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Match the column ( array |l|l|l|l| & Column-I & & Column-II & (Compound) & & (Pkb) (i) & N, N-Dimethyl aniline & (a) & 9.38 (ii) & Benzenamine & (b) & 8.92 (iii) & N-Methyl methanamine & (c) & 3.38 (iv) & Methanamine & (d) & 3.27 array ) Correct match is -

Options

  1. A(i) ( ) b, (ii) ( ) a, (iii) ( ) c, (iv) ( ) d
  2. B(i) ( ) c, (ii) ( ) d, (iii) ( a ), (iv) ( b )
  3. C(i) ( ) b, (ii) ( ) a, (iii) ( ) d, (iv) ( ) c
  4. D(i) ( ) d, (ii) ( ) a, (iii) ( ) c, (iv) ( ) b

Correct answer

C. (i) ( ) b, (ii) ( ) a, (iii) ( ) d, (iv) ( ) c

Step-by-step solution

( array |l|c|l|l| array l Column-I (Compound) array & array l Matched Pkb (Column-II) array & array l Strength order note array & array l Reason (one-line) array (i) N,N-Dimethyl aniline & (a) 9.38 & Weakest base (highest pKb) & array ll Lone pair delocalized into benzene ring; + steric hindrance very poor availability of lone pair. array (ii) Benzenamine (aniline) & (b) 8.92 & Weaker base & array ll Lone pair partly delocalized into aromatic ring (-R effect) reduced basicity (but stronger than N,N-dimethylaniline)

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