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Question 770008
JEE Chemistry · Medium

Hydrocarbons: Directing effects MCQ

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Directing effectsMediumQuestion 770008

Question

In EAS, −OH group is an ortho/para director because:
  1. A
    +M effect increases electron density at o and p positions
    Correct
  2. B
    −I effect withdraws electrons from m position
  3. C
    OH is a meta director by +I
  4. D
    It has no effect

Correct answer

+M effect increases electron density at o and p positions

Explanation

−OH group shows +M effect: lone pair on O donates into the ring via resonance, increasing electron density at ortho and para positions. Electrophiles attack electron-rich positions → o/p products predominate.

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