Electro-Refining:-
Electrorefining of metal is a process in which obtaining of pure metal from ore by a process of …………….
a) electrolysis
b) roasting
c) conduction
d) filtration
The impure blister copper is refined by...…… process.
a) distillation
b) electroplating
c) electrolyctic
d) none of these
The copper obtained by electro-refining process is …………… pure.
a) 78.9%
b) 89.9 %
c) 99.9 %
d) 90 %
During electrolytic refining of copper, pure copper is deposited on ……………plates.
a) cathode
b) anode
c) neutral
d) all of these
Manufacture of Sodium Carbonate by Solvays process:-
