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Topic Solubility
Asked 5 times across 3 UPSC exams over 38 years (1986–2024), peaking in 2021.
Key insights
- Most tested in CSE — 3 of 5 PYQs
- Most asked in 2021
- Recurs across 5 years (1986–2024)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CSE 1986 → GEO 2022 → CAPF 2024
How the concept evolved
Rising — more than half its appearances (3 of 5) 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.
CAPF2024
Water is a good solvent for dissolving ionic compounds because
- A It has a high specific heat
- B It has no colour
- C It has a high dipole moment ✓
- D It has a high boiling point
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
GEO2022
Which one of the following mixtures will not have uniform composition?
- A Oil in water ✓
- B Sulphur in carbon disulphide
- C Alcohol in water
- D Sugar in water
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
CSE2021
Water can dissolve more substances than any other liquid because
- A it is dipolar in nature ✓
- B it is a good conductor of heat
- C it has high value of specific heat
- D it is an oxide of hydrogen
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
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