NEET Chemistry Chemical Bonding and Molecular Structure / रासायनिक आबंधन एवं आणविक संरचना NEET PYQ-Chemical Bonding Molecular

  • question_answer
    The surface tension of which of the following liquid is maximum?           [AIPMT (S) 2005]

    A)  \[{{H}_{2}}O\]    

    B)     \[{{C}_{6}}{{H}_{6}}\]

    C)  \[C{{H}_{3}}OH\]      

    D)   \[{{C}_{2}}{{H}_{5}}OH\]

    Correct Answer: A

    Solution :

    Surface tension of \[{{H}_{2}}O\] is maximum due to maximum hydrogen bonding in comparison to\[{{C}_{6}}{{H}_{6}},\text{ }C{{H}_{3}}OH,\text{ }{{C}_{2}}{{H}_{5}}OH\].
    The order of H-bonding is \[{{H}_{2}}O>C{{H}_{3}}OH\]\[>{{C}_{2}}{{H}_{5}}OH\].
                (Benzene does not form H-bond).


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