JEE Main 2026 April 4 Shift 2 Chemistry Question Paper with Solutions PDF : Available Here

Question 1:

The correct order of total number of atoms present in

(A) 2 moles of cyclohexane

(B) 684 g of sucrose

(C) 90.8 L of dihydrogen at STP

is:

• (A) C \(>\) A \(>\) B
• (B) C \(>\) B \(>\) A
• (C) B \(>\) C \(>\) A
• (D) B \(>\) A \(>\) C

The species having identical radii according to the Bohr's theory are:

A. H (first orbit)

B. \( He^+ \) (first orbit)

C. \( He^+ \) (Second orbit)

D. \( Li^{2+} \) (first orbit)

E. \( Be^{3+} \) (Second orbit)

Choose the correct answer from the options given below:

• (A) A and C Only
• (B) A and E Only
• (C) B and E Only
• (D) C and D Only

Which of the following pictorial diagram most correctly represents the \( \pi^* \) (\( \pi \) - antibonding) molecular orbital between two atoms if the internuclear axis is taken to be in the z-direction ( \( \xrightarrow{z-axis} \) )?

• (A)
• (B)
• (C)
• (D)

At \( 27^\circ C \), 0.1 M, 1 L \( K_4[Fe(CN)_6] \) aqueous solution and 0.1 M, 1 L \( FeCl_3 \) aqueous solution are placed in a container separated by a semi permeable membrane AB. Assume complete dissociation of both the solutes. Which of the following statement is correct?

• (A) Blue color is formed on both sides.
• (B) Ionic solutes in aqueous solution can pass through semi-permeable membrane.
• (C) Solution on side 'y' is hypotonic.
• (D) To cause the reverse flow of solvent during osmosis, external pressure (any value) should be applied to side 'x'.

20 mL of a solution of acetic acid required 28.4 mL of 0.1 M NaOH for its neutralization. A solution (X) was prepared by mixing 20 mL of the above acetic acid and 14.2 mL of 0.1 M NaOH solution. What is the pH of the solution (X)? (\( pK_a \) value of acetic acid is 4.75).

• (A) 7.0
• (B) 4.75
• (C) 3.5
• (D) 4.82

Match the LIST-I with LIST-II:

• (A) A-III, B-I, C-II, D-IV
• (B) A-III, B-IV, C-I, D-II
• (C) A-III, B-IV, C-I, D-II
• (D) A-I, B-III, C-IV, D-II

The \( 1^{st} \) ionization enthalpy for Mg is +737 kJ/mol. The most probable estimated value of the \( 2^{nd} \) ionization enthalpy of Mg is _______ kJ/mol.

• (A) \( -906 kJ/mol \)
• (B) \( -856 kJ/mol \)
• (C) \( +1450 kJ/mol \)
• (D) \( +590 kJ/mol \)

The electronegativity of a group 13 element 'E' is same as that of Ge (on Pauling scale and upto one decimal point). The CORRECT statements about \( E^{3+} \) are:

A. It can act as a reducing agent.

B. It can act as an oxidizing agent.

C. \( E^{3+} \) is more stable than \( E^+ \).

D. The standard electrode potential value for \( E^{3+}/E \) is positive.

Choose the correct answer from the options given below:

• (A) A and C Only
• (B) B and C Only
• (C) B and D Only
• (D) A and D Only

Pairs of elements with the same number of electrons in their respective 4f orbital are

[Atomic number: Eu-63, Gd-64, Dy-66, Ho-67, Tm-69, Yb-70, Lu-71, Hf-72]

A. (Eu and Gd)

B. (Dy and Ho)

C. (Yb and Hf)

D. (Lu and Tm)

Choose the correct answer from the options given below:

• (A) B and C Only
• (B) A and B Only
• (C) A and D Only
• (D) A and C Only

Consider the metal complexes \( [Ni(en)_3]^{2+} \) (A), \( [NiCl_4]^{2-} \) (B) and \( [Ni(NH_3)_6]^{2+} \) (C). Choose the CORRECT option by considering the number of unpaired electrons present in (A), (B) and (C) respectively and the order of frequency of absorption.

• (A) 2, 2, 2 and (A) \(>\) (C) \(>\) (B)
• (B) 0, 2, 0 and (A) \(>\) (C) \(>\) (B)
• (C) 2, 2, 0 and (B) \(>\) (C) \(>\) (A)
• (D) 2, 2, 2 and (C) \(>\) (A) \(>\) (B)

Consider the following molecules/species:

The correct order of carbon - oxygen double bond length is :

• (A) \(x > y > z\)
• (B) \(y > z > x\)
• (C) \(z > x > y\)
• (D) \(x > z > y\)

Consider \(|x|\) is the difference in oxidation states of Mn in highest manganese fluoride and highest manganese oxide. The ions with \(|x|\) number of unpaired electrons from the following are:

A. \(Sc^{3+}\)

B. \(Zn^{2+}\)

C. \(V^{2+}\)

D. \(Fe^{2+}\)

E. \(Co^{2+}\)

Choose the correct answer from the options given below:

• (A) A and B Only
• (B) C, D and E Only
• (C) C and E Only
• (D) B and E Only

Three different reactions were started with identical initial concentration of reactants. Which of the following statement is correct regarding the given graph showing variation of reactant concentration with time?

