Which of the following exhibits $\mathrm{H}$-bonding?

Which of the following compounds would have significant intermolecular hydrogen bonding?

$\mathrm{HF},{\mathrm{CH}}_3\mathrm{OH},{\mathrm{N}}_2{\mathrm{O}}_4,{\mathrm{CH}}_4$

Give the correct order of initials $\mathrm{T}$ or $\mathrm{F}$ for the following statements. Use $\mathrm{T}$ if statement is true and $\mathrm{F}$ if it is false.

${\mathrm{S}}_1:$ $\mathrm{HF}$ boils at a higher temperature than $\mathrm{HCl}$

${\mathrm{S}}_2:$ $\mathrm{HBr}$ boils at lower temperature than $\mathrm{HF}$

${\mathrm{S}}_3:$ Bond length of ${\mathrm{N}}_2$ is less than ${\mathrm{N}}_2^{+}$

${\mathrm{S}}_4:$ ${\mathrm{F}}_2$ has higher boiling point than ${\mathrm{Cl}}_2$