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प्रश्न
Digestion of food is a physical change.
पर्याय
True
False
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उत्तर
Digestion of food is a physical change- False.
Correct statement
Digestion of food is a chemical change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Cutting of trees
Tick the most appropriate answer.
3. Physical changes are
- permanent.
- periodic,
- temporary
- irreversible.
Classify the following changes as physical or chemical:-boiling
State whether the following is physical or chemical changes.
growing of a piglet into a pig —
Which of the following are physical changes and which are chemical changes ?
Glowing of an electric bulb
State the observations seen, when milk in a dish is kept aside for a few hours or more. Is the change which occurs – a physical change or a chemical change. Give reasons.
Match the examples of changes in List I with the correct.
| List I | List II |
| 1. Expansion of a steel rod on heating | A: Physical change |
| 2. Rotting of eggs | B: Chemical change |
| 3. Milk turning sour | |
| 4. Tarnishing of copper | |
| 5. Separation of naphthalene from a mixture of naphthalene and sodium chloride. |
Change is the law of nature which occurs in everyday life.
State when a substance [i.e. matter] undergoes a kind of change.
Analogy:
Melting of ice: Physical change.
Popping of popcorn: ______.
Which of the following is not a physical change?
