Question

The major role of flourspar, `CaF_(2)` which is added in small amount in the electrolytic reduction of `Al_(2)O_(3)` dissolved on fused cryolite in fused cryolite is
A. as a catalyst
B. to make the fused mixture very conducting
C. to increases the temperature of the melt
D. to decreases the rate of oxidation of carbon at the anode

Answer 1

Correct Answer - B
Addition of `CaF_(2)` to alumina dissolve in `Na_(2)AlF_(6)` makes it more conducting.