Arrange the following compounds in order of increasing boiling point.

l. CH3CH2CH2OH
II. CH3CH2OH
III. CH3CH2CH2CH2OH
IV. CH3CH2CH2CH2CH3

A. I < II < IV < III
B. IV < III < II < I
C. I < II < III < IV
D. IV < II < I < III

Correct Answer: Option D

D. IV < II < I < III

Explanation

Ethanol 78°C
Propanol 97°C
Butanol 118°C
Pentane 36.1°C

Hence, the arrangement is IV, II, I, III.