(D) In the process of electrolytic refining of metals,the impure metal is always made the anode,and a thin strip of pure metal is made the cathode.The

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(D) In the process of electrolytic refining of metals,the impure metal is always made the anode,and a thin strip of pure metal is made the cathode.Therefore,for the purification of copper,the pure copper strip acts as the cathode and the impure copper sample acts as the anode.Thus,the correct choice is $D$.

Class 12 Chemistry General Principles and Processes of Isolation of Elements Refining of crude Metal

Medium

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

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A
Pure zinc,Pure copper
B
Impure sample,Pure copper
C
Impure zinc,Impure sample
D
Pure copper,Impure sample

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General Principles and Processes of Isolation of Elements

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Refining of crude Metal

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

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