Electrolytic reduction of Al2O3 to Al by Hall- Herault process is carried out
(a) in presence of NaCl.
(b) in presence of fluorite.
(c) in presence of cryolite which forms a melt with lower melting point.
(d) in presence of cryolite which forms a melt with high melting point.
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Explanation:
A Answers is presence of Nacl is is carried out by th e o2 . the presence of fluorite it must be flammable substance made . In the presence of cryolite
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