Which one of the following Figures correctly describes the process of electrolytic refining? 

Options

A.
B.
C.
D.

Answer

C

Explanation

A lump of impure copper is taken as anode and a thin strip of pure metal is taken as cathode. A water-soluble metal.s salt, copper sulphate in the case of copper is taken as electrolyte. Copper from impure anode dissolves into the solution and `Cu^(2+)` ions from the solution are deposited on the cathode.