Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Which of the following reaction is an example of auto reduction?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
: The sulphide ores of certain less electropositive metals like those of Hg, Pb, Cu, etc. when heated in air bring about the conversion of a part of the sulphide ore to oxide or sulphate which then reacts with the remaining sulphide to give the metal and 
No external reducing agent is used is this process.
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