Contrary to other hydrogen halides,hydrogen fluoride is a liquid because

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.

Which of the following does not have $H$-bonding?

Which of the following hydrogen bonds is the strongest?

Which of the following is the correct order of increasing enthalpy of vaporization for the given hydrides?

The pair likely to form the strongest hydrogen bonding is