Arrange the following in the order of decreasing basic character:
1. p-Toluidine
2. N,N-Dimethyl-p-toludine
3. p-Nitroaniline
4. Aniline

Q. Arrange the following as directed: (a) Increasing order of basic strength: Aniline, p – nitroaniline and p – toluidine. (b) Decreasing order of basic strength in gas phase: C2H5NH2, (C2H5)2NH, (C2H5)3N and NH3. (c) Increasing order of solubility in water: C6H5NH2, (C2H5)2NH, C2H5NH2.

Q. Arrange the following
(i) In decreasing order of the $p{K}_b$ values: $C_2{H}_{5}N{H}_2,C_6{H}_{5}NHC{H}_3,(C_2{H}_5{)}_{2}NH$ and $C_6{H}_{5}N{H}_2$
(ii) In increasing order of basic strength: $C_6{H}_{5}N{H}_2,C_6{H}_{5}N(C{H}_3{)}_2,(C_2{H}_5{)}_{2}NH$ and $C{H}_{3}N{H}_2$
(iii) In increasing order of basic strength:
(a) Aniline, p-nitroaniline and p-toluidine

Q. 41 Arrange in decreasing order of reacticity:- 1. Aromatic Aldehyde 2. Aliphatic Aldehyde 3. Aromatic Ketone 4. Aliphatic Ketone

Q. which of the following is most basic 1.Diphenylamine 2.Triphenyl amine 3.p-Nitroaniline 4.Benzylami

Q. Arrange the following in the order of decreasing basic character: