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प्रश्न
Classify the following processes into physical or chemical changes:
(i) Beating of aluminium metal to make aluminium foil.
(ii) Digestion of food.
(iii) Cutting of a log of wood into pieces.
(iv) Burning of crackers.
उत्तर
(i) Beating of aluminium metal to make aluminium foil: physical change
(ii) Digestion of food: chemical change
(iii) Cutting of log of wood into pieces: physical change
(iv) Burning of crackers: chemical change
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