1.

Which solution is used as electrolyte in the extraction of aluminium metal ?

Answer»

`Al_(2)O_(3).H_(2)O`
`Al_(2)O_(3) " and " Na_(3)AlF_(6)` (molten SOLUTION)
`Al_(2)O_(3)`
NONE of these

Solution :Molten solution of `Al_(2)O_(3) " and " Na_(3)AlF_(6)` is used as ELECTROLYTE because `Al_(2)O_(3)` as such is a poor CONDUCTOR of electricity.


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