AFMC AFMC Solved Paper-2005

  • question_answer
    Formula for tear gas is :

    A) \[COC{{l}_{2}}\]                               

    B) \[CC{{l}_{3}}N{{O}_{2}}\]

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

    D) none of these

    Correct Answer: B

    Solution :

    \[\text{CHC}{{\text{l}}_{\text{3}}}\] (chloroform) react with conc. \[\text{HN}{{\text{O}}_{3}}\]on heating to form chloropicrin \[(CC{{l}_{3}}N{{O}_{2}})\]\[CHC{{l}_{3}}+HON{{O}_{2}}\xrightarrow{{}}\underset{Chloropicrin}{\mathop{CC{{l}_{3}}.N{{O}_{2}}+{{H}_{2}}O}}\,\] Chloropicrin Chloropicrin is used as an insecticide and also war gas. It is also known as nitrochloroformortear gas.


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