NEET PhysicsNCERT Class 11Thermodynamics
Thermodynamics: NEET questions with solutions
NEET uses this chapter for the first law with correct signs, work in isothermal, adiabatic, isobaric and cyclic processes, C_p − C_v = R, the second-law statements and Carnot efficiency. Marks are lost on sign conventions in ΔQ = ΔU + ΔW, using °C in 1 − T₂/T₁, and treating heat or work as properties of a state.
Revise first: NCERT notes for ThermodynamicsQuestions
10 questions · answers after you pick
1A gas in a cylinder absorbs 500 J of heat and, at the same time, pushes a piston outward, doing 200 J of work on the surroundings. The…First law of thermodynamicsEasySingle correct2A Carnot engine works between a hot reservoir at 227 °C and a cold reservoir at 27 °C. Its efficiency isCarnot engineEasySingle correct3An ideal gas expands slowly while kept in contact with a large reservoir at a fixed temperature. Assess the Assertion (A) about where the…Quasi-static and isothermal processesEasyAssertion–Reason4Two moles of a rigid diatomic ideal gas are heated at constant pressure so that their temperature rises by 50 K. Take R = 8.31 J mol⁻¹ K⁻¹.…Specific heat capacityMediumSingle correct5One mole of an ideal gas at 300 K expands isothermally and reversibly from 10 L to 20 L. Take R = 8.31 J mol⁻¹ K⁻¹ and ln 2 = 0.693. The…Quasi-static and isothermal processesMediumSingle correct6A monatomic ideal gas at 300 K is compressed adiabatically and reversibly to one-eighth of its original volume. Its final temperature isAdiabatic processMediumSingle correct7An ideal gas is taken once round a rectangular cycle on a P–V diagram (P on the vertical axis) in the clockwise direction. The pressure…Isochoric, isobaric and cyclic processesMediumSingle correct8Which of the claims I to IV about the second law of thermodynamics, Carnot engines and the nature of heat are correct?Second law of thermodynamicsMediumStatement based9Two moles of a monatomic ideal gas expand adiabatically and reversibly, and the temperature falls from 400 K to 300 K. Take R = 8.31 J mol⁻¹…Adiabatic processHardSingle correct10A Carnot engine has an efficiency of 40% with its sink at 300 K. Keeping the sink temperature fixed, by how much must the source temperature…Carnot engineHardSingle correct
© 2026 Lumi (Aikolumi Software Pvt Ltd). Original questions written by Lumi. Free to view and practise on this site. Copying, republishing or reproducing these questions, options or solutions, in print or online, is not permitted.
Practising is step one. Knowing what to practise next is the hard part.
The Lumi app tracks every answer, finds the concepts you're losing marks on, and schedules your revision with FSRS before you forget.
Start learning free