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NTA Abhyas JEE Main2020ChemistryGeneral Principles and Processes of Isolation of MetalsPractice

Oxidation state of iron and chromium in chromite ore is:

Options

  1. A2, 3
  2. B3, 2
  3. C2, 2
  4. D3,3

Correct answer

A. 2, 3

Step-by-step solution

Chromite ore is F e C r 2 O 4 containing F e + 2 and C r + 3 FeCr 2 O 4 = FeO ⋅ Cr 2 O 3

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