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

In the correct 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
In the metallurgy of aluminumum , purified `AI_2O_3` is mixed with `Na_3 AIF_6` or ` CaF_2` which lowers the melting point of the mix and brings conductivity .
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DISHA PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE -1: CONCEPT APPLICATOR
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