Arrange the following compounds in increasing order of their boiling points.
(a) (ii) < (i) < (iii) (b) (i) < (ii) < (iii)
(c) (iii) < (i) < (ii) (d) (iii) < (ii) <(i)
Answer: (c) (iii) < (i) < (ii)
Boiling points of isomeric haloalkanes decrease with increase in branching as with the increase in branching surface area decreases which leads to decrease in intermolecular forces.
In-other-words, more branches compound has less boiling point whereas fewer branches compound has more boiling point.