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General Principles and processes of Isolation of Elements
medium
In electrolysis of $Al_2O_3$ by Hall-Heroult process
A
Cryolite $(Na_3AlF_6)$ lowers the melting point of $Al_2O_3$ and increases its electrical conductivity
B
$Al$ is obtained at cathode and $O_2$ at anode
C
Graphite anode is converted into $CO_2$
D
All of these
Solution
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Standard 12
Chemistry
