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The function of fluorspar in the electro...

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

A

as a catalyst

B

to lower the temperature of the melt and to make the fused mixture very conducting

C

to decrease the rate of oxidation of carbon at the anode

D

none of the above

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The correct Answer is:
B
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