The reduction of Zinc oxide is done using

In the electrolytic cell for the extraction of Al, the gases formed in anode are

In the reduction of molten metal salt, _____ is done .

Benefaction is otherwise called

Different compound of a mixture are differently adsorbed on an adsorbant.This principle is based on

______ is a type of gravity separation.

Which scrap is more suitable for reducing the leached copper ore?

The anodes are of impure metal and pure metal are taken as cathode. The technique used here is 

Hydrated alumina is heated to give back pure Al₂O₃ .The temperature require is

The technique  very useful in the refining of low melting metal like tin is