JEE Main Chemistry question

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

Not in JEE Main or NEET syllabus

Auto-reduction process is used in the extraction of

(A)Cu and HgCorrect
(B)Zn and Hg
(C)Cu and Al
(D)Fe and Pb

Answer: (A)

Solution

Auto- (self-) reduction occurs when a metal's own oxide and sulphide react together to give the free metal without any external reducing agent, e.g. 2Cu_2O+Cu_2S\to 6Cu+SO_2 and 2HgO+HgS\to 3Hg+SO_2 (reached via roasting

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-145278