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From copper pyrite, copper is extracted ...

From copper pyrite, copper is extracted in two stages. In the reverberatory furnace which of the following reaction not occur?

A

A. `2CuFeS_(2) + 4O_(2) to Cu_(2)S + 2FeO + 3SO_(2)`

B

B. `FeO + SiO_(2) to FeSiO_(3)`

C

C. `Cu_(2)O + FeS to Cu_(2)S + FeO`

D

D. `Cu_(2)S + 2Cu_(2)O to 6Cu + SO_(2)`

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