Question

Which among the following has highest boiling point?

• A. $C{H}_{3}C{H}_{2}C{H}_{2}C{H}_{2}Cl$
• B. $(C{H}_3{)}_{2}CHC{H}_{2}Cl$
• C. $(C{H}_3{)}_{3}C-Cl$
• D. None of the above

Answer 1

The correct option is A $C{H}_{3}C{H}_{2}C{H}_{2}C{H}_{2}Cl$

Boiling point $\propto$ surface area $\propto \frac{1}{Branching}$

$C{H}_{3}C{H}_{2}C{H}_{2}C{H}_{2}Cl$ has no branching and the maximum number of carbon atoms in the chain. So it has the highest boiling point.
Option A is correct.