Q. Which concept best explains that $o$-nitrophenol is more volatile than $p$-nitrophenol?
A) Resonance
B) Steric hinderance
C) Hydrogen bond
D) Hyperconjugation
Explanation
The correct answer is Option C: Hydrogen bond.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.