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Friday, 9 October

JEE Main Chemistry · Class 12

Aldehydes, Ketones and Carboxylic Acids: JEE Main previous year questions

Aldehydes, Ketones and Carboxylic Acids had 60 questions in the 42 JEE Main shifts Lumi analysed, about 1.4 a shift, asked in 39 of 42 shifts. It ranks 5 of 30 Chemistry chapters by questions; 13% of its questions were hard.

Questions
60
in 39 of 42 shifts
A shift, on average
1.4
of 25 Chemistry questions
Since 2024
-0.1
1.4 a shift in 2017–23, 1.4 in 2024–26
Numerical answer
6
10% of its questions

Year by year

How often it came

Questions in the analysed shifts of each year. Years differ in how many shifts Lumi analysed, so read the bars with the shift count.

Questions each year
07143’174’208’215’224’2314’2411’2511’26

2017: 1 shifts · 2020: 4 shifts · 2021: 4 shifts · 2022: 4 shifts · 2023: 4 shifts · 2024: 8 shifts · 2025: 8 shifts · 2026: 9 shifts

Difficulty by year
  • 20173
  • 20204
  • 20218
  • 20225
  • 20234
  • 202414
  • 202511
  • 202611
  • Easy
  • Medium
  • Hard

Inside the chapter

Topics and the ideas that repeat

12 topics and 34 distinct ideas; 12 ideas were asked more than once. Most questions are single correct and multi-step.

Topics, by questions

6 questions had no close topic in our taxonomy and are counted for the chapter only.

Ideas asked most
12 repeat

Study it on Lumi

Aldehydes, Ketones and Carboxylic Acids: the interactive lesson

Every question

All 60 Aldehydes, Ketones and Carboxylic Acids questions

Newest first. Each opens with its options and the official answer.

2026 11 questions

  1. 2 Apr 2026, Shift 2 · Q66An organic compound 'x' where molar ratio of C, O and H are equal, on treatment with 50% KOH under reflux followed by acidification…MediumSingle correct
  2. 2 Apr 2026, Shift 2 · Q67A molecule (X) with following structure under mild acidic condition is hydrolysed to produce (Y) and (Z). Identify the correct statements…MediumSingle correct
  3. 4 Apr 2026, Shift 1 · Q64An alkene (X) on ozonolysis followed by reduction gives following products. H−CHO\mathrm{H-CHO} (2 moles), OHC−CO−CHO\mathrm{OHC-CO-CHO}…HardDiagram basedHas a figure
  4. 5 Apr 2026, Shift 1 · Q64"P" is a hydrocarbon of molecular formula:- C8H14\mathrm{C_8H_{14}}. On ozonolysis, "P" forms "Q". "Q" on treatment with alkali under reflux…HardDiagram basedHas a figure
  5. 5 Apr 2026, Shift 2 · Q65Complete the following reaction sequence and give the name of major product 'P'. CH3CH2C≡N\mathrm{CH_3CH_2C{\equiv}N}…MediumSingle correctHas a figure
  6. 5 Apr 2026, Shift 2 · Q66Given below are two statements : Statement I : The condensation reaction between CH3−CH=O\mathrm{CH_3-CH=O} and H2N−NH−C(=O)−NH2\mathrm{H_2N-NH-C(=O)-NH_2}…MediumTwo statements
  7. 6 Apr 2026, Shift 1 · Q64Given below are two statements: Statement I: 2,6-diethylcyclohexanone and 6-methyl-2-n-propylcyclohexanone are metamers. Statement II:…MediumTwo statements
  8. 6 Apr 2026, Shift 2 · Q63Shown below is the structure of methyl acetate with three different α\alpha, β\beta and γ\gamma carbon - oxygen bonds. The correct…MediumDiagram basedHas a figure
  9. 6 Apr 2026, Shift 2 · Q64'xx' is the product which is obtained by the hydrolysis of prop-1-yne in the presence of mercuric sulphate under dilute acidic medium at…MediumSingle correct
  10. 8 Apr 2026, Shift 2 · Q67Consider the following reaction. [figure: N-substituted 2-piperidone (six-membered lactam, C=O adjacent to ring N) with N bonded to…HardDiagram basedHas a figure
  11. 8 Apr 2026, Shift 2 · Q72'xx' is the product which is obtained from benzene by reacting it with carbon monoxide and hydrogen chloride in the presence of cuprous…MediumNumerical value

