In the smelting of iron,which of the following reactions takes place in the blast furnace at $400\,^{\circ}C - 600\,^{\circ}C$?

  • A
    $CaO + SiO_2 \to CaSiO_3$
  • B
    $2FeS + 3O_2 \to 2FeO + 2SO_2$
  • C
    $FeO + SiO_2 \to FeSiO_3$
  • D
    $3Fe_2O_3 + CO \to 2Fe_3O_4 + CO_2$

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