Can we reverse the following changes? If yes, suggest the name of the method.
(a) Water into water vapour
(b) Water vapour into water
(c) Ice into water
(d) Curd into milk
(a) Water into water vapour – Yes
By the method of condensation, water vapour can be converted to water.
(b) Water vapour into the water – Yes
On evaporating, water can be converted to water vapour.
(c) Ice into the water – Yes
On freezing, water can be converted to ice.
(d) Curd into milk – No
The conversion of curd to milk is an irreversible process.
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