Copper is purified by electrolytic refining of blister copper. The correct statement(s) about this process is(are)
← JEE Advanced 2015 · Paper 1
ChemistryMultiple correct+4 / -2Question 35 of 60
JEE Advanced 2015 · Paper 1, Chemistry question 35
Answer and worked solution
Official answer: B, C, D
In electrolytic refining:
- the impure copper is the anode, not the cathode, so (A) is false;
- acidified CuSO₄ is the electrolyte (B true);
- pure Cu deposits on the cathode (C true);
- noble-metal impurities fall as anode mud (D true).
(B), (C), (D)