In which of the following is intermolecular $H$-bonding present?

In which of the following,intramolecular hydrogen bonding is present?

The maximum number of hydrogen bonds that a molecule of water can have is

Amongst $H_2O$,$H_2S$,$H_2Se$ and $H_2Te$,the one with the highest boiling point is:

The boiling points of $HF$, $HCl$, $HBr$ and $HI$ follow the order:

$Statement-1$: $p$-Hydroxybenzoic acid has a lower boiling point than $o$-hydroxybenzoic acid.
$Statement-2$: $o$-Hydroxybenzoic acid has intramolecular hydrogen bonding.