JEE Main 2025 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 3 April 2025, Shift 2, Physics Q34

Question 34 of 75 in this shift, Physics question 9 of 25, Section A.

Pressure of an ideal gas, contained in a closed vessel, is increased by 0.4% when heated by

1^\circ

C. Its initial temperature must be:

(1) $250^\circ$ C
(2)2500 K
(3) $25^\circ$ C
(4)250 KOfficial answer

Official answer

Option 4

NTA final key.

Chapter: Kinetic Theory
Topic: Ideal Gas Laws
Idea tested: Gay-Lussac's Law

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.