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Friday, 9 October

JEE Main 2025 · PhysicsMultiple choiceMatch the listMediumRecall

JEE Main 7 April 2025, Shift 1, Physics Q33

Question 33 of 75 in this shift, Physics question 8 of 25, Section A.

Match the LIST-I with LIST-I LIST-I | LIST-II A. Triatomic rigid gas | I. CpCv=53\frac{C_p}{C_v} = \frac{5}{3} B. Diatomic non-rigid gas | II. CpCv=75\frac{C_p}{C_v} = \frac{7}{5} C. Monoatomic gas | III. CpCv=43\frac{C_p}{C_v} = \frac{4}{3} D. Diatomic rigid gas | IV. CpCv=97\frac{C_p}{C_v} = \frac{9}{7} Choose the correct answer from the options given below:
  1. (1)A-III, B-II, C-IV, D-I
  2. (2)A-III, B-IV, C-I, D-IIOfficial answer
  3. (3)A-II, B-IV, C-I, D-III
  4. (4)A-IV, B-II, C-III, D-I

Official answer

Option 2

NTA final key.

Chapter
Thermodynamics
Topic
Kinetic Theory of Gases
Idea tested
Gamma and Degrees of Freedom

Same idea in other shifts

Asked 2× in all
  1. 5 Apr 2026, Shift 1 · Q32Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Statement I: Change in internal…MediumTwo statements

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.