The element that can be refined by distillation is:

Which of the following elements is purified by vapour phase refining?

During the purification of an impure metal by electrolysis,the impure metal is used as the ...... and the pure metal is used as the ...... .

In the electrolytic refining of metals,the electrolysis of an aqueous solution of its complex salt is performed using an impure metal as the anode and a strip of pure metal as the cathode. This method cannot be used for the refining of which of the following metals?

Aluminium is refined by

The anode mud in the electrolytic refining of silver contains