Electrolytic reduction of alumina to aluminium by Hall-Heroult process

1.	Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out
Answer» In the PRESENCE of `NaCl` In the presence of fluorite In the presence of cryolite which forms a MELT lower melting temperatures In the presence of cryolite which forms a melt with high melting temperature. Solution :Electrolytic reduction iof ALUMINA `(Al_(2)O_(3))` to ALUMINIUM by Hall-Heroult, cryolite which forms a melt lower melting temperature.

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