NEET Sample Paper NEET Sample Test Paper-51

  • question_answer 57) Zn gives \[{{H}_{2}}\] gas with \[{{H}_{2}}S{{O}_{4}}\] and HCl but not with \[HN{{O}_{3}}\] because-

    A) in electrochemical series Zn is above hydrogen

    B) \[NO_{3}^{\Theta }\] ion is reduced in preference to hydronium ion

    C) Zn act as an oxidising agent when react with \[HN{{O}_{3}}\]

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

    Correct Answer: B

    Solution :

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

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