Which of the following are chemical changes?
(a) Growth of a plant
(b) Rusting of iron
(c) Mixing of iron filings and sand
(d) Cooking of food
(e) Digestion of food
(1) Freezing of water
Burning of a candle.
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a,,d,b,e,g
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Answer:
Growth of a plant , rusting of iron, cooking of food , burning of candle are chemical change
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