Optimum current density of ………A/m2 used in electro refining of copper.
a) 100-120
b) 50-60
c) 150-300
d) 160-400
Oxidation occurs at …….. in electro refining of copper in electrolytic cell.
a) anode
b) cathode
c) a & b both
d) none of these
Reduction occurs at …….. in electro refining of copper in electrolytic cell.
a) anode
b) cathode
c) a & b both
d) none of these
By electrolytic refining ……… pure copper is obtained.
a) 50%
b) 75%
c) 99.99%
d) 100%
The device in which chemical energy is converted into electrical energy is called ……
a) electrolytic cell
b) galvanic cell
c) solar cell
d) all of these
Galvanic cell is also called ………
a) Nelson cell
b) Downs cell
c) voltaic cell
d) electrolytic cell
