Glauber's salt is:

Heptahydrate

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Decahydrate

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Pentahydrate

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Dihydrate

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Solution

The correct option is B Decahydrate
The chemical formula of Glauber's salt is sodium sulphate decahydrate. So, its formula can be written as $N a_{2} S O_{4} \cdot 10 H_{2} O$ . From the formula, it is clear that salt is decahydrate means it has 10 molecules of water which is present as water of crystallization.

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Glauber's salt is:

The correct option is B DecahydrateThe chemical formula of Glauber's salt is sodium sulphate decahydrate. So, its formula can be written as Na2SO4⋅10H2O. From the formula, it is clear that salt is decahydrate means it has 10 molecules of water which is present as water of crystallization.