In the extraction of copper from its sulphide ore, the metal is formed by the reduction of Cu2O with

(i) FeS

(ii) CO

(iii) Cu2S

(iv) SO2

Correct Answer: (iii) Cu2S

Explanation:

Reaction Involved – 2Cu₂S+3O₂ →2Cu₂​O+2SO₂

2 Cu₂​O+ Cu₂S  →6Cu+ SO₂