Extraction of Metals - Result Question 33
####33. Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out
$(2000,1 M)$
(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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Solution:
- Cryolite is added to alumina in order to lower the melting point.
