JEE Main 2024 · PhysicsMultiple choiceSingle correctHardMulti-step

JEE Main 6 April 2024, Shift 1, Physics Q36

Question 36 of 90 in this shift, Physics question 6 of 30, Section A.

The specific heat at constant pressure of a real gas obeying

PV^2 = RT

equation is:

(1) $C_V + \frac{R}{2V}$ Official answer
(2) $C_V + R$
(3) $R$
(4) $\frac{R}{3} + C_V$

Official answer

Option 1

NTA final key.

Chapter: Thermodynamics
Topic: First Law of Thermodynamics
Idea tested: Mayer's Relation (Cp and Cv)

Same idea in other shifts

Asked 3× in all

2 Apr 2026, Shift 2 · Q485 moles of unknown gas is heated at constant volume from 10°C to 20°C. The molar specific heat of this gas at constant pressure $c_p = 8$ …MediumNumerical value
2 Apr 2017 (offline) · Q10 $C_p$ and $C_v$ are specific heats at constant pressure and constant volume respectively. It is observed that $C_p - C_v = a$ for hydrogen…EasySingle correct

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 108 of the 174 JEE Main shifts held from 2017 to 2026.