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The correct increasing order fo basic strength for the following compound is: A. `III lt I lt II`B. `III lt II lt I`C. `II lt I lt III`D. `II lt III lt I`

Answer» Correct Answer - C
In general, electron - donating groups such as `- CH_(3)` increase the basic strength of aniline by decreasing the delocalization of lone pair of electrons on the `N` atom while electron - withdrawing groups such as `NO_(2) ` decrease the basic strength of aniline by increasing the delocalization of lone pair of electrons on the `N` atom. Thus, the correct order of basic strength is : `(II) lt (I) lt (III)`


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