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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 Al F_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.

Text Solution

Verified by Experts

The correct Answer is:
B
In Hall-Heroult process for the extraction of aluminium, electrolyte is `Al_2 O_3` dissolved in `Na_3 AlF_6` containing a small amount of `CaF_2`
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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-COMPETION FILE (Objective Questions) (Multiple Choice Question from competitive examinations)
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  9. Electrolytic refining's is ued to purify which of the following metals...

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  11. Carnallite is an ore of

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