Question

3. Souring of milk is
(a) desirable change (b) irreversilde change (c) periodic change (d) reversible change
4. On heating, metals
(a) expand (c) are not affected (b) contract (d) catch fire
5. An irreversible change among the following is
(a) melting of wax (c) burning of candle (b) tearing of paper (d) freezing of water​

Answer 1

Answer:

3. irreversible change

4. expand

5. tearing of paper

Explanation:

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Answer 2

3.option a

4.option b

5.option c