RAJASTHAN PMT Rajasthan - PMT Solved Paper-2008

  • question_answer
    Which one of the following is an amphoteric oxide?

    A) \[ZnO\]                               

    B)        \[N{{a}_{2}}O\]

    C)        \[S{{O}_{2}}\]                                   

    D)        \[{{B}_{2}}{{O}_{3}}\]

    Correct Answer: A

    Solution :

    \[ZnO\] can react with acid and base both.                 \[ZnO+2HCl\xrightarrow{{}}ZnC{{l}_{2}}+{{H}_{2}}O\]                 \[ZnO+2NaOH\xrightarrow{{}}N{{a}_{2}}ZN{{O}_{2}}+{{H}_{2}}O\]


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