Q. Among the following four compounds a. Phenol b. Methyl phenol c. Metanitrophenol d. Paranitrophenol The acidity order is
A) d > c > a > b
B) c > d > a > b
C) a > d > c > b
D) b > a > c > d
Explanation
[Solution from source] Electron-withdrawing –NO₂ increases acidity of phenol most from the para position (−R and −I), less from meta (−I only), while –CH₃ donates electrons and lowers acidity. So para-nitrophenol > meta-nitrophenol > phenol > methylphenol. Putting meta above para ignores the resonance effect. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.