NEET-XII-Chemistry

exam-1 year:2016

with Solutions -
  • #46
    Consider the molecules ``CH_4, NH_3 and H_2O``.
    Which of the given statements is false ?
    (1) The H-C-H bond angle in ``CH_4``, the H-N-H
    bond angle in ``NH_3``, and the H-O-H bond angle
    in ``H_2O`` are all greater than 90°
    (2) The H-O-H bond angle in ``H_2O`` is larger than
    the H-C-H bond angle in ``CH_4``.
    (3) The H-O-H bond angle in ``H_2O`` is smaller than
    the H-N-H bond angle in ``NH_3``.
    (4) The H-C-H bond angle in ``CH_4`` is larger than
    the H-N-H bond angle in ``NH_3``.
    digAnsr:   2
    Ans : (2)
    Sol.
    C
    H
    HH
    H
    109°28'
    N
    H
    HH
    ..
    107°
    O
    H H
    .. 104.5°
    ..
    CH4 NH3 H O2