2025 11 questions

  1. 2 Apr 2025, Shift 1 · Q67Consider the following molecules : (p) CH3−CH2−C(=O)−Cl\mathrm{CH_3-CH_2-C(=O)-Cl} (q) CH3−CH2−C(=O)−O−C(=O)−CH3\mathrm{CH_3-CH_2-C(=O)-O-C(=O)-CH_3} (r)…EasySingle correctHas a figure
  2. 2 Apr 2025, Shift 1 · Q68Given below are two statements : Statement (I) : Vanillin ([structure: benzene ring with -CHO, -OH para to CHO and -OCH3 ortho to OH])…MediumTwo statementsHas a figure
  3. 2 Apr 2025, Shift 2 · Q68Consider the following reactions. From these reactions which reaction will give carboxylic acid as a major product ? (A)…MediumOtherHas a figure
  4. 3 Apr 2025, Shift 1 · Q68Number of molecules from below which cannot give iodoform reaction is: Ethanol, Isopropyl alcohol, Bromoacetone, 2−-Butanol,…MediumSingle correct
  5. 3 Apr 2025, Shift 2 · Q68The major product (P) in the following reaction is : Ph−CO−CHO\mathrm{Ph{-}CO{-}CHO} →ΔKOH\xrightarrow[\Delta]{\mathrm{KOH}} P (Major Product)MediumDiagram basedHas a figure
  6. 4 Apr 2025, Shift 2 · Q67Which among the following compounds give yellow solid when reacted with NaOI/NaOH ? (A) CH3−CH(OH)−C2H5\mathrm{CH_3-CH(OH)-C_2H_5} (B)…EasyOther
  7. 7 Apr 2025, Shift 1 · Q68Which of the following compounds is least likely to give effervescence of CO2\mathrm{CO_2} in presence of aq. NaHCO3\mathrm{NaHCO_3} ?EasyDiagram basedHas a figure
  8. 7 Apr 2025, Shift 2 · Q66The number of optically active products obtained from the complete ozonolysis of the given compound is :…MediumOtherHas a figure
  9. 7 Apr 2025, Shift 2 · Q68"P" is an optically active compound with molecular formula C6H12O\mathrm{C_6H_{12}O}. When 'P' is treated with 2, 4-dinitrophenylhydrazine, it…MediumDiagram basedHas a figure
  10. 8 Apr 2025, Shift 2 · Q61Match the LIST-I with LIST-II LIST-I (Reagent) | LIST-II (Functional Group detected) A. Sodium bicarbonate solution | I. double bond/…MediumMatch the list
  11. 8 Apr 2025, Shift 2 · Q68When [structure: CH3C(=O)CH2CH2CH2CH2CHO\mathrm{CH_3C(=O)CH_2CH_2CH_2CH_2CHO}, a skeletal zigzag chain with a methyl ketone at one end and an aldehyde (C=O…MediumSingle correctHas a figure

