CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2010

  • question_answer
    Which of the following is the least basic amine?

    A)  Ethylamine       

    B)  Diethylamine

    C)  Aniline                

    D)         Benzylamine

    E)  Methylamine

    Correct Answer: C

    Solution :

    Basicity of amines can be explained on the basis of availability of electron density on N-atom for protonation. Because of the\[+I\] effect, alkyl group increases the electron density on N-atom in alkyl amines. However, aniline is less basic because phenyl group exerts\[-I\]effect, ie, it withdraws electrons.


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