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In the context of the Hall-Heroult proce...

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

A

`Al^(3+)` is reduced at the cathode to form Al

B

`Na_(3)AlF_(6)` serves as the electrolyte

C

`CO and CO_(2)` are produced in this process

D

`Al_(2)O_(3)` is mixed with `CaF_(2)` which lowers the melting point of the mixture and brings conductivity

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The correct Answer is:
B
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