2024 14 questions

  1. 6 Apr 2024, Shift 2 · Q78Consider the given reaction, identify the major product P. CH3−COOH\mathrm{CH_3-COOH}…MediumSingle correct
  2. 8 Apr 2024, Shift 1 · Q79Identify the product (P) in the following reaction: [figure: cyclopentanecarboxylic acid]…EasyDiagram basedHas a figure
  3. 8 Apr 2024, Shift 1 · Q89Major product B of the following reaction has _________ π\pi-bond. [figure: ethylbenzene (C6H5CH2CH3\mathrm{C_6H_5CH_2CH_3})]…MediumNumerical valueHas a figure
  4. 9 Apr 2024, Shift 1 · Q72[figure: benzene + succinic anhydride (cyclic five-membered anhydride) →AlCl3\xrightarrow{\mathrm{AlCl_3}} A…MediumSingle correctHas a figure
  5. 9 Apr 2024, Shift 1 · Q75Identify major product "X" formed in the following reaction : [figure: benzene…EasySingle correctHas a figure
  6. 9 Apr 2024, Shift 2 · Q77Which of the following compounds will give silver mirror with ammoniacal silver nitrate? A. Formic acid B. Formaldehyde C. Benzaldehyde D.…EasySingle correct
  7. 9 Apr 2024, Shift 2 · Q78Which of the following compound can give positive iodoform test when treated with aqueous KOH solution followed by potassium hypoiodite.MediumSingle correctHas a figure
  8. 9 Apr 2024, Shift 2 · Q79Major product of the following reaction is [figure: 4-cyanophenyl methyl ester, i.e. benzene ring with CN at one para position and…MediumSingle correctHas a figure
  9. 29 Jan 2024, Shift 1 · Q76The final product A formed in the following multistep reaction sequence isMediumDiagram basedHas a figure
  10. 29 Jan 2024, Shift 1 · Q90From the compounds given below, number of compounds which give positive Fehling's test is ________. Benzaldehyde, Acetaldehyde, Acetone,…MediumNumerical value
  11. 30 Jan 2024, Shift 2 · Q78m-chlorobenzaldehyde on treatment with 50% KOH solution yieldsEasyDiagram basedHas a figure
  12. 31 Jan 2024, Shift 1 · Q89The product of the following reaction is P. 4-Hydroxybenzaldehyde, (i) PhMgBr (1 equiv.), (ii) aq. NH4Cl\mathrm{NH_4Cl}, gives P The number…MediumNumerical valueHas a figure
  13. 31 Jan 2024, Shift 2 · Q77Identify major product 'P' formed in the following reaction. [reaction: benzene + benzoyl chloride (C6_6H5_5COCl) --(Anhydrous…EasyDiagram basedHas a figure
  14. 31 Jan 2024, Shift 2 · Q78Identify the name reaction. [reaction: benzene + CO, HCl --(anhydrous AlCl3_3/CuCl)--> benzaldehyde (C6_6H5_5CHO)]EasySingle correctHas a figure

2023 4 questions

  1. 6 Apr 2023, Shift 1 · Q77Match List I with List II LIST I (Name of reaction) | LIST II (Reagent used) A. Hell-Volhard-Zelinsky reaction | I. NaOH+I2\mathrm{NaOH + I_2}…MediumMatch the list
  2. 8 Apr 2023, Shift 2 · Q74The descending order of acidity for the following carboxylic acid is- A. CH3COOH\mathrm{CH_3COOH} B. F3C−COOH\mathrm{F_3C{-}COOH} C.…EasyOther
  3. 11 Apr 2023, Shift 1 · Q75[figure: 2-alkylcyclohexanone (R on the ring carbon adjacent to C=O, R = alkyl)] →KMnO4\xrightarrow{\mathrm{KMnO_4}} 'A' (Major Product)…HardDiagram basedHas a figure
  4. 13 Apr 2023, Shift 2 · Q77The major product for the following reaction is: CH2=CH−CN\mathrm{CH_2{=}CH{-}CN} + HO−CH2CH2−SH\mathrm{HO{-}CH_2CH_2{-}SH} (arrow)MediumSingle correctHas a figure

2022 5 questions

  1. 25 Jul 2022, Shift 1 · Q75Which one of the following reactions does not represent correct combination of substrate and product under the given conditions ?MediumDiagram basedHas a figure
  2. 25 Jul 2022, Shift 1 · Q90In the given reaction [cyclopentane ring bearing, on the same carbon, a CH3\mathrm{CH_3} group and a C(=O)OEt\mathrm{C(=O)OEt} group, and on the…HardNumerical valueHas a figure
  3. 24 Jun 2022, Shift 1 · Q74Two statements are given belwo : Statement I : The melting point of monocarboxylic acid with even number of carbon atoms is higher than…MediumTwo statements
  4. 24 Jun 2022, Shift 1 · Q75Which of the following is an example of conjugated diketone ?EasySingle correctHas a figure
  5. 29 Jun 2022, Shift 1 · Q75Given below are two statements : Statement I : The esterification of carboxylic acid with an alcohol is a nucleophilic acyl substitution.…MediumTwo statements

