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Question

Number of water molecules present in one formula unit of a salt is called__.


A

water of hydration

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B

water of crystallisation

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C

evaporated water

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D

solid water

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Solution

The correct option is B

water of crystallisation


The water of crystallization is the fixed number of water molecules present in one formula unit of a salt.
Eg; Five water molecules are present in one formula unit of copper sulphate. The chemical formula for hydrated copper sulphate is CuSO4.5H2O.


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