JEE Main 2026 · 5 Apr 2026 Shift 1

How many grams of residue is obtained by heating 2.76 g of silver carbonate? (Given : Molar mass of C, O and Ag are 12, 16 and 108 g mol⁻¹ respectively)

1. A1.08 g
2. B2.16 g
3. C3.24 g
4. D4.32 g

Arrange the following atomic orbitals of multi electron atoms in order of increasing energy.

1. An = 3, l = 2, m = +1
2. Bn = 4, l = 0, m = 0
3. Cn = 6, l = 1, m = 0
4. Dn = 5, l = 1, m = +1
5. En = 2, l = 1, m = +1 Choose the correct answer from the options given below:

Identify the correct statements from the following :

1. AHeisenberg uncertainty principle is applicable to electrons.
2. BThe size of 2pₓ orbital is less than the size of 3pₓ orbital.
3. CThe energy of 2s orbital of H atom is equal to the energy of 2s orbital of Li.
4. DThe electronic configuration of Cr is [Ar] 3d⁵ 4s¹ Choose the correct answer from the options given below:

What is the mole fraction of water in 10% by weight (w/w) of aqueous urea solution? [Given: Molar mass of H, O, C and N are 1, 16, 12 and 14 g mol⁻¹ respectively.]

1. A0.825
2. B0.032
3. C0.867
4. D0.967

M₃A₂ is a sparingly soluble salt of molar mass y g mol⁻¹ and solubility x g L⁻¹. The ratio of the molar concentration of the anion (A³⁻) to the solubility product of the salt is

1. A(1/54) · (y⁴/x⁴)
2. By⁵/(108x⁴)
3. C108 · (x⁵/y⁵)
4. D(1/108) · (y⁴/x⁴)

Arrange the following resultant mixtures in increasing order of their pH values

1. A10 mL 0.2 M Ca(OH)₂ + 25 mL 0.1 M HCl
2. B10 mL 0.01 M H₂SO₄ + 10 mL 0.01 M Ca(OH)₂
3. C10 mL 0.1 M H₂SO₄ + 10 mL 0.1 M KOH Choose the correct answer from the options given below:

First order gas phase reaction A → B + C pᵢ = initial pressure of gas A, pₜ = total pressure of the reaction mixture at time t Expression of rate constant (k) is

1. A(1/t) ln(pᵢ/(2pᵢ − pₜ))
2. B(1/t) ln(2pᵢ/(pᵢ − pₜ))
3. C(1/t) ln(pᵢ/(3pᵢ − 2pₜ))
4. D(1/t) ln(3pᵢ/(4pᵢ − pₜ))

Given below are two statements: Statement I: The correct order of electronegativity of fluorine, oxygen and nitrogen is F > O > N. Statement II: The oxidation state of oxygen in OF₂ is +2 and in Na₂O is −2. In the light of the above statements, choose the correct answer from the options given below

1. ABoth Statement I and Statement II are true
2. BBoth Statement I and Statement II are false
3. CStatement I is true but Statement II is false
4. DStatement I is false but Statement II is true