Which among the following reactions occurs at the zone of slag formation in extraction of iron by blast…

Which among the following reactions occurs at the zone of slag formation in extraction of iron by blast furnace?
  1. $\mathrm{C}+\frac{1}{2} \mathrm{O}_{2} \longrightarrow \mathrm{CO}$
  2. $\mathrm{CaO}+\mathrm{SiO}_{2} \longrightarrow \mathrm{CaSiO}_{3}$
  3. $\mathrm{Fe}_{2} \mathrm{O}_{3}+3 \mathrm{CO} \longrightarrow 2 \mathrm{Fe}+3 \mathrm{CO}_{2}$
  4. $\mathrm{Fe}_{2} \mathrm{O}_{3}+3 \mathrm{C} \longrightarrow 2 \mathrm{Fe}+3 \mathrm{CO}$

Solution

The slag formed in the extraction of iron from haematite in the blast furnace is $\mathrm{CaSiO}_{3}$. The reaction in the blast furnace is as follows: $\mathrm{CaO}+\mathrm{SiO}_{2} \rightarrow \mathrm{CaSiO}_{3} \text { (slag) }$

Asked in: MHT CET 2020 (12 Oct Shift 1)

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