Alcohols Phenols And Ethers Question 302

Question: Which of the following is most acidic

[CPMT 1999]

Options:

A) Phenol

B) Benzyl alcohol

C) m-chlorophenol

D) Cyclohexanol

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Answer:

Correct Answer: C

Solution:

Benzyl alcohol and cyclohexanol are not acidic while phenol and m-chlorophenol are acidic due to presence of electron withdrawing groups like $ -NO_2,-Cl,-CN $ increases the acidic character of phenols. Hence, m-chlorophenol is more acidic than phenol.