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B
Nitrogen A is less basic than Nitrogen B.
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C
Nitrogen A is equally basic as Nitrogen B.
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D
Nothing can be said about basicity.
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Solution
The correct option is B Nitrogen A is less basic than Nitrogen B. Lone pair of Nitrogen A is involved in conjugation , and thus making the ring aromatic. So, it is not available for donation. Lone pair on Nitrogen B is not involed in resonance. So, Nitrogen A is less basic than Nitrogen B.