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The function of fluorspar in the electro...

The function of fluorspar in the electrolytic reduction of alumina dissolved in fused cryolite `(Na_(3)AlF_(6))` is :

A

as a catalyst

B

o make the fused mixture very conducting

C

to lower the temperature of the melt

D

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

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The correct Answer is:
B, C
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