JEE Main 2026 April 6 Shift 1 Chemistry Question Paper with Solutions PDF : Available Here

Hydrolysis of sucrose follows 1st order kinetics to produce glucose and fructose. If \( t_{1/2} \) for decomposition of sucrose is 3 hr, find the % of sucrose left after 6 hr.

If at infinite dilution, molar conductivities of BaCl\(_2\), HCl and H\(_2\)SO\(_4\) are \( x_1 \), \( x_2 \), \( x_3 \) S cm\(^2\)mol\(^{-1}\) respectively, find solubility product of BaSO\(_4\).
Given \( K_{BaSO_4} \) (Specific conductance) = \( x \) S cm\(^{-1}\)

• (A) \(\left( \frac{x}{x_1 + x_3 - 2x_2} \right)^2 \times 10^6 \)
• (B) \(\left( \frac{x_1 + x_3 - 2x_2}{x} \right)^2 \times 10^6 \)
• (C) \(\left( \frac{x}{x_1 + x_3 - x_2} \right)^2 \times 10^3 \)
• (D) \(\left( \frac{x_1 + x_3 - x_2}{x} \right)^2 \times 10^6 \)

For given four processes compare magnitude of work:

• (A) \( |W_1| > |W_2| > |W_3| > |W_4| \)
• (B) \( |W_1| < |W_2| < |W_3| < |W_4| \)
• (C) \( |W_1| < |W_3| < |W_2| < |W_4| \)
• (D) \( |W_2| < |W_1| < |W_4| < |W_3| \)

A solution contains 0.25 moles of non-volatile solute dissolved in one mole of solvent. Then calculate the % vapor pressure of solution relative to the vapor pressure of pure solvent.

• (A) 20
• (B) 40
• (C) 60
• (D) 80

1 mole of He and 1 mole A are taken in a 10 L rigid container at 400 K, and equilibrium \( A \rightleftharpoons B \) is established. Calculate the partial pressure of He and B at equilibrium if \( K_c = 4 \).

• (A) 3.28 atm, 2.62 atm
• (B) 2.6 atm, 3.28 atm
• (C) 2.6 atm, 2.6 atm
• (D) 3.28 atm, 3.28 atm

An oxide of iron contains 69.9% iron. Find its empirical formula.
(Given: Atomic masses Fe = 56, O = 16)

• (A) \( Fe_3O_4 \)
• (B) \( Fe_2O_3 \)
• (C) \( FeO_3 \)
• (D) \( FeO \)

Column-I and Column-II are given below. Match the correct list:

• (A) P-(iv), Q-(iii), R-(ii), S-(i)
• (B) P-(iii), Q-(i), R-(ii), S-(ii)
• (C) P-(i), Q-(ii), R-(iii), S-(i)
• (D) P-(ii), Q-(i), R-(iv), S-(iii)

For the reversible reaction at 300 K, \( \Delta H^o = 28.4 \, KJ/mole \) and equilibrium constant \( K = 1.8 \times 10^{-7} \), then calculate the magnitude of \( \Delta S^o \) in Joule/K-mole.

[Given: log 2 = 0.3, \( \ln 10 = 2.3 \), \( R = 8.314 \, J/K.mole \), log 3 = 0.47]

If the minimum wavelength for H-atom in the Lyman series is 'x', then the maximum wavelength of the Balmer series of He\(^+\) ion in terms of 'x' will be:

• (A) \( \frac{3}{4} x \)
• (B) \( x \)
• (C) \( \frac{9x}{5} \)
• (D) \( \frac{5x}{9} \)

Find the correct order of increasing boiling point in the following given molecules:
(A) n-\( C_4 H_9 OH \)
(B) n-\( C_4 H_9 NH_2 \)
(C) n-\( C_4 H_{10} \)
(D) \( C_2 H_5 NH C_2 H_5 \)

• (A) C < D < B < A
• (B) A < B < D < C
• (C) D < C < A < B
• (D) B < C < D < A

Match disease with the deficiency.