2021 8 questions

  1. 3 Aug 2021, Shift 2 · Q46Which one of the following reagents are not suitable for the preparation of benzaldehyde from benzene?MediumSingle correct
  2. 25 Jul 2021, Shift 1 · Q43[figure: but-3-en-2-one, CH2=CH-C(=O)-CH3, treated with (i) C2H5MgBr\mathrm{C_2H_5MgBr}, dry ether (ii) H2O\mathrm{H_2O}, HCl giving P (Major…HardSingle correctHas a figure
  3. 25 Jul 2021, Shift 1 · Q44[figure: 3,3-dimethylcyclopentanone (ketone C=O, gem-dimethyl on adjacent ring carbon) reacts with CH3CHO\mathrm{CH_3CHO}, NaOH to give 'P'…HardSingle correctHas a figure
  4. 16 Mar 2021, Shift 2 · Q45[figure: 3-methylanisole (benzene ring with CH3 and OCH3 meta to each other) --"A"--> 3-methoxybenzoic acid (benzene ring with COOH and…EasyDiagram basedHas a figure
  5. 16 Mar 2021, Shift 2 · Q46[figure: 2-substituted benzonitrile (benzene ring bearing CN and a CH(CH3)(OCH3) group ortho to each other)] reacts with (i)…MediumDiagram basedHas a figure
  6. 18 Mar 2021, Shift 1 · Q45[figure: cyclohexyl-C#N --(H2O/H+)--> "A" (Major Product) --(H2O/H+, heat)--> cyclohexyl-COOH] Consider the above chemical reaction and…EasyDiagram basedHas a figure
  7. 18 Mar 2021, Shift 1 · Q46[figure: p-methylanisole (benzene ring with CH3 at top and OCH3 at bottom, para) --(Alkaline KMnO4, then H+)--> "X"] Considering the above…EasyDiagram basedHas a figure
  8. 18 Mar 2021, Shift 1 · Q59__________ grams of 3-Hydroxy propanal (MW = 74) must be dehydrated to produce 7.8 g of acrolein (MW = 56) (C3H4O\mathrm{C_3H_4O}) if the…MediumNumerical value

2020 4 questions

  1. 8 Jan 2020, Shift 1 · Q39The most suitable reagent for the given conversion is :MediumSingle correctHas a figure
  2. 9 Jan 2020, Shift 2 · Q44In the following reaction A is : A…MediumSingle correctHas a figure
  3. 2 Sep 2020, Shift 1 · Q42The increasing order of the following compounds towards HCN addition is : (i) 3-methoxybenzaldehyde (H3CO\mathrm{H_3CO} meta to CHO) (ii)…MediumDiagram basedHas a figure
  4. 6 Sep 2020, Shift 2 · Q29The correct match between Item - I (starting material) and Item - II (reagent) for the preparation of benzaldehyde is : Item - I / Item -…EasyMatch the list

2017 3 questions

  1. 2 Apr 2017 (offline) · Q48Sodium salt of an organic acid 'X' produces effervescence with conc. H2SO4\mathrm{H_2SO_4}. 'X' reacts with the acidified aqueous…MediumSingle correct
  2. 2 Apr 2017 (offline) · Q59The correct sequence of reagents for the following conversion will be : [reaction: 4-formylcyclohexanone (ring bearing C=O at the top and…HardSingle correctHas a figure
  3. 2 Apr 2017 (offline) · Q60The major product obtained in the following reaction is : [reaction: bicyclic lactone (cyclopentene fused to a five-membered lactone, with…MediumSingle correctHas a figure

Pattern: Asked most years.