Question

Q-7= Which of the followings are chemical change???

A). Growth of a plant.
B). Rusting of iron.
C). Mixing of iron filings and sand.
D). Cooking of food.
E). Digestion of food.
F). Freezing of water.

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Answer 1

Answer:

a,b,d,e

Explanation:

growth,rusting,cooking,digestion are chemical changes

mixing of iron and sand, freezing of water

are physical changes

Answer 2

Explanation:

rusting if iron

cooking if food

digestion of food

the above answer is the example of chemical change