JEE Main & Advanced Chemistry The p-block Elements-II / p-ब्लॉक तत्व-II Question Bank Nitrogen Family

  • question_answer
    Pure \[{{N}_{2}}\] gas is obtained from [CBSE PMT 1991]

    A) \[N{{H}_{3}}+NaN{{O}_{2}}\]

    B) \[N{{H}_{4}}Cl+NaN{{O}_{2}}\]

    C) \[{{N}_{2}}O+Cu\]

    D) \[{{(N{{H}_{4}})}_{2}}C{{r}_{2}}{{O}_{7}}\]

    Correct Answer: B

    Solution :

    \[\underset{(aq)}{\mathop{N{{H}_{4}}Cl}}\,+\underset{(aq)}{\mathop{NaN{{O}_{2}}}}\,\,\to \,N{{H}_{4}}N{{O}_{2}}+NaCl\] \[N{{H}_{4}}N{{O}_{2}}\,\xrightarrow{\text{heat}}\,\underset{(g)}{\mathop{{{N}_{2}}}}\,+\underset{(l)}{\mathop{2{{H}_{2}}O}}\,\]


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