All Exams Test series for 1 year @ ₹349 only
IAS (UPSC CSE) img

UPSC CSE (IAS) 2027 Prelims Mock Test Series

661 tests 3 Tests Free
946 attempts
English, Hindi
20 Full Test
272 Chapter Test
53 Sectional Test
48 NCERT Based Test
228 PYQ Test
7 Current Affairs
33 Previous Year Paper
Last updated at: 5th August, 2026, 02:48 PM
Start Your Exam Preparation Today!
General Studies (10)
CSAT (10)
Free
Full Test - 01: UPSC CSE Prelims GS 2027
120 Minutes
100 Questions
200 Marks
1,432 Attempted
English, Hindi
MEDIUM
Attempted by 13 aspirants in 12 hours
plus
Full Test - 02: UPSC CSE Prelims GS 2027
120 Minutes
100 Questions
200 Marks
English, Hindi
MEDIUM
Attempted by 15 aspirants in 12 hours
plus
Full Test - 03: UPSC CSE Prelims GS 2027
120 Minutes
100 Questions
200 Marks
English
MEDIUM
Available on 30th Aug, 07:00 PM
plus
Full Test - 04: UPSC CSE Prelims GS 2027
120 Minutes
100 Questions
200 Marks
English
MEDIUM
Available on 30th Sep, 07:00 PM
plus
Full Test - 05: UPSC CSE Prelims GS 2027
120 Minutes
100 Questions
200 Marks
English
MEDIUM
Available on 30th Oct, 07:00 PM
plus
Full Test - 06: UPSC CSE Prelims GS 2027
120 Minutes
100 Questions
200 Marks
English
MEDIUM
Available on 30th Nov, 07:00 PM
plus
Full Test - 07: UPSC CSE Prelims GS 2027
120 Minutes
100 Questions
200 Marks
English
MEDIUM
Available on 30th Dec, 07:00 PM
plus
Full Test - 08: UPSC CSE Prelims GS 2027
120 Minutes
100 Questions
200 Marks
English
MEDIUM
Available on 30th Jan, 07:00 PM

UPSC CSE Prelims Test Series 2027 - IAS GS & CSAT Mock Tests

Prepare for the UPSC Civil Services Preliminary Examination with Prepp's UPSC CSE Prelims Test Series 2027. This online test series is designed for IAS aspirants who want structured practice for General Studies Paper I and CSAT Paper II through full-length mock tests, chapter-wise tests, sectional tests, NCERT-based tests, PYQ tests, and previous year papers. 

The UPSC CSE IAS Prelims Mock Test Series 2027 helps aspirants practise according to the latest UPSC Prelims pattern, improve accuracy, revise important subjects, analyse weak areas, and build confidence for the actual examination. It covers key areas such as History, Polity, Geography, Economy, Environment and Ecology, Science and Technology, Current Affairs, CSAT, Logical Reasoning, Quantitative Aptitude, and Reading Comprehension.

Candidates searching for the best UPSC Prelims test series 2027, UPSC GS mock test, UPSC CSAT mock test, IAS Prelims online test series, UPSC PYQ test series, UPSC NCERT test series, and UPSC previous year paper practice can use this test series for complete Prelims-focused preparation.

UPSC CSE Prelims Test Series 2027 Overview

Prepp's UPSC CSE 2027 Prelims Test Series includes a total of 654 tests and practice sets. The test series is available in English and Hindi and is designed to support both beginners and advanced aspirants through topic-wise, subject-wise, and full-length mock test practice.

Test Series DetailsInformation
Test Series NameUPSC CSE IAS 2027 Prelims Mock Test Series
Exam CoveredUPSC Civil Services Examination 2027
Stage CoveredPrelims
Papers CoveredGeneral Studies Paper I and CSAT Paper II
Total Tests and Practice Sets654
LanguagesEnglish and Hindi
ModeOnline

What is Included in UPSC CSE Prelims Mock Test Series 2027?

This UPSC Prelims online test series gives aspirants complete practice support for GS Paper I and CSAT Paper II. Candidates can start with NCERT-based tests and chapter tests, move to sectional tests, attempt full-length mock tests, and revise through PYQ tests and previous year papers.

Test CategoryNumber of TestsPurpose
Full-Length Mock Tests20Complete UPSC Prelims simulation for GS Paper I and CSAT Paper II.
Chapter Tests272Topic-wise practice for important UPSC Prelims subjects.
Sectional Tests53Subject-wise and paper-wise practice for GS and CSAT.
NCERT Based Tests48Foundation-level practice based on NCERT themes and subjects.
PYQ Tests228Practice based on UPSC previous year question trends.
Previous Year Papers33Year-wise previous paper practice for GS Paper I and CSAT Paper II.
Total654Complete UPSC CSE Prelims preparation support.

