Sample questions
You've seen the pattern — here are a few of the actual PYQs.
NDA2026
Consider the following statements
- Soaps are sodium or potassium salts of long-chain carboxylic acids
- The properties of catenation and isomerism in the element carbon are attributed to existence of large number of organic compounds than inorganic compounds
- Carbon dioxide is acidic but carbon monoxide is neutral molecule
Which of the statements given above are correct?
- A I and II only
- B II and III only
- C I and III only
- D I, II and III ✓
✓ Correct answer: (D)
Science & Technology › Physics & Chemistry
NDA2023
Which among the following statements with respect to carbon is/are correct ?
- Carbon forms the basis for all living organisms and many things we use
- Carbon shows tetra-valency and the property of catenation
- Carbon forms covalent bonds with itself and other elements
- Carbon forms compounds containing triple and tetra bonds between carbon atoms
Select the correct answer using the code given below :
- A 1 only
- B 1 and 2 only
- C 1, 2 and 3 ✓
- D 2 and 4
✓ 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 →