Question

Which of the following are chemical changes (a) Growth of plant (b) Rusting of iron (c) Mixing of iron filings and sand (d) Cooking of food (e) Digestion of food (f) Freezing of water (g) Burning of a candle
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Answer 1

Answer:

(a) Growth of plant

(b) Rusting of iron

(d) Cooking of food

(e) Digestion of food

these are the chemical changes

Answer 2

Answer:

C. mixing of iron fillings and sand

F. freezing of water

G. burning of a candle

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