Question

Which one of the following gives only one monochloro derivative?

Options

• n-Hexane

• 2-Methylpentane

• 2, 3-Dimethylpentane

• neo-Pentane

Answer 1

neo-Pentane

Explanation:

Neo-pentane, \[\begin{array}{cc}
\phantom{...}\ce{CH3}\\
\phantom{}|\\
\ce{H3C - C - CH3}\\
\phantom{}|\\
\phantom{...}\ce{CH3}
\end{array}\] has only 1° hydrogen and hence gives only one monochloro derivative.