Phenol reacts with dilute nitric acid at room temperature to give mainly ____.
Correct answer B. A mixture of 2-nitrophenol and 4-nitrophenol
Explanation
The OH group is ortho and para directing and activating, so dilute HNO₃ is enough to nitrate phenol, giving 2-nitrophenol and 4-nitrophenol. Concentrated acid is needed to make 2,4,6-trinitrophenol.
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