Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CAPF2025
Which one among the following statements regarding gypsum is not correct?
- A On heating gypsum at 373 K, it loses water molecules and becomes CaSO4·1/2H2O.
- B On mixing with water, plaster of Paris changes to gypsum.
- C Plaster of Paris is used for supporting fractured bones.
- D Although gypsum possesses water of crystallization, it is not a liquid at room temperature.
Answer key not yet available (pending official release)
Science & Technology › Physics & Chemistry
CAPF2025
Match List-I with List-II and select the answer using the code given below the Lists
| List I (Compound) | List II (Chemical Formula) |
|---|
| A. Nitrolim | 1. CO(NH2)2 |
| B. Ammonium Nitrate | 2. KNO3 |
| C. Urea | 3. CaNCN |
| D. Potassium Nitrate | 4. NH4NO3 |
Codes:
- A A-1 B-4 C-3 D-2
- B A-3 B-4 C-1 D-2
- C A-3 B-2 C-1 D-4
- D A-1 B-2 C-3 D-4
Answer key not yet available (pending official release)
Science & Technology › Physics & Chemistry
CAPF2016
Which one of the following statements is not correct?
- A Bleaching powder is prepared by the action of Chlorine on dry slaked lime [Ca(OH)₂]
- B Bleaching powder acts as a reducing agent in many chemical industries ✓
- C Bleaching powder is also known as chlorinated lime
- D Bleaching powder is used for disinfecting drinking water
✓ Correct answer: (B)
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 →