Home / Topic / Fluid mechanics
Topic Fluid mechanics
Asked 4 times in GEO over 3 years (2022–2025), peaking in 2022.
Key insights
- Most tested in GEO — 4 of 4 PYQs
- Most asked in 2022
- Recurs across 2 years (2022–2025)
Across exams
GEO · 4How the concept evolved
Rising — more than half its appearances (4 of 4) 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.
GEO2025
Why do we prefer to have a liquid and not a gas to be used as the fluid in a hydraulic machine?
- A Liquids are compressible while gases are not.
- B Liquids are nearly incompressible and transfer the pressure applied to them. ✓
- C Liquids are nearly incompressible and do not transfer the pressure applied to them.
- D Liquids are compressible and transfer the pressure applied to them.
✓ Correct answer: (B)
Science & Technology › Physics & Chemistry
GEO2022
Which one of the following is the conservation law from which the Bernoulli's equation for fluid flow is derived?
- A Conservation of momentum
- B Conservation of volume
- C Conservation of mass
- D Conservation of energy ✓
✓ Correct answer: (D)
Science & Technology › Physics & Chemistry
GEO2022
Which one of the following is the conservation law from which the equation of continuity for fluid flow is derived?
- A Conservation of momentum
- B Conservation of volume
- C Conservation of mass ✓
- D Conservation of energy
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
Study how UPSC repeats — not just the papers
₹199 / 1 year · Founding Member
Full access unlocks the three things no PYQ PDF gives you:
① Cross-exam learning — see the same idea recur across CSE, CAPF, CDS and NDA.
② Topic evolution — how each idea is framed, year by year.
③ Question intelligence — every PYQ + answer, linked to related concepts and similar questions.
e.g. Round Table Conference: CDS 2017 → CSE 2017 → … → CAPF 2024
15 days free, no card required — then ₹199 for 1 year.
Start your 15-day free trial →