alleryStart learning →In the electrolytic refining of copper, the anode and cathode are respectively
Aimpure copper and pure copper
Bpure copper and impure copper
Ccarbon and pure copper
Dplatinum and impure copper
Answer & Solution
Correct answer: A. impure copper and pure copper
1. In electrolytic refining the **impure metal is the anode** and a thin sheet of **pure metal is the cathode**.
2. Copper dissolves from the impure anode and equivalent pure copper deposits on the cathode.
3. Less reactive impurities (Ag, Au) collect below the anode as anode mud.
_Source: Samacheer Kalvi Class 12 Chemistry Vol.1, Unit 1 'Metallurgy', §1.6.3 / Evaluation Q.21_
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