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JEE Main & Advanced JEE Main Solved Paper-2017

  • question_answer
    In the following reactions, ZnO is respectively acting as a/an :       ]  \[ZnO+N{{a}_{2}}O\to N{{a}_{2}}Zn{{O}_{2}}\]  \[ZnO+C{{O}_{2}}\to ZnC{{O}_{3}}\]     JEE Main Solved Paper-2017

    A)  base and acid   

    B)  base and base

    C) acid and acid     

    D)  acid and base

    Correct Answer: D

    Solution :

     Although ZnO is an amphoteric oxide but in given reaction. [a] \[\underset{\text{acid}}{\mathop{ZnO}}\,+\underset{\text{base}}{\mathop{N{{a}_{2}}O}}\,\xrightarrow{{}}\underset{\text{salt}}{\mathop{N{{a}_{2}}Zn{{O}_{2}}}}\,\] [b] \[\underset{\text{base}}{\mathop{ZnO}}\,+\underset{\text{acid}}{\mathop{C{{O}_{2}}}}\,\xrightarrow{{}}\underset{\text{salt}}{\mathop{ZnC{{O}_{3}}}}\,\]


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