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Q.

Refining of impure copper with zinc impurity is to be done by electrolysis using electrode as : 

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a

 CathodeAnode
(d)Pure zincimpure zinc

b

 CathodeAnode
(a)pure copperPure zinc

c

 CathodeAnode
(b)Pure zincpure copper

d

 CathodeAnode
(c)pure copperimpure copper

answer is C.

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Detailed Solution

The electrolytic refining procedure is used to clean up a lot of metals. The impure sample is used as the anode in this process because the impurity in the zinc dissolves, and the pure copper is used as the cathode because the sample's pure metal deposits on the cathode.

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