The function of fluorspar in the electrolytic reduction of alumina dissolved in fused cryolite $(Na_3AlF_6)$ is :
The function of fluorspar in the electrolytic reduction of alumina dissolved in fused cryolite $(Na_3AlF_6)$ is :
- A
as a catalyst
- B
to lower the temperature of melt and to make the fused mixture very conducting
- C
to decrease the rate of oxidation of carbon anode
- D
none of the above
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