Q. In electro-refining of metal, the impure metal is made the anode and a strip of pure metal is made the cathode during the electrolysis of an aqueous solution of a complex metal salt. This method cannot be used for refining of

 1391  190 General Principles and Processes of Isolation of Elements Report Error

Solution:

Aluminium is refined by electrolytic refining of molten alumina mixed with cryolite.