Cations move towards……in electrolytic cell.
a) anode
b) cathode
c) a & b both
d) none of these
At cathode, cations ……… electrons.
a) gain
b) lose
c) both a & b
d) none of these
At anode, anions ……. electrons.
a) gain
b) lose
c) both a & b
d) none of these
Copper is purified by ……..
a) electroplating
b) electro-refining
c) solvent extraction
d) all of these
Electro-refining of copper is carried out at…….OC
a) 103
b) 75
c) 50
d) 23
Electro-refining of copper is carried by applying …….. voltage
a) 20V
b) 60V
c) 120V
d) 0.3V
