JEE AdvancedMetallurgyMedium
Question
Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out :
Options
A.in the presence of NaCl
B.in the presence of fluorite
C.in the presence of cryolite which forms a melt with lower melting temperature
D.in the presence of cryolite which forms a melt with higher melting temperature
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