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Aniline dissolved in dilute HCl is reacted with sodium nitrite at 0ºC. This solution was added dropwise to a solution containing equimolar mixture of aniline and phenol in dil. HCl. The structure of the major product is

1. N = N OH
2. N = N NH 2
3. N = N – O
4. N = N – NH

Correct answer: N = N NH 2

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