(B) Acidified aqueous CuSO4 is used as electrolyte
(C) Pure Cu deposits at cathode
(D) Impurities settle as anode – mud
(1) Impure Cu strip is used as anode and impurities settle as anode mud.
(2) Pure Cu deposits at cathode.
(3) Acidified aqueous CuSO4 is used as electrolyte.