QJEEM15Ch8ff0: JEE Main 2015 Chemistry - Class 12 JEEM15Ch8ff0 Solution: In the context of the Hall-Heroult process for the extraction…

Question

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

A Al2O3 is mixed with CaF2 which lowers the melting point of the mixture and brings conductivity
B Al3+ is reduced at the cathode to form Al
C Na3AlF6 serves as the electrolyte
D CO and CO2 are produced in this process

Accepted Answer

In the metallurgy of aluminium purified

A l_{2} O_{3}

is mixed with

N a_{3} A l F_{6}

or

C a F_{2}

which lowers the melting point of the mix and brings conductivity.

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