During electrolytic refining of copper, the anode is made up of

pure copper, metal

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impure copper metal

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graphite

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platinum

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Solution

The correct option is B impure copper metal
Pure copper acts as a cathode and impure cathode acts as an anode. During electrolysis, the weight of impure copper decreases, and that of pure copper increases.

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During the electrolytic refining of copper, the impurities which settled down at the bottom of the anode in the form of sludge are called as __.

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