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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
General Principles and Processes of Isolation of Metals

NTA Abhyas 2020 · Chemistry · General Principles and Processes of Isolation of Metals

Oxidation state of iron and chromium in chromite ore is:

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 FeCr2O4FeC{r}_{2}{O}_{4} containing Fe+2Fe^{+ 2} and Cr+3Cr^{+ 3}
{\text{FeCr}_{2} {O}_{4} = \text{FeO} ⋅ {\text{Cr}_{2} {O}_{3}
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