The crystals of copper sulphate are ______ in colour.

red

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blue

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white

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none of the above

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Solution

The correct option is C blue
Crystal of copper sulphate is blue in colour because $C u^{+ 2}$ absorbs the wavelength of orange light and thus emits blue colour.

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Similar questions

Crystals of copper sulphate are prepared by the method of:

(a) What happens when copper sulphate crystals are heated strongly? Explain with help of an equation.

(b) What happens when a few drops of water are added to anhydrous copper sulphate? Explain with the help of an equation.

How many molecules of water of crystallisation (per formula unit) are present in :

(a) copper sulphate crystals ?

(b) washing soda ?

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