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Topic Chromatography
Asked 4 times across 4 UPSC exams over 7 years (2019–2026), peaking in 2019.
Key insights
- Most tested in CAPF — 1 of 4 PYQs
- Most asked in 2019
- Recurs across 3 years (2019–2026)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CAPF 2019 → CDS 2019 → NDA 2023 → GEO 2026
How the concept evolved
Rising — more than half its appearances (4 of 4) are since 2016.
Related concepts
Ideas UPSC tests alongside this one — keep exploring.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
GEO2026
The adsorbent used in chromatographic techniques is
- A mica
- B silica gel
- C clay
- D glass wool
Answer key not yet available (pending official release)
Science & Technology › Physics & Chemistry
NDA2023
Match List I with List II and select the correct answer using the code given below the Lists
| List I (Process) | List II (Separation method) |
|---|
| A. Separation of acetone and water from their mixture | 1. Chromatography |
| B. Separation of water and kerosene oil from their mixture | 2. Centrifugation |
| C. Separation of cream from milk | 3. Distillation |
| D. Separation of pigments from plant extract | 4. Separating Funnel |
Codes:
- A A-3 B-2 C-4 D-1
- B A-4 B-2 C-1 D-3
- C A-3 B-4 C-2 D-1 ✓
- D A-4 B-1 C-2 D-3
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
CAPF2019
The principle involved in paper chromatography is
- A Absorption
- B Partition ✓
- C Solubility
- D Volatility
✓ Correct answer: (B)
Science & Technology › Physics & Chemistry
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