The increasing order of the acidity of the carboxylic acids is III < II < IV < I. In aromatic acids, electron withdrawing groups like Cl,−CN,−NO2 increases the acidity, whereas electron releasing groups like CH3,−OH,−OCH3,−NH2 decreases the acidity.
JEE Main 2018 — Chemistry Organic Chemistry
2018mcqmedium
The increasing order of the acidity of the following carboxylic acids is: 
Official previous-year question
Held on 15 Apr 2018 · Verified 6 Jul 2026.
Options
- A
III < II < IV < I
- B
I < III < II < IV
- C
IV < II < III < I
- D
II < IV < III < I
Did you get this right?
Sign in to track your attempts and accuracy.
Your note
Sign in to keep a private note on this question. Nothing you write is ever public.
JEE Main Organic Chemistry in other years
More JEE Main Organic Chemistry questions
Identify the correct statements. A. Arginine and Tryptophan are essential amino acids. B. Histidine does not contain heterocyclic ring in its structure. C. Proline is a six membered cyclic ring amino acid. D. Glycine does not have chiral centre. E. Cysteine has characteristic feature of side chain as $\mathrm{MeS}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-$. Choose the correct answer from the options given below :
2026medium
The correct statements are : A. Activation energy for enzyme catalysed hydrolysis of sucrose is lower than that of acid catalysed hydrolysis. B. During denaturation, secondary and tertiary structures of a protein are destroyed but primary structure remains intact. C. Nucleotides are joined together by glycosidic linkage between $\mathrm{C}_{1}$ and $\mathrm{C}_{4}$ carbons of the pentose sugar. D. Quaternary structure of proteins represents overall folding of the polypeptide chain. Choose the correct answer from the options given below :
2026medium
From the given following (A to D) cyclic structures, those which will not react with Tollen's reagent are : 
2026medium
Given below are two statements: Statement I: Sucrose is dextrorotatory. However, sucrose upon hydrolysis gives a solution having mixture of products. This solution shows laevorotation. Statement II: Hydrolysis of sucrose gives glucose and fructose. Since the laevorotation of glucose is more than the dextrorotation of fructose, the resulting solution becomes laevorotatory. In the light of the above statements, choose the correct answer from the options given below
2026medium
The number of possible tripeptides formed involving alanine (ala), glycine (gly) and valine (val), where no amino acid has been used more than once is:
2026easy
Other Chemistry topics for JEE Main
Keep practicing Organic Chemistry
Work through every JEE Main Organic Chemistry PYQ, year by year.