A) phenol < p-ethoxyphenol < methanol
B) methanol < phenol < p-ethoxyphenol
C) methanol < p-ethoxyphenol < phenol
D) phenol < methanol < p-ethoxyphenol
Correct Answer: A
Solution :
[a] C-OH bond length in methanol, phenol and p-ethoxyphenol is least in phenol due to resonance and maximum in methanol due to Lack of resonance whereas it will have some intermediate value in p-ethoxyphenol. \[\therefore \] Correct increasing order is Phenol < p-ethoxyphenol < methanol
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