1.

Arrange in the decreasing order of basic nature, a. i. Pyrrole ii. Pyridine ii. Aniline b. i. Diphenylamine ii. Aniline ii. Cyclohexyl amine c. i. p-Nitroaniline ii. Anilineiii. P-Methyl aniline.

Answer»

Solution :Pyridine GT Aniline gt Pyrrol.
In (I) , lone PAIR of(N) is not in delocalisation of`BAR(e)`.
In (II) and (III) lone pair of (N) is used in delocalisation of`pi bar(e)`.
But in (III), ` LP bar(e)`s on (N) are INVOLVED in aromatiocity , so it is less basic tha (II)
b. `(iii) gt (ii) (i)`
c. `(iii) gt (ii) gt (i) `


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