1
JEE Advanced 2026 Paper 2 Online
MCQ (More than One Correct Answer)
+4
-1

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

JEE Advanced 2026 Paper 2 Online Chemistry - Compounds Containing Nitrogen Question 1 English

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

A

Q on treatment with ethanol generates an aromatic aldehyde.

B

S gives positive phthalein dye test.

C

P is a dinitro compound.

D

T is a coloured compound.

2
JEE Advanced 2026 Paper 2 Online
MCQ (More than One Correct Answer)
+4
-1

The correct statement(s) regarding sugars is(are) :

A

On treatment with HNO3, gluconic acid is oxidized to saccharic acid, whereas glucose is not oxidized to saccharic acid.

B

Fructose gives a positive Fehling’s test because it isomerises to glucose and another aldohexose in the presence of Fehling’s reagent.

C

Invert sugar is an equimolar mixture of D-glucose and D-fructose formed after hydrolysis of the corresponding disaccharide.

D

Specific rotation of invert sugar is −40°.

3
JEE Advanced 2026 Paper 2 Online
Numerical
+4
-0
$\mathbf{X}^{\boldsymbol{a}+}$ and $\mathbf{Y}^{\boldsymbol{b}+}$ are hydrogen-like species. The wavelength of light absorbed during the transition between the states with principal quantum numbers $n=1$ and $n=2$ of $\mathbf{X}^{\boldsymbol{a}+}$ is $\lambda$. The wavelength of light absorbed during the transition between the states with principal quantum numbers $n=2$ and $n=4$ of $\mathbf{Y}^{\boldsymbol{b}+}$ is $9 \lambda$. The lowest possible value of $(\boldsymbol{a}+\boldsymbol{b})$ is $\_\_\_\_$ .
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4
JEE Advanced 2026 Paper 2 Online
Numerical
+4
-0

At a given temperature, 0.45 g of acetic acid in 50 mL of water is shaken with 1.0 g of charcoal and the pH of the resulting solution is 3.0 . Assume, the adsorption of acetic acid from the aqueous solution by charcoal follows Freundlich isotherm,

$$ \frac{x}{m}=k C^{1 / n} $$

If the plot of $\log _{10}(x / m)$ against $\log _{10} C$ gives a straight line with slope 1 , the value of $k$ in $\mathrm{L} \mathrm{mol}^{-1}$ is $\_\_\_\_$ .

Given: The molar mass of acetic acid is $60 \mathrm{~g} \mathrm{~mol}^{-1}$.

The acid dissociation constant of acetic acid is $1.0 \times 10^{-5}$ at the given temperature.

$x$ is the mass (in grams) of acetic acid adsorbed.

$m$ is the mass (in grams) of charcoal.

$C$ is the equilibrium concentration of acetic acid in the solution after the adsorption is complete.

$k$ and $n$ are constants for acetic acid-charcoal system at the given temperature.

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