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

Aluminium is extracted from alumina by electrolysis. But the alumina is a bad conductor of electricity so the alumina is added with cryolite and fluorspar to increase the conductivity of the mixture and it also decreases the melting point of the mixture. 100. In the commercial electrochemical process for aluminium extraction, the electrolyte used as (a) Al(OH)3 in NaOH solution (b) an aqueous solution of Al2 (SO4)3 (c) a molten mixture of Al2O3 and Na3AlF6 (d) a molten mixture of AlO (OH) and Al (OH)3 Aluminium is extracted from alumina by electrolysis. But the alumina is a bad conductor of el