Question

C. Tick (✓) the most appropriate answer:
1. Bursting of crackers is a
(a) reversible change
(b) irreversible change
(c) physical change
(d) none of the above
2. On heating, metals usually
(a) expand
(b) contract
(c) both (a) and (b)
(d) none of the above
3. On heating, the solubility of a substance
(a) increases
(b) decreases
(c) first increases and then decreases (d) none of the above
4. Powdering of sugar is a
(a) chemical change
(b) physical change
(c) both (a) and (b)
(d) none of the above
5. Making a paper boat by cutting paper is an
(a) irreversible change
(b) physical change
(c) both (a) and (b)
(d) none of the above​

Answer 1

Answer:

1) = (A).

2) =(A).

3) =(A).

4) = (B).

5) = (A).

OK Bye Thanks :)

Answer 2

Answer:

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