Question

Solid particles of copper sulphate are prepared by the method of:

• A. Fractional distillation
• B. Crystallisation
• C. Solidification
• D. Distillation

Answer 1

The correct option is B

Crystallisation

Crystals of copper sulphate are prepared by the method of crystallisation. The process is as follows:
A cup full of water is taken in a beaker and few drops of dilute sulphuric acid is added. The water is then heated and when it starts boiling, copper sulphate powder is added with stirring. Copper sulphate powder should be added till the solution becomes saturated .It is then filtered into a china dish and allowed to cool. The solution should be kept undisturbed. After some time, you will see the crystals of copper sulphate.