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NTA Abhyas JEE Main2020ChemistryGeneral Principles and Processes of Isolation of MetalsPractice

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 + SiO 2 → CaSiO 3 b   3   Fe 2 O 3   +   CO → 2   Fe 3 O 4   +   CO 2 c FeO + SiO 2 → FeSiO 3 d FeO → Fe + 1 2 O 2

Options

  1. Ac and d
  2. Ba and d
  3. Ca
  4. Dd

Correct answer

A. c and d

Step-by-step solution

CaO + Si O 2 → CaSi O 3 3F e 2 O 3 + CO → 2F e 3 O 4 + C O 2 Used as flux. Reduction is done by CO. Hence these two reactions are possible butthe reactions given below are not possible FeO → Fe + 1 2 O 2 FeO + Si O 2 → FeSi O 3

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