Which one of the following salts does not contain water of crystallisation?

Blue vitriol

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Baking soda

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Washing soda

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Gypsum

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Solution

The correct option is B Baking soda

Water of crystallization is the number of water molecules that are present in one formula unit of salt. Baking soda does not have any water molecule incorporated in its crystal lattice.

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Name a salt which does not contain water of crystallisation

Which of the following salt does not contain the water of crystallization?

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