Most-Repeated UPSC Topics, 2015–2025
Across 11 UPSC Prelims papers (2015–2025), just 10 topics account for 43% of the paper. Modern India (History) leads with 91 questions, followed by Money and Banking (63) and Ancient Medieval (53). Full ranked list of the top 50 topics, plus what's trending up vs. down.
The 80/20 of UPSC Prelims
Out of roughly 100 questions per year and 1,109 total topic-tagged questions over 11 years, just 10 topics supply 43% of the paper. The next 10 add another ~21%. The long tail of 82+ topics combined accounts for less than a third.
If you're optimising for return on study hours — and as a UPSC aspirant, that is literally the job — the numbers are unambiguous: master the top 20 before you touch the long tail. Not because the tail is unimportant, but because the top 20 is where every year's paper is won or lost.
Top 50 topics, ranked
| # | Topic | Subject | Qs | Share | Years | Trend |
|---|---|---|---|---|---|---|
| 1 | Modern India | History | 91 | 8.2% | 11/11 | ↓ falling |
| 2 | Money and Banking | Economics | 63 | 5.7% | 11/11 | ↑ rising |
| 3 | Ancient Medieval | History | 53 | 4.8% | 11/11 | ↑ rising |
| 4 | Governance | Polity | 44 | 4.0% | 11/11 | ↑ rising |
| 5 | Ecosystem | Environment | 42 | 3.8% | 11/11 | ↓ falling |
| 6 | Economic Planning | Economics | 42 | 3.8% | 10/11 | ↓ falling |
| 7 | International Trade | Economics | 40 | 3.6% | 10/11 | — stable |
| 8 | Biodiversity | Environment | 36 | 3.2% | 11/11 | — stable |
| 9 | Physical Geography | Geography | 34 | 3.1% | 10/11 | ↑ rising |
| 10 | Agriculture | Economics | 31 | 2.8% | 11/11 | ↓ falling |
| 11 | Climate Change | Environment | 30 | 2.7% | 10/11 | — stable |
| 12 | Space and Defence | Science & Tech | 27 | 2.4% | 9/11 | ↑ rising |
| 13 | Human Health | Science & Tech | 26 | 2.3% | 9/11 | ↓ falling |
| 14 | Fundamental Rights | Polity | 25 | 2.3% | 9/11 | ↓ falling |
| 15 | Conservation | Environment | 23 | 2.1% | 10/11 | ↓ falling |
| 16 | Climatology | Geography | 21 | 1.9% | 9/11 | ↑ rising |
| 17 | Statutory Bodies | Polity | 20 | 1.8% | 10/11 | ↑ rising |
| 18 | Judiciary | Polity | 19 | 1.7% | 11/11 | ↓ falling |
| 19 | Settlements | Geography | 19 | 1.7% | 8/11 | ↑ rising |
| 20 | Digital and IT | Science & Tech | 18 | 1.6% | 8/11 | — stable |
| 21 | Environmental Issues | Environment | 17 | 1.5% | 10/11 | — stable |
| 22 | Basic Science | Science & Tech | 17 | 1.5% | 7/11 | ↑ rising |
| 23 | Energy Tech | Science & Tech | 16 | 1.4% | 8/11 | ↑ rising |
| 24 | Emerging Tech | Science & Tech | 15 | 1.4% | 6/11 | ↓ falling |
| 25 | Human Geography | Geography | 15 | 1.4% | 8/11 | ↑ rising |
| 26 | Population | Geography | 15 | 1.4% | 7/11 | ↑ rising |
| 27 | Executive | Polity | 14 | 1.3% | 9/11 | ↑ rising |
| 28 | India Water Resources | Geography | 14 | 1.3% | 8/11 | ↓ falling |
| 29 | Balance of Payments | Economics | 14 | 1.3% | 7/11 | ↓ falling |
| 30 | Ecology | Science & Tech | 13 | 1.2% | 7/11 | ↑ rising |
| 31 | Federalism | Polity | 13 | 1.2% | 8/11 | ↓ falling |
| 32 | Subsidies Welfare | Economics | 12 | 1.1% | 5/11 | ↓ falling |
| 33 | Legislature | Polity | 11 | 1.0% | 8/11 | ↑ rising |
| 34 | Biotechnology | Science & Tech | 11 | 1.0% | 7/11 | ↓ falling |
