Sample questions
You've seen the pattern — here are a few of the actual PYQs.
NDA2025
Which one of the following particles in the nucleus of an atom was discovered by J. Chadwick?
- A Electron
- B Proton
- C Positron
- D Neutron ✓
✓ Correct answer: (D)
Science & Technology › Physics & Chemistry
NDA2020
Neutrons were discovered by
- A James Chadwick
- B Ernest Rutherford
- C J. J. Thomson ✓
- D John Dalton
✓ 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 →