A) graphite is at the anode
B) the impure metal is at the cathode
C) the metal ion get reduced at the anode
D) acidified zinc sulphate is the electrolyte
Correct Answer: D
Solution :
In the electrolytic refining of zinc, anode is made up of impure zinc while a strip of pure zinc acts as cathode. An acidified solution of zinc sulphate acts as electrolyte. When electricity is passed, following reactions occur At cathode \[Z{{n}^{2+}}+2{{e}^{-}}\xrightarrow{{}}\underset{pure}{\mathop{Zn}}\,\] At anode \[\underset{impure}{\mathop{Zn}}\,\xrightarrow{{}}Z{{n}^{2+}}+2{{e}^{-}}\]
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