Hydrogen bond energy is equal to

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.

Why is $H_2O$ a liquid and $H_2S$ a gas?

The number of $H_2O$ molecules participating in hydrogen bonding in $CuSO_4 \cdot 5H_2O$ is/are

Which of the following compounds can form $H$-bonding with each other?

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