Q.

Copper sulphate crystals which seem to be dry do not contain water of crystallisation. 

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a

True

b

False

answer is B.

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Detailed Solution

Copper sulphate crystals which seem to be dry contain water of crystallisation. When we heat the crystals, this water is removed and the salt turns white. If you moisten the crystals again with water, you will find that blue colour of the crystals reappears.

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Copper sulphate crystals which seem to be dry do not contain water of crystallisation.