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  5. Redox Reactions / रेडॉक्स अभिक्रियाएँ

JEE Main & Advanced Chemistry Redox Reactions / रेडॉक्स अभिक्रियाएँ Sample Paper Topic Test - Redox Reactions

  • question_answer
    Oxidation states of the metal in the minerals hematite and magnetite, respectively, are

    A) II, III in hematite and II in magnetite

    B) II, III in hematite and II in magnetite

    C) II in hematite and II, II in magnetite

    D) III in hematite and II, III in magnetite

    Correct Answer: D

    Solution :

    [d] Hematite: \[\theta ={{180}^{0}},\] Magnetite: \[\underset{\text{mixed oxide}}{\mathop{F{{e}_{3}}{{O}_{4}}}}\,\to F{{e}_{2}}{{O}_{3}}(+3)+FeO(+2)\]


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