CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2009

  • question_answer
    Lassaignes test for the detection of nitrogen fails in

    A) \[{{H}_{2}}NCONHN{{H}_{2}}-HCl\]

    B) \[N{{H}_{2}}N{{H}_{2}}-HCl\]

    C) \[N{{H}_{2}}CON{{H}_{2}}\]

    D) \[{{C}_{6}}{{H}_{5}}-NH-N{{H}_{2}}.HCl\]

    E) \[{{C}_{6}}{{H}_{5}}CON{{H}_{2}}\]

    Correct Answer: B

    Solution :

    Lassaignes test is given by those nitrogenous compounds in which carbon is also present along with nitrogen. In\[N{{H}_{2}}.N{{H}_{2}}.HCl,\]carbon is absent, so it does not give Lassaignes test.


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