JEE Advanced 2026 - Paper 1

An ideal gas ($0.5$ mol), initially at $2$ bar pressure, is compressed at a constant temperature of $600$ K in two steps

For a reversible reaction $R \rightleftharpoons P$, at constant temperature, both the forward and the backward reactions

The correct order of dipole moments for the given species is

Considering $LiBH_4$ reduces an ester group to the corresponding alcohol and does not reduce a carboxylic acid group, th

The 2s and the 2p orbital energies of hydrogen atom are $E_{2s}(\text{H})$ and $E_{2p}(\text{H})$, respectively. The 2s

Correct statement(s) about the compounds $\mathbf{X}$, $\mathbf{Y}$ and $\mathbf{Z}$ is(are)

Reaction of $PtF_6$ with oxygen ($O_2$) gas results in the formation of an ionic compound, $X^+Y^-$. Correct statement(s

In the following reaction sequence, $Q, R, S$ and $T$ are the major products.

Two cylinders, both fitted with frictionless pistons, are filled with mixtures of He and Ar gases. In the first cylinder

The total number of all possible isomers for the square planar complex with formula $K[M(NCS)(NO_2)(gly)]$ is ____. ($M$

The sum of total number of carbonyl groups ($>C=O$) present in the major products X and Y in the following reactions is

Treatment of buta-1,3-diyne with $NaNH_2$ (2 equivalents), followed by reaction with excess of $trans-CH_3-CH=CH-CH_2-Br

List-I contains various physical/chemical processes, and List-II contains combinations of changes in enthalpy ($\Delta H

Consider the following species: $SOCl_2, XeOF_4, ClF_3, ClF_5, XeF_5^+, SO_3^{2-}, XeF_3^+, SF_4$

List-I contains diff

The List-II contains products obtained from the reaction of compounds in List-I with $O_3/Zn-H_2O$ followed by cyclizati

Match the major products obtained in the reactions given in List-I with the corresponding structures in List-II and choo