Why Choose Prepp's UPSC Prelims Test Series 2027?

UPSC CSE Prelims is one of the most competitive screening stages in India. Aspirants need strong conceptual clarity, regular revision, current affairs coverage, CSAT practice, and the ability to eliminate options under exam pressure. Prepp's UPSC Prelims Test Series 2027 helps candidates prepare in a structured and exam-oriented manner.

  • Complete UPSC CSE Prelims test series for GS Paper I and CSAT Paper II.
  • 654 tests and practice sets for structured preparation.
  • 20 full-length mock tests for real exam-like practice.
  • 272 chapter tests for topic-wise preparation.
  • 53 sectional tests for focused GS and CSAT practice.
  • 48 NCERT-based tests for building foundation concepts.
  • 228 PYQ tests for previous year question trend practice.
  • 33 previous year papers for year-wise exam practice.
  • Subject-wise coverage of History, Polity, Geography, Economy, Environment, Science, Current Affairs, and CSAT.
  • Available in English and Hindi.
  • Useful for beginners, repeaters, and advanced UPSC aspirants.

UPSC Prelims Full-Length Mock Tests

Full-length mock tests are essential for building exam temperament. Prepp's UPSC CSE Prelims Test Series includes 20 full-length mock tests, divided into General Studies and CSAT practice. These tests help aspirants practise time management, accuracy, question selection, and paper-level strategy.

Full Test TypeNumber of Tests
General Studies Full Tests10
CSAT Full Tests10
Total Full Tests20

These full-length UPSC mock tests help candidates understand the difficulty level of the exam, improve decision-making, and develop the stamina required for attempting the actual Prelims papers.

UPSC CSE Chapter-Wise Tests for Prelims 2027

Chapter-wise tests help aspirants build a strong foundation before attempting full mock tests. Prepp's UPSC CSE Prelims Test Series includes 272 chapter tests across important GS and CSAT subjects. These tests are useful for revising concepts, practising topic-wise questions, and identifying weak areas.

SubjectChapter Tests
Indian Economy39
Indian Geography17
CSAT50
Modern History24
Indian Polity44
Medieval History12
Environment and Ecology36
Physical Geography17
Ancient History and Culture26
Science and Technology5
World Geography2
Total Chapter Tests272

UPSC CSE Sectional Tests for GS and CSAT

Sectional tests help aspirants focus on one paper or subject area at a time. They are useful for improving accuracy, revising important topics, and practising questions before attempting full-length mock tests. Prepp's UPSC Prelims Test Series includes 53 sectional tests for General Studies Paper I and CSAT Paper II.

Sectional Test TypeNumber of Tests
General Studies Paper I43
CSAT Paper II10
Total Sectional Tests53

These sectional tests are helpful for candidates who want to revise specific areas of the UPSC Prelims syllabus and improve their performance in GS and CSAT separately.

UPSC NCERT Based Test Series

NCERTs are an important foundation for UPSC CSE preparation. Prepp's UPSC CSE Prelims Test Series includes 48 NCERT-based tests covering Art and Culture, History, Polity, Geography, General Science, and Economy. These tests are useful for building conceptual clarity and revising basic facts before moving to advanced-level questions.

NCERT SubjectNumber of Tests
Art and Culture5
History12
Polity4
Geography14
General Science6
Economy7
Total NCERT Based Tests48

UPSC PYQ Test Series for Prelims Practice

Previous year questions are one of the most important resources for UPSC preparation. They help aspirants understand how UPSC frames questions, which topics are repeated, how options are designed, and how factual knowledge is connected with conceptual understanding. Prepp's UPSC Test Series includes 228 PYQ tests for subject-wise practice.

PYQ Test SubjectNumber of Tests
Culture and History23
Polity24
Geography21
General Science10
Environment7
Current Affairs15
English35
Verbal Reasoning5
CSAT24
Quantitative Aptitude28
Logical Reasoning26
General Studies10
Total PYQ Tests228

UPSC Previous Year Papers for GS and CSAT

Solving previous year papers helps aspirants understand the actual UPSC Prelims difficulty level and question pattern. Prepp's UPSC CSE Prelims Test Series includes 33 previous year paper tests for General Studies Paper I and CSAT Paper II.

Previous Year Paper TypeNumber of Tests
General Studies Paper I17
CSAT Paper II16
Total Previous Year Papers33

Aspirants should attempt previous year papers regularly to understand the real nature of UPSC questions, revise high-priority topics, and improve elimination skills.

