Arrange the following in decreasing order of their boiling points.
(A) n-butane
(B) 2-methylbutane
(C) N-pentane
(D) 2,2-dimethylpropane

Options

A. `A gt B gt C gt D`
B. `B gt C gt D gt A`
C. `D lt C lt B lt A`
D. `C gt B gt D gt A`

Answer

D

Explanation

As the number of carbon atom increase, boiling, boiling point increases.
Boiling point decreases with branching

(4 carbon atoms with no branching)