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

The major role of flourspar, `CaF_(2)` which is added in small amount in the electrolytic reduction of `Al_(2)O_(3)` dissolved on fused cryolite in fused cryolite is

A

As a catalyst

B

to make the fused mixture for reduction

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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