Ketones have higher boiling than aldehydes.Explain.

Alcohols have higher boiling point than alkanes.Why ?

Amines have higher boiling points than hydrocarbons of comparable molecular masses.

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

Why do alcohols have higher boiling points than haloalkanes ?

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

Account for the following : Nitro compounds have higher boiling points that the hydrocarbons having almost the same molecular mass.