Intramolecular hydrogen bonding is present in

The boiling point of $NH_3$ is much higher than that of $PH_3$ because.......

The boiling points of methanol,water,and dimethyl ether are respectively $65\,^{\circ}C$,$100\,^{\circ}C$,and $-24.8\,^{\circ}C$ (note: dimethyl ether is a gas at room temperature). Which of the following best explains these wide variations in boiling point $(b.p.)$?

In which of the following compounds does hydrogen bonding not play a role in its boiling point?

Consider the following statements:
$I.$ In gaseous phase,the vapour pressure of $CH_3COOH$ is less than expected.
$II.$ In benzene,acetic acid dimerises.
$III.$ $CH_3OH$ is more viscous than $H_2O$.
$IV.$ $CH_3OCH_3$ is non-polar but soluble in water.
Select the correct set of codes using $T$ for true and $F$ for false statements in the given sequence.

Acetic acid exists as a dimer in benzene due to