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

$ (a)\;\text{pure zinc pure copper } \\(b)\;\text{impure sample pure copper} \\(c)\;\text{impure zinc impure sample} \\ (d)\;\text{pure copper impure sample.} $
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The sample of copper with zinc impurity is to be purified by electrolysis, the appropriate electrodes are pure copper impure sample.
Hence d is the correct answer.
answered Mar 18, 2014 by meena.p
 

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