Alcohols have higher boiling point than alkanes.Why ?

Why do alcohols have higher boiling points than haloalkanes ?

Why do alcohols have higher boiling points than halo-alkanes of the same molecular mass ?

Why alcohols are higher boiling point than hydrocarbons of corresponding molecular masses ?

Why alcohols are higher boiling point compounds than hydrocarbons ethers and aldehydes of corresponding molecular masses but have low boiling point than corresponding acids ?

Why do primary amines have higher boiling point than tertiary amines?

Why has phenol, higher boiling point than toluene ?