Question

In the extraction of copper frame sulphide are the metal is formed by reduction of ch2O with.
A) FeS
B)CO
C)CU2S
D) NONE OF THESE

Answer 1

I am assuming that the correct question is - "In the extraction of copper from its sulfide ore, the metal is formed by reduction of CH₂O with -"

For this question, the correct answer should be option c - Cu₂S.

Copper is a less electropositive metal and it is usually heated up in the air, which converts its sulfide ore into its sulfate or its oxide. Further reaction with the ore, gives sulfur dioxide and the metal itself.

This process is called as the Auto-reduction process.