Organic Compounds Containing Nitrogen

The correct order of decreasing basic strength of the given amines is:

Answer (1)
Sol. Lower is the value of $\mathrm{pK}_{\mathrm{b}}$, higher is the basicity
Also aliphatic amines are stronger bases than aromatic amines.
$\mathrm{pK}_{\mathrm{b}}$ : Benzenamine > N-Methylaniline > Ethanamine > N-Ethylethanamine
Basic strength : N-Ethylethanamine > Ethanamine > N-Methylaniline > Benzenamine