• (A) A-R ; B-P ; C-S ; D-Q
• (B) A-P ; B-R ; C-S ; D-Q
• (C) A-S ; B-P ; C-R ; D-Q
• (D) A-R ; B-S ; C-P ; D-Q

Statement-I: Al is more electropositive than Tl because, \( E_0 \text{Al}^{3+}/\text{Al} \) is negative and \( E_0 \text{Tl}^{3+}/\text{Tl} \) is positive.
Statement-II: For B-atom; sum of first three ionization energies is very high, thus it forms covalent compounds.

• (A) Both statement-I & statement-II are correct
• (B) Both statement-I & statement-II are incorrect
• (C) Statement-I is correct but statement-II is incorrect
• (D) Statement-I is incorrect but statement-II is correct

Which of the following pair of species have different Lewis structures?
(A) \( \mathrm{SO_3^{2-}, CO_3^{2-}} \)
(B) \( \mathrm{O_2^{2-}, F_2} \)
(C) \( \mathrm{CN^- , CO} \)
(D) \( \mathrm{NH_3, H_3O^+} \)
(E) \( \mathrm{MnO_4^- , CrO_4^{2-}} \)

• (A) (A) only
• (B) (A) & (B) only
• (C) (A) & (E) only
• (D) (C) & (D) only

Consider the statements
(A) In Zeigler-Natta catalyst, d-block central metal ion has spin magnetic moment of 2.84 BM.
(B) In Zeigler-Natta catalyst, p-block element has +3 oxidation state.
(C) Basic vanadium oxide is used in the production of \( H_2SO_4 \).
(D) Catalyst used in Wacker's process has central metal with \(d^8\) configuration.

• (A) (A), (B) & (C) are correct
• (B) (B) & (D) are correct
• (C) (C) & (D) are correct
• (D) (B), (C) & (D) are correct

Find the correct order of increasing boiling point in the following given molecules:
(A) n-\( C_4 H_9 OH \) \hspace{1cm (B) n-\( C_4 H_9 NH_2 \)
(C) n-\( C_4 H_{10} \) \hspace{1cm (D) \( C_2 H_5 NH C_2 H_5 \)

• (A) C < D < B < A
• (B) A < B < D < C
• (C) D < C < A < B
• (D) B < C < D < A

Match disease with the deficiency.

• (A) A-R ; B-P ; C-S ; D-Q
• (B) A-P ; B-R ; C-S ; D-Q
• (C) A-S ; B-P ; C-R ; D-Q
• (D) A-R ; B-S ; C-P ; D-Q

Match with the tab test of amino acids.

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

‘X’ may be.

4.7 g of phenol \( \xrightarrow{Zn,\Delta} X \)
If the reaction goes to 60% yield of X, find the number of moles of ‘X’ formed.

Given below are two statements:
Statement-I: 2,4-Diethylcyclohexanone and 2-methyl-6-propylcyclohexanone are metameres.
Statement-II: 2,2,6,6-Tetraethylcyclohexanone will show tautomerism.
Choose the correct option:

• (A) Statement-I and Statement-II both are correct.
• (B) Statement-I and Statement-II both are incorrect.
• (C) Statement-I is correct but Statement-II is incorrect.
• (D) Statement-I is incorrect but Statement-II is correct.

Statement-I: 3-Phenylprop-1-ene will react with HBr and give alkyl halide as the major product having 1 chiral carbon atom.
Statement-II: Aryl chloride and Aryl cyanide both can be formed by Gattermann and Sandmeyer reactions.

• (A) Both Statement I and Statement II are incorrect.
  (B) Statement I is correct but Statement II is incorrect.
• (C) Statement I is incorrect but Statement II is correct.
• (D) Both Statement I and Statement II are correct.

Find the percentage of nitrogen in the final product.

Given below are two statements:
Statement-I: Methane can be prepared by decarboxylation of sodium acetate, by Kolbe’s electrolysis, and by \( CH_3MgBr \).
Statement-II: Methane can’t be prepared by unsaturated hydrocarbon and by Wurtz reaction.
Choose the correct option:

• (A) Statement-I and Statement-II both are correct.
• (B) Statement-I and Statement-II both are incorrect.
• (C) Statement-I is correct but Statement-II is incorrect.
• (D) Statement-I is incorrect but Statement-II is correct.