Question

Which of the following exists as a liquid at room temperature only due to the formation of associated hydrogen bonded molecules?

• A. Benzene
• B. Ammonium hydroxide
• C. Bromine
• D. Carbon disulphide

Answer 1

The correct option is B Ammonium hydroxide

Hydrogen bonding is possible when $H$ is bonded to highly electronegative atoms such as $N,O,F$. Among the given molecules only ammonium hydroxide $N{H}_{4}OH$ has $O$ while others do not contain elements like $N,O,F$.

Hence, option $B$ is correct.