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QJEEM23Ch6572: JEE Main 2023 Chemistry - Class 12 JEEM23Ch6572 Solution: Which one of the following reactions does not occur during…

Which one of the following reactions does not occur during extraction of copper?

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\begin{aligned} {CuFeS}_{2} + O_{2} \overset{Partial roasting}{⟶} \\ {Cu}_{2} S + FeO + {SO}_{2} + \underset{very small}{FeS} + \underset{very small}{{Cu}_{2} O} \\ {Cu}_{2} S + O_{2} \to {Cu}_{2} O + {SO}_{2} \\ FeS + O_{2} \to FeO + {SO}_{2} \\ FeO + {SiO}_{2} \to {FeSiO}_{3} \end{aligned}

No formation of calcium silicate

\left(\mathrm{CaSiO}_3\right)

in extraction of

\mathrm{Cu}