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AIIMS 2014
Exam
AIIMS
Year
2014
Subject
Chemistry
Chapter
General Principles and Processes of Isolation of Metals

AIIMS 2014 · Chemistry · General Principles and Processes of Isolation of Metals

Slag formed in blast furnace, removes the impurity of

Slag formed in blast furnace, removes the impurity of

Options

  1. ASiO2\mathrm{SiO}_2
  2. BCaO\mathrm{CaO}
  3. CCO2\mathrm{CO}_2
  4. DFeO\mathrm{FeO}

Correct answer

A. SiO2\mathrm{SiO}_2

Step-by-step solution

In the blast furnace, SiO2\mathrm{SiO}_2 is removed as calcium silicate. CaO Flux +SiO2 Gangue  (Impurity) ⟶CaSiO3 (Slag) \underset{\text{ Flux }}{\mathrm{CaO}}+\underset{\substack{\text{ Gangue } \\ \text{ (Impurity) }}}{\mathrm{SiO}_2} \longrightarrow \underset{\text{ (Slag) }}{\mathrm{CaSiO}_3}
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