Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out:A. in the presence of `NaCl`B. `in the presence of fluoriteC. in the presence of cryolite which forms a melt with higher melting temperatureD. in the presence of cryolite which forms a melt with lower melting temperature

Electrolytic reduction of alumina to aluminium by Hall-Heroult process

1.	Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out:A. in the presence of `NaCl`B. `in the presence of fluoriteC. in the presence of cryolite which forms a melt with higher melting temperatureD. in the presence of cryolite which forms a melt with lower melting temperature
Answer» Correct Answer - D Addition of crolite makes the fuse melt at lower melting temperature as well as good conductor of current.

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