JEE Main 24 June 2022 Shift 2 Solved Paper

Section: Chemistry

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Question : 67 of 90

Marks: +1, -0

Which of the following chemical reactions represents Hall-Heroult Process?

[24-Jun-2022-Shift-2]

Cr2O3+2‌Al→Al2O3+2‌Cr
2Al2O3+3C→4‌Al+3CO2
FeO+CO→Fe+CO2
2[Au(CN)2](aq)−+Zn(s)→2‌Au(s)+[Zn(CN4)]2−

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