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.

Electrolytic reduction of Al2O3 to Al by Hall- Herault process is carr

1.	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.
Answer» IExplanation: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