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The increasing order of reactivity of the following compounds towards reaction with alkyl halides directly is- (A) NH 2 O (B) NH O O (C) NH 2 CN (D) NH 2

1. B < A < C < D
2. A < C < D < B
3. A < B < C < D
4. B < A < D < C

Correct answer: B < A < C < D

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