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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
Classify the following as chemical or physical change:
Burning of paper and wood
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Cutting a log of wood into pieces is a chemical change.
Tick the most appropriate answer.
3. Physical changes are
- permanent.
- periodic,
- temporary
- irreversible.
State whether the following is physical or chemical changes.
water cycle in nature —
What are man-made changes ?
Classify the following changes as physical or chemical.
Classify the following as physical or chemical changes :
- Cooking of food
- Boiling of water
- Cutting of trees
- D0issolving salt in water
- Digestion of food
- Melting of ice
State what is meant by the term – interconversion of matter. Is interconversion of matter a physical change or a chemical change.
What is the difference between dissolution of sugar and burning of sugar ?
Iron pipes coated with zinc do not get rusted easily.
