Question

Classify the following changes :

(i) Heating black material (tar) for repairing a road.
(ii) Melting of ice cubes.
(iii) Growth of hair.
(iv) Heating wax.
(v) Burning of candle.
(vi) Burning of incense stick.

Answer 1

(i) Reversible change.
(ii) Reversible Change.
(iii) Irreversible Change.
(iv) Reversible Change.
(v) Irreversible Change.
(vi) Irreversible Change.