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Observe of the following statements rega...

Observe of the following statements regarding purification of bauxite:
(I) During Hall's process, silica is removed as Si(vapour)
Bauxite ore contaminated with `Fe_(2)O_(3)` is purfied in Baeyer's process.
During Serpeck's process, AIN is foremed
The correct answer is:

A

I, II and III are correct

B

Only I and II are correct

C

Only I and III are correct

D

Only II and III are correct

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The correct Answer is:
D
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