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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2009

  • question_answer
        Oxidation state of Fe in\[F{{e}_{3}}{{O}_{4}}\]is

    A)  2/3                                       

    B)  4/5

    C)  5/4                                       

    D)  8/3

    Correct Answer: D

    Solution :

                    \[F{{e}_{3}}{{O}_{4}},\]suppose the oxidation number of Fe is \[x\]. So,       \[3\times x+4(-2)=0\] \[3x-8=0\] \[3x=8\]                 \[x=\frac{8}{3}\]


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