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

Options

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

B

Explanation

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