Which of the following are chemical changes?
- Growth of a plant.
- Rusting of iron.
- Mixing of iron filings and sand.
- Cooking of food.
- Digestion of food.
- Freezing of water.
- Burning of a candle.
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Following are Chemical changes.
- Growth of a plant.
- Rusting of iron.
- Cooking of food.
- Digestion of food.
- Burning of a candle.
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