Example 1 · difficulty 1/5
For a fixed amount of an ideal gas undergoing an isothermal process, what is the change in internal energy?
- A. Zero
- B. Negative for expansion
- C. Positive for expansion
- D. Equal to the pressure change
2025 source guide · Physics
NEET 2025 Physics Thermodynamics Questions
Connect the official 2025 paper with current Physics practice without labelling original previews as PYQs.
200 original questions · explicit provenance labels
PhysicsPlate 39
NeetVellum atlas · fig. physics
39
What to master
state variables, heat, work, thermodynamic processes and heat engines.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 2/5
An ideal gas expands isothermally and does 800 J of work. How much heat does it absorb?
- A. 0 J
- B. 800 J
- C. 400 J
- D. 1600 J
Example 3 · difficulty 1/5
Which defining condition applies to an adiabatic process?
- A. Temperature remains constant
- B. Pressure remains constant
- C. No heat is exchanged with the surroundings
- D. Internal energy remains constant
The evidence-first practice loop
- 1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
- 2. Attempt closed-bookExpose the concept or execution gap before rereading.
- 3. Repair and returnClassify the miss and re-practice after a delay.
Canonical chapter practice
Frequently asked questions
Are these official NEET 2025 Physics Thermodynamics PYQs?
No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.
How should I use the NEET 2025 paper?
Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.