Question

Which of the following salt solution is used as an electrolyte in the electrolytic refining of copper metal?

• A. Copper Sulphate
• B. Zinc Sulphate
• C. Sodium Chloride
• D. Cryolite

Answer 1

The correct option is A

Copper Sulphate

Electrolytic refining is the method used to refine impure metals. In the process of electrolytic refining, a solution of the metal salt is used as an electrolyte. Since we need copper, we use a salt solution containing copper as an electrolyte. In this case, it is copper sulphate.