| 35 | Government Budget | Economics | 11 | 1.0% | 8/11 | ↑ rising |
| 36 | Food Production | Science & Tech | 8 | 0.7% | 6/11 | — stable |
| 37 | International Conventions | Environment | 7 | 0.6% | 5/11 | ↓ falling |
| 38 | Philosophy of Constitution | Polity | 7 | 0.6% | 6/11 | ↓ falling |
| 39 | Political Process | Polity | 6 | 0.5% | 6/11 | ↑ rising |
| 40 | Constitutional Bodies | Polity | 6 | 0.5% | 5/11 | ↓ falling |
| 41 | Hydrosphere | Geography | 6 | 0.5% | 5/11 | — stable |
| 42 | Geomorphology | Geography | 6 | 0.5% | 4/11 | ↑ rising |
| 43 | Atmosphere | Geography | 6 | 0.5% | 5/11 | — stable |
| 44 | Polity International Relations | Polity | 6 | 0.5% | 4/11 | ↑ rising |
| 45 | Industrial Policy | Economics | 6 | 0.5% | 5/11 | — stable |
| 46 | National Income Accounting | Economics | 5 | 0.5% | 2/11 | ↓ falling |
| 47 | Election System | Polity | 5 | 0.5% | 4/11 | — stable |
| 48 | India Population | Geography | 5 | 0.5% | 5/11 | ↑ rising |
| 49 | Scheduled Tribal Areas | Polity | 5 | 0.5% | 5/11 | ↑ rising |
| 50 | Poverty Inequality | Economics | 5 | 0.5% | 3/11 | — stable |
What's trending up
Topics flagged risingappeared more often in recent years than earlier. If you're optimising for 2026, weight these more than the raw count suggests:
- Money and Banking (Economics) — 63 Qs, appeared in 11 of 11 years.
- Ancient Medieval (History) — 53 Qs, appeared in 11 of 11 years.
- Governance (Polity) — 44 Qs, appeared in 11 of 11 years.
- Physical Geography (Geography) — 34 Qs, appeared in 10 of 11 years.
- Space and Defence (Science & Tech) — 27 Qs, appeared in 9 of 11 years.
- Climatology (Geography) — 21 Qs, appeared in 9 of 11 years.
What's trending down
Don't skip them — they still show up — but don't over-invest either. Recent years have weighted these less:
- Modern India (History) — 91 Qs, 11/11 years.
- Ecosystem (Environment) — 42 Qs, 11/11 years.
- Economic Planning (Economics) — 42 Qs, 10/11 years.
- Agriculture (Economics) — 31 Qs, 11/11 years.
- Human Health (Science & Tech) — 26 Qs, 9/11 years.
- Fundamental Rights (Polity) — 25 Qs, 9/11 years.
How to read this list
Count is the raw number of questions tagged to that topic across 11 years. Share is count divided by the total topic-tagged question pool — useful to compare topics across subjects. Years tells you whether a topic shows up every year (like Modern India, which hit 11/11) or only in bursts.
A topic with 30 questions spread across 11 years is structurally reliable — it'll almost certainly appear again. A topic with 30 questions concentrated in 4 years is lumpy: maybe a government initiative that was hot then cooled. Both matter; they just reward different study strategies.
What this list doesn't tell you
Frequency is the first filter, not the last. A topic that appears 50 times in easy form is not the same as one that appears 20 times in trap-heavy form. For the trap-density cut, see our trap pattern catalog (coming next) — or better, drill the topic and see which traps catch you in real questions.
Tagging is reviewed by UPSC aspirants and the PYQLabs community. Some topics overlap in reality (e.g. "Ecosystem" and "Biodiversity") — we keep them distinct where UPSC's framing does.