Q.
A. Electrolytic cell is iron cell and it it contains three layer mass
B. under layer is pure Al and Carbon rods in it are cathode and the bottom layer contains impure Al and carbon lining of the cell is anode
C. Electrolyte is the middle layer with fused mixture of flouri of Na,Al Ba
D. All the above
E. None of the above
Correct choice: D
Explanation: