The alcohols form strong hydrogen bonds because the $O-H$ bond is very polar, amines form weak hydrogen bonds, alkanes present only minimal van der Waals attractions.
As for alkanes, volatility of alcohols and amines decreases with molar mass, because larger molecules are more inert
Interpret the following table:
The number of hydrogen bonds is greater for primary amines than for secondary amines. Tertiary amines can not form hydrogen bonds.
