Verified Solution • 2025–26 Session moderate

QJEEM20Ch456a: JEE Main 2020 Chemistry - Class 12 JEEM20Ch456a Solution: Among the reactions (a) - (d), the reaction(s) that does/do not …

Among the reactions (a) - (d), the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are :
(a) CaO + SiO2 →\to CaSiO3
(b) 3Fe2O3 + CO →\to 2Fe3O4 + CO2
(c) FeO + SiO2 →\to FeSiO3
(d) FeO →\to Fe + 12{{1 \over 2}} O2

Multiple Choice Options

  • A (a) and (d)
  • B (c) and (d)
  • C (a)
  • D (d)

Step-by-Step Verified Solution

In blast furnace (metallugy of iron) involved reactions are

(a) CaO + SiO2 →\to CaSiO3

(b) 3Fe2O3 + CO →\to 2Fe3O4 + CO2

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