In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with (NEET 2016)

During the extraction of copper from copper matte i.e. sulphide ore of copper, sulphur is removed by formation of sulphur dioxide upon passing hot air. As a result, cuprous oxide is formed which is then reduced by copper sulphide to give copper. The reaction is - 2 2 2 2Cu O+Cu S 6Cu+SO -> Therefore, the correct answer is option (a) copper (I) sulphide.