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Topic Calorimetry
Asked 2 times across 2 UPSC exams over 8 years (2018–2026), peaking in 2018.
Key insights
- Most tested in CDS — 1 of 2 PYQs
- Most asked in 2018
- Recurs across 2 years (2018–2026)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CDS 2018 → NDA 2026
How the concept evolved
Rising — more than half its appearances (2 of 2) are since 2016.
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.
NDA2026
A 5 g piece of ice at −20 °C is put into m kg of water at 30 °C temperature. The heat is exchanged only between the ice and the water. The final temperature of the mixture is 0 °C in liquid phase. What is the value of m in kg?
- A 0·050
- B 0·010
- C 0·015 ✓
- D 0·150
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
CDS2018
Which of the following represents a relation for 'heat lost = heat gained'?
- A Principle of thermal equilibrium
- B Principle of colors
- C Principle of calorimetry ✓
- D Principle of vaporization
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
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