Q24 / 76 · NTA Abhyas (JEE Main) 2020 · Chemistry · General Principles and Processes of Isolation of Metals

Oxidation state of iron and chromium in chromite ore is:

Correct answer
A
2, 3
B
3, 2
C
2, 2
D
3,3

Solution

Chromite ore is

F e C r_{2} O_{4}

containing

F e^{+ 2}

and

C r^{+ 3}

{FeCr}_{2} O_{4} = FeO \cdot {Cr}_{2} O_{3}

Hence, the correct answer is option: 'A'.

More General Principles and Processes of Isolation of Metals Questions