UPSC CSE Prelims Exam Pattern 2027

The UPSC CSE Preliminary Examination consists of two objective-type papers: General Studies Paper I and CSAT Paper II. Both papers are conducted for 200 marks each. CSAT is qualifying in nature, while the score of General Studies Paper I is considered for Prelims qualification.

PaperQuestionsMarksDurationNature
General Studies Paper I1002002 HoursMerit-based for Prelims qualification
CSAT Paper II802002 HoursQualifying

Question Type: Objective-type multiple-choice questions

Negative Marking: One-third of the marks assigned to a question are deducted for every incorrect answer.

CSAT Qualifying Marks: Candidates need to score at least 33% in CSAT Paper II.

UPSC Prelims Papers: General Studies Paper I and CSAT Paper II.

Subject-Wise Coverage in UPSC Prelims Test Series 2027

History and Culture

The History and Culture section includes Ancient History, Medieval History, Modern History, Art and Culture, freedom struggle, cultural developments, important personalities, movements, and previous year question practice. This helps candidates build a strong foundation for one of the most important UPSC Prelims areas.

Indian Polity

The Polity section covers the Constitution, Parliament, President, Prime Minister, Judiciary, Fundamental Rights, Directive Principles, constitutional bodies, non-constitutional bodies, governance, federalism, local government, and important polity-related concepts. Regular practice helps aspirants improve conceptual clarity and accuracy.

Geography

The Geography section includes Indian Geography, Physical Geography, World Geography, climatology, geomorphology, oceanography, mapping, resources, agriculture, industries, and location-based questions. The test series includes chapter tests, NCERT tests, and PYQ tests for strong geography preparation.

Indian Economy

The Economy section includes national income, inflation, banking, fiscal policy, monetary policy, budget, taxation, external sector, economic planning, poverty, unemployment, agriculture, infrastructure, and current economy topics. These tests help aspirants connect static concepts with current affairs.

Environment and Ecology

The Environment section includes ecology, biodiversity, climate change, conservation, environmental conventions, protected areas, pollution, sustainable development, and India-specific environmental initiatives. This section is important for both static and current affairs-based questions.

Science and Technology

Science and Technology tests help candidates revise basic science, biotechnology, space technology, defence technology, health, ICT, innovations, and recent scientific developments relevant for UPSC Prelims.

Current Affairs

Current Affairs is a major part of UPSC Prelims preparation. The test series includes current affairs-based practice through PYQ tests and GS practice sets to help aspirants connect daily news with static subjects.

CSAT

CSAT is qualifying, but candidates must clear the 33% requirement to move ahead in the selection process. The CSAT section includes comprehension, logical reasoning, analytical ability, decision making, basic numeracy, data interpretation, verbal reasoning, and quantitative aptitude.

How UPSC Mock Tests Improve Prelims Preparation

Regular mock test practice is essential for UPSC CSE Prelims because the exam tests both knowledge and application. Aspirants must learn how to eliminate wrong options, manage time, identify tricky questions, and avoid negative marking. Prepp's UPSC mock tests help aspirants develop these skills through regular practice and analysis.

  • Improves Accuracy: Regular practice helps reduce guesswork and wrong attempts.
  • Builds Exam Temperament: Full-length mocks help candidates practise under exam-like pressure.
  • Strengthens Revision: Chapter tests and NCERT tests help revise important concepts.
  • Improves CSAT Readiness: Dedicated CSAT tests help candidates clear the qualifying paper confidently.
  • Helps Analyse Weak Areas: Subject-wise tests help identify topics that need more revision.
  • Supports PYQ-Based Preparation: PYQ tests help candidates understand UPSC question trends.
  • Improves Time Management: Mock tests help aspirants decide how much time to spend on each question.

How to Use Prepp UPSC CSE Prelims Test Series Effectively?

Aspirants should use the UPSC CSE Prelims Test Series in a planned manner. A good strategy is to begin with NCERT-based and chapter tests, move to sectional tests, attempt full-length mocks regularly, and revise previous year papers before the exam.

  1. Start with NCERT-based tests: Build basic understanding of History, Geography, Polity, Economy, and Science.
  2. Attempt chapter tests: Strengthen topic-wise preparation and revise important concepts.
  3. Practise sectional tests: Improve performance in GS Paper I and CSAT Paper II separately.
  4. Solve PYQ tests: Understand UPSC question framing and repeated themes.
  5. Attempt full-length mocks: Practise complete Prelims simulation under timed conditions.
  6. Analyse mistakes: Review wrong answers, skipped questions, and doubtful topics after every test.
  7. Revise weak areas: Use test analysis to plan revision and improve score gradually.

Who Should Enroll in UPSC CSE Prelims Test Series 2027?

This test series is suitable for all aspirants preparing for UPSC CSE Prelims 2027. It is useful for beginners who want topic-wise practice, repeaters who want a stronger revision plan, and advanced aspirants who want full-length mock tests and PYQ-based practice.

