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The increasing basicity order of the following compounds is : (A) CH 3 CH 2 NH 2 (B) CH 3 CH 2 NH | CH CH 3 2 (C) H 3 C– 3 3 CH N | CH − (D) H N Ph | CH 3 − −

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

Correct answer: (D) < (C) < (A) < (B)

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