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Aluminium metal is purified by `:`

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Aluminium metal is purified by `:`
A. electrolyzing `Al_(2)O_(3)` dissolve in `Na_(2)AlF_(6)`
B. reducing `Al_(2)O_(3)` with coke
C. reducing `AlO_(3)` with chromium
D. heating `Al_(2)O_(3)` and cryolite
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Correct Answer - A
`Al` from `AlO_(3)` can be obtained only by electrolysis of fused `Al_(2)O_(3)` dissolve in `Na_(3)AIF_(6)`.
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Aluminium metal is purified by `:`
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