Question

In electrolytic refining method

• A. the impure metal is made to act as anode
• B. a strip of the pure metal is used as cathode
• C. they are kept in a suitable electrolytic both containing soluble salt of the same metal
• D. All the above are true

Answer 1

Answer: (D)

In electrolytic refining method, the impure metal is made to act as anode. A strip of the same metal in pure form is used as cathode. They are kept in a suitable electrolytic both containing soluble salt of the same metal. The more basic metal remains in the solution and the less basic ones go to the anode mud.
Anode $M⟶M^{n+}+n{e}^{-}$
Cathode $M^{n+}+n{e}^{-}⟶M$