What is the electrolytic refining of zinc?

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The electrolyte is zinc sulphate acidified.

At the anode, the metal ion is decreased.

The cathode contains impure metal.

The anode contains graphite.

answer is C.

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Detailed Solution

In this method, the impure metal is converted into a block which forms the anode while cathode is made up of a pure strip of the same metal. These electrodes are suspended in an electrolyte which is the solution of a soluble salt of the metal usually double salt of the metal.

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