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Arrange the following in decreasing orde...

Arrange the following in decreasing order of their boiling points.
(a) n-butane
(b) n-pentane
(c) 2-methylbutane
(d) 2, 2-dimethylpropane

A

`a gt b gt c gt d`

B

`b gt c gt d gt a`

C

`d gt c gt b gt a`

D

`c gt b gt d gt a`

Text Solution

Verified by Experts

The correct Answer is:
D
Boiling point decreases with increase in branching and with decrease in total number of carbon atoms. Thus, the correct order is
C (n - pentane) `gt` B (2-methylbutane) `gt` D (2, 2-dimethylpropane) `gt` A (n-butane).
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