Practicing Success

Target Exam

CUET

Subject

Chemistry

Chapter

Organic: Alcohols, Phenols and Ethers

Question:

Arrange the following compounds in increasing order of their acid strength:

(A) Propan-1-ol

(B) 3-nitrophenol

(C) 3,5-Dinitrophenol

(D) Phenol

(E) 4-Methylphenol

Choose the correct answer from the options given below:

Options:

A < D < C < B < E

C < B < D < E < A

A < B < C < D < E

A < E < D < B < C

Correct Answer:

A < E < D < B < C

Explanation:

Alcohols and phenols are electron-rich compounds and when any electron-withdrawing group is attached, their acidity increases. Alkyl groups show +I effect and -NO2 group show -M effect.

Acidic nature of electron-withdrawing groups are as follows:

Dinitro- > nitro > Phenyl > methyl > hydride