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In electro-refining of metal the impure ...

In electro-refining of metal the impure metal is made the anode and a strip of pure metal the cathode during the electrolysis of an aqueous solution of a complex metal salt. This method cannot be used for refining of:

A

silver

B

Copper

C

Aluminium

D

Sodium

Text Solution

Verified by Experts

The correct Answer is:
B
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