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Q.
The order of basicity among the following compounds is
NTA AbhyasNTA Abhyas 2022
Solution:
The conjugate acid is stabilized by resonance with two different $-NH_{2}$ group.
The conjugate acid is stabilized by resonance with one $-NH_{2}$ group and by hyper conjugation of $-CH_{3}$ group.
The conjugate acid is stabilized by resonance with only one $NH_{2}$ group.
(III) Least basic, as the LP is used in aromaticity.