Which of the following compounds can form hydrogen bonds?

Ortho-nitrophenol is less soluble in water than $p-$ and $m-$nitrophenol because...

Which of the following compounds will have the maximum hydrogen bonding?

What is the maximum number of $H$-bonds that a single water molecule can form?

Structures of molecules of two compounds are given below:
$(a)$ Which of the two compounds will have intermolecular hydrogen bonding and which compound is expected to show intramolecular hydrogen bonding.
$(b)$ The melting point of a compound depends on,among other things,the extent of hydrogen bonding. On this basis,explain which of the above two compounds will show a higher melting point.
$(c)$ Solubility of compounds in water depends on the power to form hydrogen bonds with water. Which of the above compounds will form hydrogen bonds with water easily and be more soluble in it?

Identify the type of hydrogen bonding in the following substances: Ice,Water,Liquid Ammonia,$o$-Nitrophenol,$p$-Nitrophenol.