Question

The major role of fluorspar (CaF2) which is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite (Na3AlF6) is

(a) as a catalyst

(b) to make the fused mixture very conducting

(c) to increase the temperature of the melt

(d) to decrease the rate of oxidation of carbon at the anode

Answer 1

The correct option (b) to make the fused mixture very conducting

Explanation:

To make the fused mixture very conducting.