In the correct of the Hall-Heroult process for the extraction of `Al`, which of the following statements is false ?

Options

A. CO and `CO_(2)` are produced in this process
B. `Al_(2)O_(3)` is mixed with `CaF_(2)` which lowers the melting point of the mixture and brings conductivity
C. `Al^(+)` is reduced at the cathode to form Al
D. `Na_(3)AIF_(6)` serves as the electrolyte

Answer

D

Explanation

A mixture of `Al_(2)O_(3) + Na_(3) AIF_(6) + CaF_(2)` is used as electrolyte.