$ \begin{array}{1 1}(a)\;\text{P-nitroaniline < P-bromo aniline < P-amino benzaldehyde}\\(b)\;\text{P-nitro aniline > P-amino benzaldehyde < P-bromo aniline}\\(c)\;\text{P-methyl aniline > P-chloroaniline > P-amino aceto phenone}\\(d)\;\text{P-amino acetophenone > P-chloroaniline > p-methyl aniline}\end{array}$
