Which among the following compounds does not show hydrogen bonding?

Given below are two statements:
Statement $I$: $o$-Nitrophenol is steam volatile due to intramolecular hydrogen bonding.
Statement $II$: $o$-Nitrophenol has a high melting point due to hydrogen bonding.
In the light of the above statements,choose the most appropriate answer from the options given below:

Explain why,in spite of having nearly the same electronegativity,oxygen forms hydrogen bonding while chlorine does not.

Out of the given two compounds,the vapour pressure of $B$ at a particular temperature is:

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: Dipole-dipole interactions are the only non-covalent interactions resulting in hydrogen bond formation.
Reason $R$: Fluorine is the most electronegative element and hydrogen bonds in $HF$ are symmetrical.

Orthophosphoric acid $(H_3PO_4)$ exhibits high viscosity due to: