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Aluminum is exteracted from alumine `AI_(2)O_(3)` by electrolysis of a molten mixture of :

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Aluminum is exteracted from alumine `AI_(2)O_(3)` by electrolysis of a molten mixture of :
A. `Al_(2)O_(3)+Na_(2)AlF_(6)+CaF_(2)`
B. `Al_(2)O_(3)+KF+Na_(2)AlF_(6)`
C. `Al_(2)O_(3)+HF+NaAlF_(4)`
D. `Al_(2)O_(3)+CaF_(2)+NaAlF_(4)`
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Extraction of `Al` from `Al_(2)O_(3)` is made by electrolytic reduction of molten mixture of alumina `(Al_(2)O_(3))`, cryolite `(Na_(3)AlF_(6))` and flurspar `CaF_(2)` in the ratio of `20:40:20` respectively.
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