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Thermodynamics

11 PYQ across 5 exams · 1986–2026 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

CSE 1986 → CDS 2017 → … → NDA 2025
19861 PYQ
CSEQ8
Which of the following statements is incorrect?…
20171 PYQ
CDSQ57
Joule-Thomson process is extremely useful and economical for attaining low temperature. The process can be categorized as…
20181 PYQ
CDSQ31
Which one of the following can extinguish fire more quickly?…
20191 PYQ
CDSQ79
Which of the following is/are state function/functions? 1. q + w 2. q 3. w 4. H - TS Select the correct answer using the code given below.…
20201 PYQ
CAPFQ22
Latent heat corresponds to the change in heat at constant…
20241 PYQ
GEOQ71
Molar heat capacity at constant pressure of a diatomic gas is 3·5 R, where R is universal gas constant. The gas is heated by providing energ…
20252 PYQs
CAPFQ109
The working principle of refrigerator is based on…
NDAQ140
A system that does NOT allow exchange of heat with its surrounding is called…
20263 PYQs
CDSQ12
Which one of the following gives the triple point of water ?…
NDAQ53
A solid of mass m has temperature-dependent specific heat as C(T) = C₀ + αT, where C₀ and α are constants. The solid is heated from T₁ to T₂…
NDAQ54
In a certain process, the relation between pressure (P) and volume (V), for an ideal gas, is given by PV² = constant. If the initial tempera…
Related concepts — explore their timelines too
Phase equilibriumHeatIdeal Gas
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