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In the Hall-Heroult process for the extr...

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

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

D

`Na_(3)AlF_6` helps in increasing the melting point of the mixture

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The correct Answer is:
D
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