Which one of the following does not have intermolecular hydrogen bonding?

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

Assertion : Boiling point of $p$-nitrophenol is higher than that of $o$-nitrophenol.
Reason : $p$-nitrophenol has intermolecular hydrogen bond whereas $o$-nitrophenol has intramolecular hydrogen bond.

Which of the following explains the viscous nature of glycerol?

Which of the following molecules can form hydrogen bonding with itself?

The boiling point of glycerol is higher than that of propanol because of: