In the extraction of copper, metal is formed in the Bessemer converter due to reaction
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a
Cu2S→ 2Cu+S
b
Fe+Cu2O→ 2Cu+FeO
c
2Cu2O→ 4Cu+O2
d
Cu2S+2Cu2O→ 6Cu+SO2
answer is D.
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Detailed Solution
Copper matte is formed in blast furnace in the extraction of copper from copper pyrites. Copper matte is Cu2S with little FeS.Copper matte is then introduced into Bessemer converted where a blast of hot air is blown. The following reaction occurs. Cu2S + 2Cu2O→6Cu+SO2;The process is called self reduction (or) auto reduction.