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CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2011

  • question_answer
    In chromite ore, the oxidation number of iron  and chromium are respectively

    A)  +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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