Question Detail
Question
Which of the following functional group series is ranked according to increasing boiling points?
Correct Answer
Option C is the correct answer.
Detailed Explanation
For comparable molecular weights, boiling points increase in the order: alkanes < ethers < thiols < alcohols. This reflects increasing strength of intermolecular forces: van der Waals < dipole-dipole < dipole-dipole + weak H-bonding < strong H-bonding.
Hint
How do different functional groups compare in boiling point?