Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CDS2026
An X-ray beam can be deflected by :
- A An electric field
- B A magnetic field
- C An electric as well as a magnetic field
- D Neither an electric field nor a magnetic field ✓
✓ Correct answer: (D)
Science & Technology › Physics & Chemistry
CDS2024
X-rays can be used to
- inspect welded joints between two metal parts of a machine
- study structure of crystals. Select the answer
using the code given below :
- A 1 only
- B 2 only
- C Both 1 and 2 ✓
- D Neither 1 nor 2
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
Study how UPSC repeats — not just the papers
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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
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