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Q.

Partial roasting of chalcopyrite produces

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a

Cu2S and FeO

b

Cu2O and FeO

c

CuS and Fe2O3

d

Cu2O and Fe2O3

answer is B.

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Detailed Solution

Partial roasting of chalcopyrite involves the following reactions2CuFeS2 + O2 →Cu2S + 2 FeS + SO2 2Cu2S + 3O2 →2Cu2O +2 SO22 FeS + 3O2 → 2 FeO + 2 SO2
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