NEET UG 2019 · Physics · Question 40
NEET 2019 Physics, question 40
Question 40 of the NEET 2019 paper (code P1) is a Physics question from Thermodynamics. Its idea, First Law in Adiabatic Processes, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 2.
Updated 2026-10-08
Q40 · Physics
In which of the following processes, heat is neither absorbed nor released by a system ?
- 1isothermal
- 2adiabaticOfficial answer
- 3isobaric
- 4isochoric
Official answer: option 2 · NTA final answer key
Same idea
The only question on First Law in Adiabatic Processes
No other NEET paper from 2017–2026 tested this exact idea.
First Law in Adiabatic Processes: every question and how it was framed
The chapter
Thermodynamics in ten years of NEET
32 questions from 2017–2026, asked in 10 of 10 papers, about 3.1 a paper. Laws of Thermodynamics alone had 10.