Q73 / 180 · AIIMS 2014 · Chemistry

Slag formed in blast furnace, removes the impurity of

  • Correct answer
    A
    $\mathrm{SiO}_2$
  • B
    $\mathrm{CaO}$
  • C
    $\mathrm{CO}_2$
  • D
    $\mathrm{FeO}$

Solution

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

Hence, the correct answer is option: 'A'.

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