Published by:
CGP EDU Academic Team
Published on: August 13, 2026
In Hall’s process, the main reagent is mixed with
A
NaF
B
C
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
B
Pure alumina is a bad conductor of electricity and the fusion temperature of pure alumina is about 2000°C and at this temperature when the electrolysis is carried of fused mass the metal formed vapoureses as the boiling point of Al is 1800° C To overcome this difficulty, 
and 
are mixed with alumina.
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