Fewpal
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Which of the following statement(s) is(are) correct for the extractive metallurgy of aluminium ? 

(A) Red bauxite contains the impurities of iron oxides SiO2 and TiO2

(B) Red bauxite is purified by Hall’s and Serpeck’s process 

(C) Hall-Heroult process is used for the electrolytic reduction of molten alumina dissolved in molten cryolite. 

(D) In electrolytic reduction of alumina fluorine gas is liberated at anode as by product.

1 Answer

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Best answer

Correct option is (AC)

(A) Red bauxite contains the impurities of iron oxides SiO2 and TiO2.

(C) Hall-Heroult process is used for the electrolytic reduction of molten alumina dissolved in molten cryolite.

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