When the sample of Cu with Zn as impurity is to be purified by electrolysis, the appropriate electrodes are :
When the sample of Cu with Zn as impurity is to be purified by electrolysis, the appropriate electrodes are :
A. `{:("Cathode","Anode"),("Pure Zn","Pure Cu"):}`
B. `{:("Cathode","Anode"),("Impure sample","Pure Cu"):}`
C. `{:("Cathode","Anode"),("Impure Zn","Impure sample"):}`
D. `{:("Cathode","Anode"),("Pure Cu","Impure sample"):}`
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Correct Answer - D
Pure Cu acts as cathode while impure sample is in the form of anode.
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