Dissolution of salt in water is a reversible change. Justify.

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Solution

When mixed with water, salt dissolves in it and forms a clear solution. The dissolved salt can be separated from its solution by heating the solution. Since we get back the salt from the mixture, it is a reversible change.

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Question 5

Salt can be separated from its solution (salt dissolved in water) because
(a) mixing of salt in water is a change that can be reversed by heating and melting of salt
(b) mixing of salt in water is a change that cannot be reversed
(c) mixing of salt in water is a permanent change
(d) mixing of salt in water is a change that can be reversed by evaporation

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