![\[\begin{array}{l} \hline \mathrm{FeO}+\mathrm{C} \longrightarrow \mathrm{Fe}+\mathrm{CO} \\ \mathrm{CaCO}_{3} \stackrel{\Delta}{\longrightarrow} \mathrm{CaO}+\mathrm{CO}_{2} \\ \mathrm{CaO}+\mathrm{SiO}_{2} \longrightarrow \mathrm{CaSiO}_{2}(\mathrm{Slag}) \end{array}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-ed38f10d86cef3b0a35e8049425f793e_l3.png "Rendered by QuickLaTeX.com")
The following reactions occur in the blast furnace:
(a) In zone of combination,
![\[\mathrm{C}+\mathrm{O}_{2} \longrightarrow \mathrm{CO}_{2}, \Delta \mathrm{H}=-393.3 \mathrm{~kJ}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-089fe44faf5c12980b1c0d291fccfb26_l3.png "Rendered by QuickLaTeX.com")
(b) In zone of heat absorption,
![\[\mathrm{CO}_{2}+\mathrm{C} \longrightarrow 2 \mathrm{CO}, \Delta \mathrm{H}=+163.2 \mathrm{~kJ}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-d0bd19acc36c73e663ff67a277b50ce7_l3.png "Rendered by QuickLaTeX.com")
(c) In zone of slag formation,
![\[\begin{array}{l} \mathrm{CaCO}_{3} \longrightarrow \mathrm{CaO}+\mathrm{CO}_{2} \\ \mathrm{CaO}+\mathrm{SiO}_{2} \longrightarrow \mathrm{CaSiO}_{3} \end{array}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-40c810b143b6cb9f2286afd545b70d8d_l3.png "Rendered by QuickLaTeX.com")
The following reactions occur in the blast furnace:
(a) In zone of combination,
(b) In zone of heat absorption,
(c) In zone of slag formation,
