1.

Which of the following chemical reactions represents Hall-Heroult Process? (A) Cr2O3 + 2Al → Al2O3 + 2Cr(B) 2Al2O3 + 3C → 4Al + 3CO2(C) FeO + CO → Fe + CO2(D) 2[Au(CN)2](aq) + Zn(s) → Zn(s) →2Au(s) + [Zn(CN4)]2-

Answer»

Correct option is (B) 2Al2O3 + 3C → 4Al + 3CO2

Hall Heroult process is the major industrial process for extraction of aluminium.



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