The PYQ Vault · 99 timed tests

UPSC Prelims mock tests from PYQs

Full papers, subject by subject, CSAT topic by topic — all from UPSC's own Prelims 2016–2026, timed and marked as in the exam. Your score the moment you submit.

The Vault has 99 free timed tests built only from UPSC's own questions: 11 full GS Paper I papers (2016–2026), 43 subject-wise sets covering all 1,091 scored GS Paper I questions, and 45 CSAT topic sets covering all 879 scored CSAT questions. Marking follows UPSC: +2 / −0.66 in GS Paper I, +2.5 / −0.83 in CSAT.

Updated 3 Oct 2026 · answers follow UPSC's official keys (provisional for 2026 until the final key).

New to PYQs? Take Prelims 2026 as a full test → 2 hours, exactly as UPSC set it. Revising a subject? Pick it in the table below → Sets of 25, 30 minutes each. CSAT worries you? Practise topic by topic → Sets of 20, a passage always whole.

Full papers, year by year

GS Paper I exactly as UPSC set it — 2 hours, +2 / −0.66. Read it with answers, take it as a test, or download it.

Year	Read with answers	Timed test	PDF	UPSC's paper & key
2026	Prelims 2026 →	Take the test	Download	Paper ↗ · Key ↗
2025	Prelims 2025 →	Take the test	Download	Paper ↗ · Key ↗
2024	Prelims 2024 →	Take the test	Download	Paper ↗ · Key ↗
2023	Prelims 2023 →	Take the test	Download	Paper ↗ · Key ↗
2022	Prelims 2022 →	Take the test	Download	Paper ↗ · Key ↗
2021	Prelims 2021 →	Take the test	Download	Paper ↗ · Key ↗
2020	Prelims 2020 →	Take the test	Download	Paper ↗ · Key ↗
2019	Prelims 2019 →	Take the test	Download	Paper ↗ · Key ↗
2018	Prelims 2018 →	Take the test	Download	Paper ↗ · Key ↗
2017	Prelims 2017 →	Take the test	Download	Paper ↗ · Key ↗
2016	Prelims 2016 →	Take the test	Download	Paper ↗ · Key ↗

Prelims GS Paper I, subject by subject

1,091 questions in 43 sets of about 25 (30 minutes each), mixed across topics and years. ✓ marks the sets you've done.

Ancient India47 questions

Set 1 Set 2
Medieval India27 questions

Set 1
Modern India & the freedom struggle71 questions

Set 1 Set 2 Set 3
Art & culture38 questions

Set 1 Set 2
Geography162 questions

Set 1 Set 2 Set 3 Set 4 Set 5 Set 6
Polity & governance150 questions

Set 1 Set 2 Set 3 Set 4 Set 5 Set 6
Economy & social development186 questions

Set 1 Set 2 Set 3 Set 4 Set 5 Set 6 Set 7
Environment & ecology155 questions

Set 1 Set 2 Set 3 Set 4 Set 5 Set 6
Science & technology122 questions

Set 1 Set 2 Set 3 Set 4 Set 5
International relations & current affairs133 questions

Set 1 Set 2 Set 3 Set 4 Set 5

Subject	Questions	Timed sets	All sets
Ancient India	47	Set 1 Set 2	Overview →
Medieval India	27	Set 1	Overview →
Modern India & the freedom struggle	71	Set 1 Set 2 Set 3	Overview →
Art & culture	38	Set 1 Set 2	Overview →
Geography	162	Set 1 Set 2 Set 3 Set 4 Set 5 Set 6	Overview →
Polity & governance	150	Set 1 Set 2 Set 3 Set 4 Set 5 Set 6	Overview →
Economy & social development	186	Set 1 Set 2 Set 3 Set 4 Set 5 Set 6 Set 7	Overview →
Environment & ecology	155	Set 1 Set 2 Set 3 Set 4 Set 5 Set 6	Overview →
Science & technology	122	Set 1 Set 2 Set 3 Set 4 Set 5	Overview →
International relations & current affairs	133	Set 1 Set 2 Set 3 Set 4 Set 5	Overview →

CSAT, topic by topic

879 questions in 45 sets of about 20 (30 minutes each) — a reading passage always with all its questions. CSAT is qualifying: 33%.

Reading comprehension299 questions

Set 1 Set 2 Set 3 Set 4 Set 5 Set 6 Set 7 Set 8 Set 9 Set 10 Set 11 Set 12 Set 13 Set 14 Set 15
Number system140 questions

Set 1 Set 2 Set 3 Set 4 Set 5 Set 6 Set 7
Arithmetic: percentage, ratio, averages, time & work132 questions

Set 1 Set 2 Set 3 Set 4 Set 5 Set 6 Set 7
Puzzles, arrangements & general mental ability113 questions

Set 1 Set 2 Set 3 Set 4 Set 5 Set 6
Logical & analytical reasoning68 questions

Set 1 Set 2 Set 3
Data interpretation & sufficiency58 questions

Set 1 Set 2 Set 3
Counting, permutations & probability43 questions

Set 1 Set 2
Geometry & mensuration20 questions

Set 1
Decision making & interpersonal skills6 questions

Set 1

Topic	Questions	Timed sets	All sets
Reading comprehension	299	Set 1 Set 2 Set 3 Set 4 Set 5 Set 6 Set 7 Set 8 Set 9 Set 10 Set 11 Set 12 Set 13 Set 14 Set 15	Overview →
Number system	140	Set 1 Set 2 Set 3 Set 4 Set 5 Set 6 Set 7	Overview →
Arithmetic: percentage, ratio, averages, time & work	132	Set 1 Set 2 Set 3 Set 4 Set 5 Set 6 Set 7	Overview →
Puzzles, arrangements & general mental ability	113	Set 1 Set 2 Set 3 Set 4 Set 5 Set 6	Overview →
Logical & analytical reasoning	68	Set 1 Set 2 Set 3	Overview →
Data interpretation & sufficiency	58	Set 1 Set 2 Set 3	Overview →
Counting, permutations & probability	43	Set 1 Set 2	Overview →
Geometry & mensuration	20	Set 1	Overview →
Decision making & interpersonal skills	6	Set 1	Overview →

How the tests work

Every test is free. Your score shows the moment you submit; a free sign-up opens the full report, every answer explained, and a set of your mistakes to revise.
Stop any time — your answers are saved in this browser, and this page marks what you've done and what's next.
Questions are UPSC's own, word for word; answers follow UPSC's official keys. Every Sunday there's also a Weekly Revision Quiz on the week's Daily Briefs.