GATE CY year:2025 PYQs & Answers — Page 2

Questions 11–20 of 65. Imported answers require independent review unless marked reviewed.

Topic practice 65 questionsPage 2 of 7

The phospazene compound that acts as a superbase is

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Diagram for Chemistry question 11 (figure 2)

Diagram for Chemistry question 11 (figure 3)

Diagram for Chemistry question 11 (figure 4)

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The reaction for the synthesis of Me₂SiCl₂ through Rochow-Müller process is

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SiCl₄ + Me₂Zn

Si:Fe (9:1) + 2 MeCl

Si:Cu (9:1) + 2 MeCl

SiCl₄ + 2 MeMgBr

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Upon cooling from room temperature, the magnetic susceptibility of MnO slowly increases until 118 K, and then it decreases. This phenomenon is known as

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ferromagnetism

paramagnetism

antiferromagnetism

ferrimagnetism

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An aqueous solution of Co(ClO₄)₂·6H₂O is light pink in color. Addition of conc. HCl results in an intense blue colored solution due to the formation of a new species. The new species among the following is [Given: Atomic number of Co = 27]

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III

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For an unambiguous single step synthesis of the following target molecule (TM), the best bond disconnection in its retrosynthesis analysis is

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Diagram for Chemistry question 15 (figure 2)

Diagram for Chemistry question 15 (figure 3)

Diagram for Chemistry question 15 (figure 4)

Diagram for Chemistry question 15 (figure 5)

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In the

H-NMR spectrum of the following molecule, the signal of proton Hₐ appears as

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singlet

triplet

quintet

quartet

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A disaccharide X does NOT show mutarotation in aqueous solution. Acidic hydrolysis of X affords two different monosaccharides. The disaccharide X is

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Diagram for Chemistry question 17 (figure 2)

Diagram for Chemistry question 17 (figure 3)

Diagram for Chemistry question 17 (figure 4)

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The symmetry element that does NOT belong to

point group is

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Rigid rotor wavefunctions are given by

. The wavefunctions

and

are given below

For a non-polar diatomic molecule, the value of transition dipole moment integral for transition between

and

is equal to

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The translational, vibrational, and rotational molecular partition functions for a system containing ideal diatomic gas molecules in the canonical ensemble (N, V, T) are written as

, and

, respectively. The option that correctly defines their thermodynamic variable(s) dependency is

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GATE CY year:2025 PYQs

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20