JEE Mains JEE Advance BITSAT
JEE Advance | PYQ

Year

All years 2026 2025 2024 2023 2022

Considering the reaction sequence given below, the correct statement(s) is(are):

Monocyclic compounds \( P \), \( Q \), \( R \) and \( S \) are the major products formed in the reaction sequences given below.

The product having the highest number of unsaturated carbon atom(s) is:

The sum of total number of carbonyl groups \( (> \mathrm{C} = \mathrm{O}) \) present in the major products \( X \) and \( Y \) in the following reactions is _____.

The major products obtained from the reactions in List-II are the reactants for the named reactions mentioned in List-I. Match List-I with List-II and choose the correct option.

The option(s) with correct sequence of reagents for the conversion of P to Q is(are):

The correct reaction/reaction sequence that would produce a dicarboxylic acid as the major product is:

In the following reaction sequence, major products \( X \) and \( Y \) are acyclic monomers.

\( 500 \) mol of \( X \) completely reacts with \( 500 \) mol of \( Y \) to give \( 1 \) mol of a single biodegradable acyclic copolymer \( Z \) as the only product. The amount of \( Z \) formed in grams is ________.
Given: Atomic mass (in amu): \( \mathrm{H:1, \; C:12, \; N:14, \; O:16, \; Br:80} \)

Consider the following reaction scheme and choose the correct option(s) for the major products \( Q \), \( R \) and \( S \).

Considering \( \mathrm{LiBH_4} \) reduces an ester group to the corresponding alcohol and does not reduce a carboxylic acid group, the correct statement about the major products \( P \), \( Q \), \( R \) and \( S \) is:

An organic compound P having molecular formula \( \mathrm{C}_{6}\mathrm{H}_{6}\mathrm{O}_{3} \) gives ferric chloride test and does not have intramolecular hydrogen bond. The compound P reacts with \( 3 \) equivalents of \( \mathrm{NH}_{2}\mathrm{OH} \) to produce oxime Q. Treatment of P with excess methyl iodide in the presence of \( \mathrm{KOH} \) produces compound R as the major product. Reaction of R with excess iso-butylmagnesium bromide followed by treatment with \( \mathrm{H}_{3}\mathrm{O}^{+} \) gives compound S as the major product.
The total number of methyl (\( -\mathrm{CH}_{3} \)) group(s) in compound S is______.

For the reaction sequence given below, the correct statement(s) is (are):

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JEE Advanced 2026 Paper - 1

The sum of total number of carbonyl groups \( (> \mathrm{C} = \mathrm{O}) \) present in the major products \( X \) and \( Y \) in the following reactions is _____.