A) II, III in haematite and III in magnetite
B) II, III in haematite and II in magnetite
C) II in haematite and II, III in magnetite
D) III in the haematite and II, III in magnetite
Correct Answer: D
Solution :
[d] |
(i) Haematite is \[F{{e}_{2}}{{O}_{3}}\] in which Fe is present in III oxidation state. |
(ii) Magnetite \[(F{{e}_{3}}{{O}_{4}})\] is an equimolar mixture of \[FeO\] and\[F{{e}_{2}}{{O}_{3}}\]. |
Oxidation state of Fe in FeO is II. |
Oxidation state of Fe in \[F{{e}_{2}}{{O}_{3}}\] is III. |
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