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Friday, 9 October

JEE Main 2026 · PhysicsMultiple choiceOtherMediumConceptual

JEE Main 5 April 2026, Shift 1, Physics Q33

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

Consider the following statements: A. Zeroth law of thermodynamics gives concept of temperature B. First law of thermodynamics gives concept of internal energy C. In isothermal expansion of ideal gas, ΔQ≠ΔW\Delta Q \neq \Delta W D. Product of intensive and extensive variables is extensive E. The ratio of any extensive variable to mass will be an extensive variable Choose the correct combination of statements from the options given below:
  1. (1)C, D and E Only
  2. (2)A, B and C Only
  3. (3)A, B and D OnlyOfficial answer
  4. (4)B, C and D Only

Official answer

Option 3

NTA final key.

Chapter
Thermodynamics
Topic
First Law of Thermodynamics
Idea tested
State vs. Path Functions

Same topic in other shifts

All First Law of Thermodynamics questions
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  2. 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 cp=8c_p = 8…MediumNumerical value
  3. 6 Apr 2026, Shift 1 · Q50A certain gas is isothermally compressed to (13)rd\left(\frac{1}{3}\right)^{\mathrm{rd}} of its initial volume (V0=3V_0=3 litre) by applying…MediumNumerical value
  4. 6 Apr 2026, Shift 2 · Q35If 2 mole of an ideal monoatomic gas at temperature TT, is mixed with 6 mole of another ideal monoatomic gas at temperature 2T2T then the…EasySingle correct
  5. 8 Apr 2026, Shift 2 · Q35One mole of diatomic gas having rotational modes only is kept in a cylinder with a piston system. The cross-section area of the cylinder…MediumSingle correct
  6. 8 Apr 2026, Shift 2 · Q36Initial pressure and volume of a monoatomic ideal gas are PP and VV. The change in internal energy of this gas in adiabatic expansion to…MediumSingle 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 42 of the 174 JEE Main shifts held from 2017 to 2026.