UPSC - CSE · Prelims 2027
UPSC Prelims Test Series 2027
Mock tests for both Prelims papers: 47 General Studies tests (15 sectional, 12 current affairs, 20 full-length) and 15 CSAT papers, with every option of every question explained.
- GS tests
- 47
- CSAT papers
- 15
- First release
- Oct 2026
Every test
The exact Prelims pattern, every time
All 47 General Studies tests follow Paper I as UPSC sets it, so each one is a rehearsal of the real paper. The 15 CSAT papers follow Paper II.
What you receive
Two PDF booklets for each test: the question paper, and the answer key with explanations. Print them or attempt them on screen, at your own time.
- Question booklet in the UPSC layout
- Answer key and explanations booklet
- Yours to keep for revision through the cycle
What every explanation contains
- The concept the question is testing
- A verdict on each statement, with the reason
- Why each wrong option is wrong, and the misconception behind it
- The elimination logic that works in the hall
- The source the answer rests on
- The related previous-year question, where one exists
Packages
Choose the tests you need
Tests are released from October 2026 to mid-May 2027. Leave your email and we will write to you when a package opens for purchase.
Sectional
15 sectional tests, one per syllabus block
- 15 tests, 1,500 questions
- Build each subject before mixing them
- From October 2026
Current Affairs
12 tests: June 2026 to April 2027, and one consolidated
- 12 tests, 1,200 questions
- Mapped to the syllabus, never news trivia
- From December 2026
Full-Length
20 full papers in the exact Prelims pattern
- 20 tests, 2,000 questions
- Subject split follows real UPSC papers
- From January 2027
Full Package
All 47 tests
- 15 sectional, 12 current affairs, 20 full-length
- 4,700 questions, every option explained
- Saves Rs 3,000 against buying separately
Try before you buy
Judge the quality on two full papers first
The Sample Pack is two complete 100-question papers with the same explanations as the full series. It releases in October 2026 with the first sectional tests.
- One complete-syllabus paper of 100 questions
- One current affairs paper of 100 questions
- The ₹49 is adjusted against any package
15 sectional tests
One test for each block of the syllabus
Together the fifteen cover every topic of the Prelims General Studies syllabus.
| Test | Title and scope |
|---|---|
| 1 | Constitution of India Making of the Constitution, Preamble, rights, DPSP, duties, amendment, basic structure, emergency, Schedules |
| 2 | Union, States and the Political System President to Attorney General, Parliament, Governor and State legislature, courts, federalism, local bodies |
| 3 | Governance, Rights and Public Policy Election Commission, constitutional and statutory bodies, RTI, rights of vulnerable groups, schemes |
| 4 | Ancient and Medieval India Harappa to the Guptas, Sangam south, Delhi Sultanate, Vijayanagara, Mughals, Marathas |
| 5 | Art, Culture and Heritage Architecture, sculpture, painting, music and dance, literature, philosophy, UNESCO and GI heritage |
| 6 | Modern India and the National Movement Company rule, 1857, reform movements, Congress phases, Gandhian movements, constitutional development |
| 7 | Physical Geography of the World Geomorphology, climatology, oceanography, biogeography, hazards, world regions and mapping |
| 8 | Geography of India Physiography, drainage, monsoon, soils, agriculture, minerals and industry, population, map work |
| 9 | Indian Economy: Money, Markets and the State National income, RBI and banking, inflation, budget and taxation, capital markets, external sector |
| 10 | Sectors, Growth and Social Development Agriculture, industry, services, poverty and employment, demographics, human development, SDGs |
| 11 | Ecology, Biodiversity and Conservation Ecosystems, biomes, hotspots, IUCN categories, protected areas, wildlife and forest laws |
| 12 | Climate Change, Pollution and Environmental Governance Climate science, UNFCCC to Paris, pollution and waste rules, energy transition, EIA, conventions |
| 13 | Science Foundations and Everyday Science Physics, chemistry and biology as UPSC frames them, health and disease, biotechnology basics |
| 14 | Frontier Technology and Missions Space missions, defence platforms, nuclear programme, AI and semiconductors, gene editing |
| 15 | Reports, Surveys and the Union Budget Economic Survey, Union Budget, India Year Book, global indices and flagship reports (after the February Budget) |
12 current affairs tests
One test for each month from June 2026 to April 2027, and a consolidated test covering May 2026 to April 2027.
- Every question tied to a syllabus topic
- Built from the same current affairs we explain on the site
- Released from December 2026
20 full-length tests
Complete papers with all subjects mixed, released from January 2027 to mid-May 2027.
- The first five follow the subject split of real UPSC papers
- Sub-topics rotate, so no area repeats across them
- Current affairs drawn from the months already released
15 CSAT papers
CSAT mock tests for Paper II
CSAT only qualifies, but it ends many attempts. The series includes 15 full CSAT papers so that Paper II is practised as seriously as Paper I.
What the papers cover
- Reading comprehension
- Logical reasoning and analytical ability
- Basic numeracy and data interpretation, at Class X level
- Decision making and problem solving
How they are built
- Topic mix follows the CSAT papers UPSC has set since 2011
- Worked solutions, with the quickest method shown
- One-third negative marking, as in the exam
Release dates and the price of the CSAT papers will be announced on this page.
Why this split
Built on what UPSC actually asked, 2019 to 2025
We measured the subject of every question in the seven Prelims papers from 2019 to 2025, all 700 of them. The number of tests per subject follows these shares; the last column is the lowest and highest count in any one year.
| Subject | Share of the paper | Questions in a paper (range) |
|---|---|---|
| Economy and social development | 19% | 15 to 26 |
| Environment and ecology | 17% | 13 to 24 |
| History and culture | 16% | 10 to 20 |
| Polity and governance | 15% | 11 to 20 |
| Science and technology | 14% | 10 to 17 |
| Geography | 12% | 7 to 18 |
| Pure current events | 7% | 2 to 12 |
Release calendar
October 2026 to mid-May 2027
Static subjects first, current affairs from December, full papers from January.
| Month | Sectional | Current affairs test for | Full-length |
|---|---|---|---|
| October 2026 | Tests 1, 2, 4 and the Sample Pack | ||
| November 2026 | Tests 6, 7, 8 | ||
| December 2026 | Tests 9, 11, 13 | June, July, August 2026 | |
| January 2027 | Tests 3, 5, 10 | September to November 2026 | Full-length 1 and 2 |
| February 2027 | Tests 12, 14, 15 | December 2026, January 2027 | Full-length 3 to 5 |
| March 2027 | February 2027 | Full-length 6 to 10 | |
| April 2027 | March 2027 | Full-length 11 to 17 | |
| May 2027 (to the 15th) | April 2027 and the consolidated test | Full-length 18 to 20 |
How questions are written
Fresh questions, checked against primary sources
Where the content comes from
- NCERT textbooks, Classes VI to XII
- The Constitution of India and the bare Acts
- Government documents: Economic Survey, Union Budget, India Year Book, the State of Forest Report
- Releases of ministries and national institutions, and reports of UN bodies
What we do not do
- No questions copied from any question bank
- No question is reused between tests, or between the Sample Pack and the series
- No answer without a source we can show
A Mains answer-writing programme is planned. It has no date yet.