The pBlock Elements - Result Question 5
####6. Aluminium is extracted from alumina
(a)
(b)
(c)
(d)
Show Answer
Solution:
- (c) Fused alumina
is a bad conductor of electricity. Therefore, cryolite and fluorspar are added to purified alumina which not only make alumina a good conductor of electricity but also reduce the melting point of the mixture to around .