Aldehydes & Ketones JEE Main PYQs, 2021 to 2026

Aldehydes & Ketones questions per year

in the free PDF asked, not in the PDFThe PDF only has questions we can print in full with a checked answer, so it holds 11 of the 80 asked.

Topic-wise weightage by year

How many Aldehydes & Ketones questions each topic had in every JEE Main year (all shifts), counting every question asked, including ones not in the PDF. Darker cells mean more questions.

Swipe the table sideways for older years.

Newest questions (2026)

All 5 JEE Main 2026 Aldehydes & Ketones questions in the free PDF, latest shift first. The 2026 papers asked 34 in all.

1. JEE Main 2026 · 8 Apr · Shift 2 · Preparation of Aldehydes and Ketones

   ' $x$ ' is the product which is obtained from benzene by reacting it with carbon monoxide and hydrogen chloride in the presence of cuprous chloride. ' $y$ ' is the major product obtained from the benzene by reacting it with ethanoyl chloride in the presence of anhydrous ${\mathrm{AlCl}}_{3}$. Product (major) obtained by heating $x$ and $y$ in the presence of alkali is $z$. Total number of $\pi$ (pi) electrons in $z$ is $\_\_\_\_$ .

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2. JEE Main 2026 · 6 Apr · Shift 2 · Preparation of Aldehydes and Ketones

   An optically active alkyl bromide ${\mathrm{C}}_{4}{\mathrm{H}}_{9}{\mathrm{Br}}$, reacts with ethanolic KOH to form major compound $[{\mathrm{A}}]$ which reacts with bromine to give compound $[{\mathrm{B}}]$. Compound $[{\mathrm{B}}]$ reacts with ethanolic KOH and sodamide to give compound [C]. One molecule of water adds to compound [C] on warming with mercuric sulphate and dilute sulphuric acid at 333 K to form compound [D]. The functional group in compound D will be confirmed by :

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3. JEE Main 2026 · 6 Apr · Shift 1 · Preparation of Aldehydes and Ketones

   Given below are two statements :

   Statement I : 2, 6-diethylcyclohexanone and 6-methyl-2-n-propylcyclohexanone are metamers.

   Statement II : 2, 2, 6, 6 - tetramethylcyclohexanone exhibits keto-enol tautomerism.

   In the light of the above statements, choose the correct answer from the options given below

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4. JEE Main 2026 · 6 Apr · Shift 2 · Preparation of Aldehydes and Ketones

   ' $x$ ' is the product which is obtained by the hydrolysis of prop-1-yne in the presence of mercuric sulphate under dilute acidic medium at 333 K . ' $y$ ' is the product which is obtained by the reaction of ethane nitrile with methyl magnesium bromide in dry ether followed by hydrolysis. IUPAC name of product obtained from ' $x^{{'}}$ and ' $y$ ' in the presence of barium hydroxide followed by heating is :

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5. JEE Main 2026 · 24 Jan · Shift 2 · Preparation of Aldehydes and Ketones

   Grignard reagent ${\mathrm{RMgBr}}({\mathrm{P}})$ reacts with water and forms a gas $({\mathrm{Q}})$. One gram of Q occupies $1.4{\mathrm{dm}}^{3}$ at STP. (P) on reaction with dry ice in dry ether followed by ${\mathrm{H}}_{3}{\mathrm{O}}^{{+}}$forms a compound (Z). 0.1 mole of (Z) will weigh $\_\_\_\_$ g. (Nearest integer)

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Sample questions from recent papers

The free PDF above has all 11 questions grouped by topic, with an answer key.

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