Question

5. Give two examples for each of the following cases:
(a) Physical changes which are reversible.
(b) Physical changes which are not reversible.
(c) Chemical change

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Answer 1

Answer:

melting candle. tearing paper. burning wood

Answer 2

Answer:

Chemical change :- burning, cooking

Physical changes which are not reversible :- rusting

Physical changes which are reversible :- melting, freezing