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The major role of fluorpar (CaF2 ) which...

The major role of fluorpar (`CaF_2` ) which added in small quantities in the electrolyte reduction of alumina dissolved in fused cryolite `(N_(3)AlF_(6)` ) is

A

as a catalyst

B

to make fused mixture conducting

C

to lower the melting temperature of the mixture

D

to decrease the rate of oxidtion of carbon at anode.

Text Solution

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The correct Answer is:
B, C
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