Copper sulphate dissolved in water can be recovered as solid by:

Evaporation

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Filtration

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Centrifugation

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All of above

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Solution

The correct option is A Evaporation
Evaporation is used to separate a soluble solid from a liquid. Copper sulphate crystals dissolve in water to form a copper sulphate solution. During evaporation, the water evaporates away leaving solid copper sulphate crystals behind.

Filteration cannot be used as the copper crystals are very small and can easily pass through the pores of the filter paper along with the water.
The centrifugation technique is used when there is a difference in the densities of the solute and solvent particles, but in the case of a true solution, it's not the case. Hence, it can't be used.

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