JEE Mains JEE Advance BITSAT
JEE Advance | PYQ

Year

All years 2026 2025 2023 2021

In the following reaction sequence, \( Q \), \( R \), \( S \) and \( T \) are the major products.

The correct statement(s) about Q, R, S and T is(are)

For the following reaction scheme, percentage yields are given along the arrow:

\( x \) \( \text{g} \) and \( y \) \( \text{g} \) are mass of \( R \) and \( U \), respectively.
(Use: Molar mass (in \( \text{g mol}^{-1} \)) of \( \mathrm{H} \), \( \mathrm{C} \) and \( \mathrm{O} \) as \( 1 \), \( 12 \) and \( 16 \), respectively)
The value of \( y \) is ______.

The reaction sequence given below is carried out with \( 16 \) moles of \( X \). The yield of the major product in each step is given below the product in parentheses. The amount (in grams) of \( S \) produced is ________.

Use: Atomic mass (in amu): \( \mathrm{H=1, \ C=12, \ O=16, \ Br=80} \).

Natural rubber on complete ozonolysis \( \left(\mathrm{O_3/Zn - H_2O}\right) \) gives compound \( X \) as the major product. \( X \) gives positive iodoform and Tollen’s tests. \( X \) on heating with aqueous \( \mathrm{NaOH} \) gives \( Y \) as the major product. \( Y \) is:

In the following reactions, P, Q, R and S are the major products.

The correct statement(s) about P, Q, R and S is(are):

The List-II contains products obtained from the reaction of compounds in List-I with \( \mathrm{O_3} / \mathrm{Zn} - \mathrm{H_2O} \) followed by cyclization (via more stable enolate) in the presence of aqueous \( \mathrm{NaOH} \).
Match each entry in List-I with appropriate entry in List-II and choose the correct option.

In the reaction given below, the total number of atoms having \( \text{sp}^2 \) hybridization in the major product \( P \) is \( \_\_\_\_\_ \).

In the following reactions, P, Q, R and S are the manor products.

The correct statement about P, Q, R and S is:

Question 1 of 8Next →

JEE Advanced 2026 Paper - 1

In the following reaction sequence, \( Q \), \( R \), \( S \) and \( T \) are the major products.

The correct statement(s) about Q, R, S and T is(are)