Question

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

Answer 1

Correct Answer - C
In the presence of cryolite which forms a melt with lower melting point .