Two drops of dil. $H_{2} {SO}_{4}$ were added to 1g of ${CuSO}_{4}$ powder and a small amount of hot water was added to dissolve it (step-I). On cooling blue coloured crystals got separated (step-II). Then step – I and step – II are

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Physical & Chemical change respectively

Chemicals physical change respectively

Both chemical change

Both physical change

answer is C.

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Detailed Solution

Dissolution of ${CuSO}_{4}$ powder in presence of $H_{2} {SO}_{4}$ is a physical change. On cooling this hot solution, crystals of ${CuSO}_{4}$ is separated is a physical change.

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