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Which one of the following reactions is ...

Which one of the following reactions is an example of auto-reduction?

A

`Fe_(3)O_(4) + 4CO to 3Fe+4CO_(2)`

B

`Cu_(2)O+C to 2Cu+CO`

C

`Cu^(2+)(aq)+ Fe(s) to Cu(s)+ Fe^(2+)(aq)`

D

`Cu_(2)O+(1)/(2)Cu_(2)S to 3Cu+ (1)/(2)SO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Cu, Pb, Hg are extracted by Auto - reduction process
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