Which solution is used as electrolyte in the extraction of aluminium metal ?
Which solution is used as electrolyte in the extraction of aluminium metal ?
A. `Al_(2)O_(3).H_(2)O`
B. `Al_(2)O_(3) " and " Na_(3)AlF_(6)` (molten solution)
C. `Al_(2)O_(3)`
D. None of these
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Correct Answer - B
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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