Given below are two statements : Statement I : Crossed aldol condensation between two different aldehydes will always produce four different products. Statement II : When semicarbazide reacts with a mixture of benzaldehyde and acetophenone under optimum pH , it forms a condensation product with acetophenone only. In the light of the above statements, choose the correct answer from the options given below

Both Statement I and Statement II are false

Statement I is true but Statement II is false

Both Statement I and Statement II are true

Statement I is false but Statement II is true

Which among the following has highest boiling point?

$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CH}_2-\mathrm{OH}$

$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CH}_3$

$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CHO}$

$\mathrm{H}_5 \mathrm{C}_2-\mathrm{O}-\mathrm{C}_2 \mathrm{H}_5$

Aldehydes Ketones And Carboxylic Acids — JEE Main Previous Year Questions

257 solved PYQs · 2016–2026 · Chemistry

Solved PYQs: 257
Years covered: 2016–2026
Avg / year: ~23
Subject: Chemistry

How many JEE Main questions come from Aldehydes Ketones And Carboxylic Acids?

Aldehydes Ketones And Carboxylic Acids has contributed 257 questions to Joint Entrance Examination (Main) papers between 2016 and 2026 — an average of about 23 questions a year. That count is measured from EByAi’s bank of 55,289 JEE Main questions, not estimated from a syllabus. Every one of the 257 questions carries a written, step-by-step solution, and each is tagged to Aldehydes Ketones And Carboxylic Acids within Chemistry, so you can drill this chapter across every year at once instead of hunting through paper PDFs. Practising a chapter’s full PYQ history is the fastest way to learn the patterns examiners reuse.

Sample Aldehydes Ketones And Carboxylic Acids questions from real JEE Main papers

These are 5 real questions from the bank — exactly as asked, with the answer one tap away. All 257 Aldehydes Ketones And Carboxylic Acids questions (with full written solutions) are available in practice.

Question 1 · JEE Main 2026
Match List - I with List - II. List – I Reagents List – II Reaction Name (Involving aldehydes) A. H 2 , Pd–BaSO 4 B. SnCl 2 , HCl C. CrO 2 Cl 2 , CS 2 D. CO, HCl, Anhyd. AlCl 3 I. Etard Reaction II. Rosenmund Reduction III. Gattermann–Koch Reaction IV. Stephen Reaction Choose the correct answer from the options given below :
1. (A) $A-II, B-III, C-IV, D-I$
2. (B) $A-IV, B-III, C-I, D-II$
3. (C) $A-IV, B-I, C-II, D-III$
4. (D) $A-II, B-IV, C-I, D-III$
Show answerAnswer
$Answer: (D) A-II, B-IV, C-I, D-III$
Question 2 · JEE Main 2026
Given below are two statements : Statement I : Crossed aldol condensation between two different aldehydes will always produce four different products. Statement II : When semicarbazide reacts with a mixture of benzaldehyde and acetophenone under optimum pH , it forms a condensation product with acetophenone only. In the light of the above statements, choose the correct answer from the options given below
1. (A) $Statement I is true but Statement II is false$
2. (B) $Both Statement I and Statement II are false$
3. (C) $Both Statement I and Statement II are true$
4. (D) $Statement I is false but Statement II is true$
Show answerAnswer
$Answer: (B) Both Statement I and Statement II are false$
Question 3 · JEE Main 2025
Number of molecules from below which cannot give iodoform reaction is : Ethanol, Isopropyl alcohol, Bromoacetone, 2-Butanol, 2-Butanone, Butanal, 2-Pentanone, 3-Pentanone, Pentanal and 3-Pentanol.
1. (A) $4$
2. (B) $3$
3. (C) $5$
4. (D) $2$
Show answerAnswer
$Answer: (A) 4$
Question 4 · JEE Main 2025
Both acetaldehyde and acetone (individually) undergo which of the following reactions? A. Iodoform Reaction B. Cannizzaro Reaction C. Aldol Condensation D. Tollen's Test E. Clemmensen Reduction Choose the correct answer from the options given below:
1. (A) $C and E Only$
2. (B) $A, B and D Only$
3. (C) $A, C and E Only$
4. (D) $B, C and D Only$
Show answerAnswer
$Answer: (C) A, C and E Only$
Question 5 · JEE Main 2024
Which among the following has highest boiling point?
1. (A) $CH_{3} CH_{2} CH_{2} CH_{2} - OH$
2. (B) $CH_{3} CH_{2} CH_{2} CH_{3}$
3. (C) $CH_{3} CH_{2} CH_{2} CHO$
4. (D) $H_{5} C_{2} - O - C_{2} H_{5}$
Show answerAnswer
$Answer: (A) CH_{3} CH_{2} CH_{2} CH_{2} - OH$

Aldehydes Ketones And Carboxylic Acids questions by year

Year	Questions	Share of chapter questions
2026	34
2025	26
2024	31
2023	30
2022	30
2021	43
2020	23
2019	29
2018	7
2017	3
2016	1

Practise these 257 questions with solutions

Free to start — 25 past-year questions a day with full written solutions, no card needed.

Start Aldehydes Ketones And Carboxylic Acids practice free

FAQs

How many JEE Main questions have been asked from Aldehydes Ketones And Carboxylic Acids?

EByAi's bank holds 257 real JEE Main questions from Aldehydes Ketones And Carboxylic Acids, asked between 2016 and 2026 — about 23 per year on average. Every count is measured from actual papers, not estimated.

Is Aldehydes Ketones And Carboxylic Acids important for JEE Main?

257 questions over 11 papers make Aldehydes Ketones And Carboxylic Acids a high-weightage chapter in JEE Main Chemistry. The year-wise table above shows exactly how often it appears.

Can I solve Aldehydes Ketones And Carboxylic Acids PYQs online for free?

Yes. EByAi lets you solve JEE Main past-year questions in the browser with written solutions — free daily practice, no card needed.

More JEE Main Chemistry chapters

All JEE Main Chemistry chapters →JEE Main overview →