BCECE Medical BCECE Medical Solved Papers-2009

  • question_answer This compound gives off \[{{O}_{2}}\] on moderate heating

    A)  HgO           

    B)  ZnO

    C)  CaO           

    D)  \[A{{l}_{2}}{{O}_{3}}\]

    Correct Answer: A

    Solution :

    Oxides of less electropositive metals (like HgO) on moderate heating gives off \[{{O}_{2}}\]. \[2HgO\xrightarrow{High\,\,\,temperature}2Hg+{{O}_{2}}\]


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