Which is not an eg of froth stabilizer ?

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

Mond process is used for the refining of

When the reaction is proceed ,then ΔG is

The blistered appearance of blister copper is due to the presence of

Benefaction is otherwise called

Benefaction is otherwise called

The purest form of Iron is

The separation based on the difference in gravities of the ore and the gangue particle is called

The extraction of gold and Ag involves leaching the metal with