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MODEL PAPER 8 — Chemistry STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceChemistryMODEL PAPER 81 Mark
MCQ
Which of the following has highest boiling point?
  • ✓
    C2H5-I
  • B
    C2H5-F
  • C
    C2H5-CI
  • D
    C2H5-Br
✓

Answer

Correct option: A.
C2H5-I
(a) C2H5-I
Explanation: For the same alkyl group the boiling points of haloalkanes are in the order of RF < RCI < RBr < RI as with the increase in size of halogen atom the magnitude of van der Waals forces of attraction increases, resulting in higher boiling points.

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