JEE Main 2026 · 4 Apr 2026 Shift 2

The correct order of total number of atoms present in

1. A2 moles of cyclohexane
2. B684 g of sucrose
3. C90.8 L of dihydrogen at STP is:

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

1. AH (first orbit)
2. BHe⁺ (first orbit)
3. CHe⁺ (Second orbit)
4. DLi²⁺ (first orbit)
5. EBe³⁺ (Second orbit). Choose the correct answer from the options given below:

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)? (pKₐ value of acetic acid is 4.75).

1. A7.0
2. B4.75
3. C3.5
4. D4.82

The 1st ionization enthalpy for Mg is +737 kJ/mol. The most probable estimated value of the 2nd ionization enthalpy of Mg is ________.

1. A−906 kJ/mol
2. B−856 kJ/mol
3. C+1450 kJ/mol
4. 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 E³⁺ are

1. AIt can act as a reducing agent.
2. BIt can act as an oxidizing agent.
3. CE³⁺ is more stable than E⁺.
4. DThe standard electrode potential value for E³⁺/E is positive. Choose the correct answer from the options given below:

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]

1. A(Eu and Gd)
2. B(Dy and Ho)
3. C(Yb and Hf)
4. D(Lu and Tm). Choose the correct answer from the options given below:

Consider the metal complexes [Ni(en)₃]²⁺ (A), [NiCl₄]²⁻ (B) and [Ni(NH₃)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.

1. A2, 2, 2 and (A) > (C) > (B)
2. B0, 2, 0 and (A) > (C) > (B)
3. C2, 2, 0 and (B) > (C) > (A)
4. D2, 2, 2 and (C) > (A) > (B)

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:

1. ASc³⁺
2. BZn²⁺
3. CV²⁺
4. DFe²⁺
5. ECo²⁺. Choose the correct answer from the options given below: