d and f-Block ElementsHard

Question

When the sample of copper with zinc impurity is to be purified by electrolysis, the appropriate electrodes are

Options

A.cathode = pure zinc
anode = pure copper
B.cathode = impure sample
anode = pure copper
C.cathode = impure zinc
anode = impure sample
D.cathode = pure copper
anode = impure sample

Solution

Pure metal always deposits at cathode

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