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Topic Floatation
Asked 2 times across 2 UPSC exams over 2 years (2023–2025), peaking in 2025.
Key insights
- Most tested in CDS — 1 of 2 PYQs
- Most asked in 2025
- Recurs across 2 years (2023–2025)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
NDA 2023 → CDS 2025
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.
CDS2025
A body floats in a liquid if the buoyant force is :
- A equal to its weight. ✓
- B less than its weight.
- C greater than its weight.
- D zero.
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
NDA2023
An iron nail sinks in water whereas an iron ship floats. Which of the following statements is correct in this regard ?
- Average density of ship is greater than that of the water
- Average density of iron nail is greater than that of the water
- Average density of the ship is less than that of the water
- Average density of the ship is equal to that of the water
Select the correct answer using the code given below :
- A 1 and 2
- B 2 and 3 ✓
- C 2 and 4
- D 1 and 4
✓ Correct answer: (B)
Science & Technology › Physics & Chemistry
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