short answer.
Sublimation is classified as a physical change. Why ?
State four differences between physical and chemical changes.
Write true or false
Earthquake is a desirable change.
A physical change is temporary. Explain.
Classify the following as a physical or a chemical change.
Burning of paper
Given reason:
Burning of paper is a chemical change.
Name the following:
The final product of the physical change involved during the ‘melting of a piece of wax’.
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.
