JEE Main 2019 Chemistry question

Chemistry General Principles and Processes of Isolation of Elements (Metallurgy)JEE Main 2019

Not in JEE Main or NEET syllabus

Hall-Héroult's process is given by:

(A)Cu(aq) + H(g) → Cu(s) + 2H(aq)
(B)CrO + 2Al → AlO + 2Cr
(C)2AlO + 3C → 4Al + 3COCorrect
(D)ZnO + C Zn + CO

Answer: (C)

Solution

Electrolysis of alumina with carbon anodes gives Al and CO.

Question ID VK-010685