Copper is purified by electrolytic refining of blister copper. The correct statement(s) about this process is (are): Impure Cu strip is used as cathode; Acidified aqueous CuSO4 is used as electrolyte; Pure Cu deposits at cathode; Impurities settle as anode-mud

During purification of copper by electrolytic refining of blister copper,(A) Impure Cu strip (blister copper) is used as anode whereas pure Cu strip is used as cathode. Hence, the option (A) is incorrect (B) The electrolyte used is acidified aqueous copper sulphate solution. Hence, the option (B) is correct (C) Pure Cu transfers from anode to cathode and deposits at cathode. Hence, the option (C) is correct (D) Impurities like Fe, Zn, Ni, Co etc. dissolve in the solution as sulphates and others like Au and Ag settle as anode-mud. Hence, the option (D) is correct.