JEE Main2017ChemistryChemical Bonding and Molecular StructureActual
The increasing order of the boiling points for the following compounds is: I C 2 H 5 OH II C 2 H 5 Cl III C 2 H 5 CH 3 IV C 2 H 5 OCH 3
Options
- AIV < III < I < ( II )
- BIII < II < I < IV
- CIII < IV < II < I
- DII < III < IV < I
Correct answer
C. III < IV < II < I
Step-by-step solution
Boiling   Point ∝ Dipole moment ∝ H - bonding in the molecules C 2 H 5 CH 3 < C 2 H 5 OCH 3 < C 2 H 5 Cl < C 2 H 5 OH , C 2 H 5 OH - O - H   bond   present . Boiling point also increases with the increasing molecular mass.