• (A) The order of all the three reactions is same.
• (B) The rate constant of reaction 3 is larger than the rate constant of reaction 2 if the order of reaction is same for both.
• (C) The SI unit of rate constant of reaction 1 is \(s^{-1}\).
• (D) Thermal decomposition of HI on gold surface is an example of reaction 2.

Compound (X) [Phenylacetylene] is subjected to the sequence of reactions:



Molar mass of the major product (Y) formed is _______ \(g \cdot mol^{-1}\). (Given molar mass in \(g \cdot mol^{-1}\) C:12, H: 1, O: 16)

• (A) 90
• (B) 118
• (C) 160
• (D) 125

The following structures are:

• (A) enantiomers.
• (B) identical molecules.
• (C) diastereomers.
• (D) meso compounds.

The descending order of acidity among the following compounds is :

• (A) B \(>\) D \(>\) E \(>\) A \(>\) C
• (B) D \(>\) B \(>\) E \(>\) A \(>\) C
• (C) C \(>\) A \(>\) B \(>\) D \(>\) E
• (D) D \(>\) E \(>\) B \(>\) A \(>\) C

The strongest conjugate acid will result from:

• (A)
• (B)
• (C)
• (D) 7

A D-aldotetrose on oxidation with concentrated \(HNO_3\) resulted in optically inactive dicarboxylic acid. The structure of the D-aldotetrose is:

• (A)
• (B)
• (C)
• (D)

Among \(Fe^{3+}, Pb^{2+}, Cu^{2+}\) and \(Mn^{2+}\), identify the one that gets precipitated out while passing \(H_2S\) in presence of \(NH_4OH\) as group reagent. The highest possible oxidation state of the corresponding metal is:

• (A) +3
• (B) +4
• (C) +2
• (D) +7

Match the LIST-I with LIST-II:

• (A) A-III, B-I, C-IV, D-II
• (B) A-III, B-IV, C-I, D-II
• (C) A-I, B-III, C-II, D-IV
• (D) A-I, B-II, C-III, D-IV

If 3.365 g of ethanol (l) is burnt completely in a bomb calorimeter at 298.15 K, the heat produced is 99.472 kJ. The \(|\Delta H_f^\circ|\) of ethanol at 298.15 K is _______ \(\times 10^2\) kJ \(\cdot mol^{-1}\). (Nearest integer)

Given: Standard enthalpy for combustion of graphite = \(-393.5\) kJ \(\cdot mol^{-1}\)

Standard enthalpy of formation of water (l) = \(-285.8\) kJ \(\cdot mol^{-1}\)

Molar mass in \(g \cdot mol^{-1}\) of C, H, O are 12, 1 and 16 respectively

For the following reaction at 50 \(^\circ\)C and at 2 atm pressure,
\(2N_2O_5(g) \rightleftharpoons 2N_2O_4(g) + O_2(g)\)
\(N_2O_5\) is 50% dissociated. The magnitude of standard free energy change at this temperature is x.

x = _______ J \(\cdot mol^{-1}\) [Nearest integer].

Given : R = 8.314 J \(mol^{-1} K^{-1}\), \(\log 2 = 0.30, \log 3 = 0.48, \ln 10 = 2.303, ^\circ C + 273 = K\)

An electrochemical cell, consist of the following two redox couples, \(M^{x+}(aq)/M(s) [E_{red}^\circ = +0.15 V]\) and \(Fe^{3+}(aq)/Fe(s) [E_{red}^\circ = -0.036 V]\). The cell EMF (\(E_{cell}\)) is recorded to be 0.2057 V. If the reaction quotient of the electrochemical cell is found to be \(10^{-z}\), then the value of x is _________. (Nearest integer)

[Given : M is a p-block metal and \(\frac{2.303 RT}{F} = 0.059 V\)]

For a first order reaction \(A \to B\),

x = _______ min. (Nearest integer)

In sulphur estimation, \(2.0 \times 10^{-3}\) mol of an organic compound (X) (molar mass 76 \(g \cdot mol^{-1}\)) gave 0.4813 g of barium sulphate (molar mass 233 \(g \cdot mol^{-1}\)). The percentage of sulphur in the compound (X) is _______ \(\times 10^{-1}\) % (Nearest integer)