GATE CY 2025 Paper 1 — page 7

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2025 Paper 1

Complete GATE CY 2025 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 19–21 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 7 of 22

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

Your answerChoose one option.

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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

Your answerChoose one option.

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The Vaska’s complex trans-IrCl(CO)(PPh₃)₂ shows a band at 1967 cm⁻¹ for the νCO stretching vibration in its infrared spectrum. The complex(es) that will show an increase in the νCO stretching vibration from 1967 cm⁻¹ is/are

Your answerSelect all correct options. You can choose more than one.

Diagram for Chemistry question 21 (figure 2)

Diagram for Chemistry question 21 (figure 3)

Diagram for Chemistry question 21 (figure 4)

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2025 · Paper 1

Question 19

Question 20

Question 21