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Topic Absolute zero
Asked 2 times across 2 UPSC exams over 29 years (1992–2021), peaking in 1992.
Key insights
- Most tested in CSE — 1 of 2 PYQs
- Most asked in 1992
- Recurs across 2 years (1992–2021)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CSE 1992 → NDA 2021
How the concept evolved
Long-running — most appearances (1 of 2) predate 2016, and it still returns.
Related concepts
Ideas UPSC tests alongside this one — keep exploring.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
NDA2021
Which one of the following is the lowest possible temperature ?
- A 0° Celsius
- B – 073° Celsius
- C – 173° Celsius
- D – 273° Celsius ✓
✓ Correct answer: (D)
Science & Technology › Physics & Chemistry
CSE1992
The minimum possible temperature beyond which matter cannot be cooled is
- A 98.10° C
- B 100.00° C
- C 273.15° C ✓
- D 459.40° C
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
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