In the context of the Hall-Heroult process for the extraction of Al, which of the following statement is false?

Options

A. `Al_2O_3` is mixed with `CaF_2` which lowers the melting point of the mixture and brings conductivity.
B. `Al^(+3)` is reduced at the cathode to form Al.
C. `Na_3 AlF_6` serves as the electrolyte
D. `CO` and `CO_2` are produced in this process.

Answer

C

Explanation

`Al_2O_3` acts as an electrolyte and `Na_3AlF_6` acts as a solvent, rest all the statements are true.