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Give scientific reasons: During elect...

Give scientific reasons:
During electrolytic reduction of alumina, cryolite `(Na_3AlF_6) and fluorspar (CaF_2)` are added to the electrolytic mixture containing pure alumina

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State whether the following statements are true or false, correct the false statements. Cryolite (Na_3AlF_6) and Fluorspar (CaF_2) are used to increase the melting point of alumina.

The adjacent figure represents electrolytic reduction of alumina. What is the function of cryolite and fluorspar in this process ?

Find out the correlations: Cryolite : Na_3AlF_6 : : Fluorspar :______

Give scientific reasons: Anodes need to be replaced from time to time during the electrolysis of alumina

Give scientific reasons for the following: Anodes need to be replaced from time to time during the electrolysis of alumina.

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