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The major role of flourspar (CaF(2)), wh...

The major role of flourspar `(CaF_(2))`, which is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite `(Na_(3)AlF_(6))`, is

A

to acs as a catalyst

B

to 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
`CaF_(2)` is neutral flux.
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