The role of fluorspar \[(Ca{{F}_{2}})\] which is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite \[(N{{a}_{3}}Al{{F}_{6}})\] is

to increase the temperature of the melt.

to make the fused mixture very conducting

to decrease the rate of oxidation of carbon at the anode.

The role of fluorspar \[(Ca{{F}_{2}})\] which is added in small quanti

1.	The role of fluorspar \[(Ca{{F}_{2}})\] which is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite \[(N{{a}_{3}}Al{{F}_{6}})\] 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» C. to increase the temperature of the melt.

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The role of fluorspar \[(Ca{{F}_{2}})\] which is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite \[(N{{a}_{3}}Al{{F}_{6}})\] is

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