Question

(c
(c) burning of a candle
(d) moving of a wheel
3. Which of the following is a chemical change?
(a) breaking of a brick (b) evaporation of a liquid
4. Chemical changes are
(a) always irreversible (b) always reversible
5. In a physical change
2.
(c) mostly irreversible
(d) mostly reversible​

Answer 1

Answer:

3. a

4. a

Explanation:

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Answer 2

Answer:

3.b

4.a

5.d

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