Manipal Engineering Manipal Engineering Solved Paper-2009

  • question_answer
    The order of stability of metal oxides is

    A) \[A{{l}_{2}}{{O}_{3}}<MgO<F{{e}_{2}}{{O}_{3}}<C{{r}_{2}}{{O}_{3}}\]

    B)        \[C{{r}_{2}}{{O}_{3}}<MgO<A{{l}_{2}}{{O}_{3}}<F{{e}_{2}}{{O}_{3}}\]

    C)        \[F{{e}_{2}}{{O}_{3}}<C{{r}_{2}}{{O}_{3}}<A{{l}_{2}}{{O}_{3}}<MgO\]

    D)        \[F{{e}_{2}}{{O}_{3}}<A{{l}_{2}}{{O}_{3}}<C{{r}_{2}}{{O}_{3}}<MgO\]

    Correct Answer: C

    Solution :

    The order of stability of metal oxides is as:                 \[F{{e}_{2}}{{O}_{3}}<C{{r}_{2}}{{O}_{3}}<\text{ }A{{l}_{2}}{{O}_{3}}<MgO\]


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