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NEET Sample Paper NEET Sample Test Paper-25

  • question_answer
    Zn gives hydrogen gas with \[{{H}_{2}}S{{O}_{4}}\]and HCl but not with\[HN{{O}_{3}}\]because

    A)  \[N{{O}_{2}}\]is reduced in preference to\[{{H}_{3}}{{O}^{+}}\]

    B) \[~HN{{O}_{3}}\] is weaker acid than \[{{H}_{2}}S{{O}_{4}}\]and HCl

    C)  Zn acts as oxidising agent when reacts with \[HN{{O}_{3}}\]

    D)  In electrochemical series Zn is placed above the hydrogen

    Correct Answer: B

    Solution :

    \[4Zn+10HN{{O}_{3}}\to 4Zn{{(N{{O}_{3}})}_{2}}+N{{H}_{4}}N{{O}_{3}}+3{{H}_{2}}O\]


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