In which of the following compounds does hydrogen bonding occur?

Select the compound from the following which dissolves in water.

At room temperature $H_2O$ is a liquid while $H_2S$ is a gas. The reason is

Among the common mineral acids,$H_2SO_4$ is less volatile due to

Which of the following molecules are expected to exhibit intermolecular $H$-bonding?
$(I)$ Acetic acid $(II)$ $o$-nitrophenol $(III)$ $m$-nitrophenol $(IV)$ $o$-boric acid
Select the correct alternative.

Which of the following molecules forms a linear polymeric structure due to hydrogen bonding?