A) \[4-3,+2\]
B) \[+3,+6,\]
C) \[+2,+6,\]
D) \[+2,+3\]
Correct Answer: D
Solution :
Chromite ore is \[FeC{{r}_{2}}{{O}_{4}},\] ie, \[FeO.\,C{{r}_{2}}{{O}_{3}}\] O.N. of \[Fe=+2;\] O.N. of \[Cr=+3\].
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