A) Oxidation of Fe ore
B) Reduction of Fe ore
C) Formation of slag
D) Purification of Fe formed
Correct Answer: C
Solution :
Lime stone \[(CaC{{O}_{3}})\] is used for formation of slag in Fe extraction \[\underset{\text{Lime stone}}{\mathop{CaC{{O}_{3}}}}\,\xrightarrow{{}}CaO+C{{O}_{2}}\uparrow \] \[CaO+\underset{\begin{smallmatrix} \text{Gangue} \\ \,\,\,\,o\text{r} \\ \text{impurity} \end{smallmatrix}}{\mathop{Si{{O}_{2}}}}\,\xrightarrow{{}}\underset{\text{slag}}{\mathop{CaSi{{O}_{3}}}}\,\]
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