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JEE Main & Advanced Chemistry Redox Reactions / रेडॉक्स अभिक्रियाएँ Question Bank Mock Test - Redox Reactions

  • question_answer
    Oxida n states of the metal in the minerals Haematite and magnetite, respectively, are

    A) II, III, in heamatite and III in magnetite

    B)  II, III in haematite and II in magnetite

    C)  II in haematite and II, III in magnetite

    D)  III is haematite and II, III in magnetite

    Correct Answer: D

    Solution :

    [d] Hematite:\[F{{e}_{2}}{{O}_{3}}\Rightarrow \]Oxidation state of Fe=III Magnetite: \[F{{e}_{3}}{{O}_{4}}=FeO.F{{e}_{2}}{{O}_{3}}\] Oxidation state of Fe =II, III


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