Question

Arrange the following steps in the crystallisation of copper sulphate.
A. Dissolve it in a minimum amount of water.
B. Take some (approximately 5 g) impure sample of copper sulphate in a china dish.
C. Cover the solution with filter paper and leave it undisturbed at room temperature to cool slowly for a day.
D. Evaporate water from the copper sulphate solution so as to get a saturated solution.
E. Filter the impurities out.

• A. A, C, B, D, E
• B. B, D, A, C, E
• C. B, A, D, E, C
• D. B, A, E, D, C

Answer 1

The correct option is C B, A, D, E, C

The correct order of the steps for crystallisation of copper sulphate is B, A, D, E, C.
B. Take some (approximately 5 g) impure sample of copper sulphate in a china dish.
A. Dissolve it in a minimum amount of water.
D. Evaporate water from the copper sulphate solution to get a saturated solution.
E. Filter the impurities out.
C. Cover the solution with filter paper and leave it undisturbed at room temperature to cool slowly for a day.

You will obtain the crystals of copper sulphate in the china dish.