Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CISF2026
Consider the following
- Ionic radius order : Na+ < Mg2+ < Al3+ < Si4+
- Atomic radius order : Si < Al < Mg < Na
- Effective nuclear charge : Na < Si < Mg < Al
Which of the above is/are correct?
- A 1 and 2
- B 2 and 3
- C 1 only
- D 2 only
Answer key not yet available (pending official release)
Science & Technology › Physics & Chemistry
CISF2026
Alkali metals react with water to promote H2(g) and metal hydroxides. Li floats and reacts slowly, whereas Cs reacts more vigorously. This is because of which one of the following properties?
- A Melting point
- B First ionization energy
- C Electronegativity
- D Electron affinity
Answer key not yet available (pending official release)
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 →