Question

EXERCISE
A. Multiple Choice Questions.
1. Melting of ice is :
(a) a periodic change
(b) a chemical change
(c) an irreversible change
(d) None of these
2. Cooking of food involves :
Ka) a physical change
(b) a chemical reaction
(c) formation of no new substance
(d) All of these
3. Bursting of a balloon is a:
(a) physical change, as no new substance is formed
(b) chemical change, as it is irreversible
(c) desirable change, as it releases gas
(d) periodic change
4. Pick the change that can be reversed from the following:
(a) Cutting of trees
(b) Melting of ghee
(c) Burning of candle
(d) Blooming of flowers​

Answer 1

Answer:

a) none of these

b) all of these

c) physical change, as no new substance is formed

d) Melting of ghee

Answer 2

Answer:

1. d

2. b

3. a

4. d

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