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Electrolytic reduction of Alumina to Aluminium by Hall-Heroult process is carried out
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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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Correct option is C
Cryolite increases the conductivity and decreasing the melting point
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