Question

In electrorefining, the impure metal is made.

• A. Anode
• B. Cathode
• C. Anode or cathode
• D. Electrolyte

Answer 1

The correct option is A Anode

The impure metal is made of anode. It anode, oxidation takes place. Hence the impure metal is oxidized to its pure form and anode need is deposited near anode.

The metal in the pure form(ion) is reduced to metal and deposited at cathode.

$M⟶m^{+}+e^{-}$ (anode)

(impure)

$m^{+}+e^{-}⟶m$ (cathode)