  • Candidates preparing for UPSC CSE 2027.
  • Aspirants looking for UPSC Prelims GS mock tests.
  • Aspirants looking for UPSC CSAT mock tests.
  • Students who want UPSC NCERT-based practice tests.
  • Candidates who need chapter-wise and sectional practice.
  • Aspirants who want UPSC previous year papers and PYQ tests.
  • Beginners who want structured Prelims preparation.
  • Repeaters who want to improve accuracy and revision quality.
  • Working professionals who need flexible online UPSC practice.

UPSC CSE Prelims Test Series 2027 Highlights

  • 654 tests and practice sets for complete Prelims preparation.
  • 20 full-length mock tests for GS and CSAT.
  • 272 chapter tests for subject-wise preparation.
  • 53 sectional tests for GS Paper I and CSAT Paper II.
  • 48 NCERT-based tests for foundation building.
  • 228 PYQ tests for previous year trend practice.
  • 33 previous year papers for exam-level revision.
  • Dedicated CSAT practice for qualifying paper preparation.
  • Available in English and Hindi.
  • Designed for UPSC CSE IAS Prelims 2027 aspirants.

Frequently Asked Questions About UPSC CSE Prelims Test Series 2027

What is the UPSC CSE Prelims Test Series 2027?

The UPSC CSE Prelims Test Series 2027 is an online mock test series for IAS aspirants preparing for the Preliminary Examination. It includes full-length mocks, chapter tests, sectional tests, NCERT-based tests, PYQ tests, and previous year papers for GS Paper I and CSAT Paper II.

How many tests are included in Prepp's UPSC CSE Prelims Test Series 2027?

Prepp's UPSC CSE Prelims Test Series 2027 includes 654 tests and practice sets covering full mocks, chapter tests, sectional tests, NCERT-based tests, PYQ tests, and previous year papers.

Does this test series include UPSC GS Paper I mock tests?

Yes, the test series includes General Studies full tests, GS sectional tests, chapter tests, PYQ tests, NCERT-based tests, and previous year papers for GS Paper I preparation.

Does this test series include UPSC CSAT mock tests?

Yes, the test series includes CSAT full tests, CSAT chapter tests, CSAT sectional tests, CSAT PYQ tests, and previous year CSAT papers for Paper II preparation.

Is CSAT qualifying in UPSC Prelims?

Yes, CSAT Paper II is qualifying in nature. Candidates need to score at least 33% marks in CSAT.

Are UPSC previous year papers included in this test series?

Yes, the test series includes 33 previous year paper tests for General Studies Paper I and CSAT Paper II, along with 228 PYQ tests for subject-wise practice.

Is this UPSC test series available in Hindi?

Yes, the test series is available in both English and Hindi.

Is this test series useful for beginners?

Yes, beginners can start with NCERT-based tests and chapter tests before moving to sectional tests, PYQ tests, and full-length mock tests.

How should I use this UPSC Prelims test series?

Start with NCERT-based and chapter tests, practise sectional tests, solve PYQ tests, attempt previous year papers, and take full-length mocks regularly. After every test, analyse mistakes and revise weak areas.

Start UPSC CSE Prelims 2027 Preparation with Prepp

Prepp's UPSC CSE Prelims Test Series 2027 gives aspirants a complete online practice platform for General Studies and CSAT preparation. With full-length mocks, chapter tests, sectional tests, NCERT-based tests, PYQ tests, and previous year papers, candidates can prepare in a structured and exam-focused way.

Start practising with Prepp's UPSC CSE IAS Prelims Mock Test Series 2027 today and improve your accuracy, revision quality, CSAT readiness, and confidence for UPSC CSE Prelims.


Frequently Asked Questions
Prepp+ Subscription is a special membership that unlocks 50,000+ Mock Tests, 15,000+ Previous Year Papers, Unlimited Practice Questions, and Re-attempt on Tests available on app.What is Prepp+ Subscription?
It depends on when you've purchased it. The validity of the Prepp+ Subscription is 1 year from the date of purchase and you can also check it in your account settings or on the Prepp+ page.When will my Prepp+ Subscription expire?
No, You won't be able to access the Test Series and the previous Year's paper after your Prepp+ Subscription validity expires. To access the same, you will have to renew the Prepp+ Subscription.Will I be able to access Test Series and Previous Year Paper after my Prepp+ subscription expires?
Yes, till your Prepp+ Subscription is valid you can attempt the tests provided. You can review, reattempt and check detailed solutions any number of times.Will all of my attempted tests be available during the Prepp Plus validity period?
As long as your Prepp+ Subscription is valid, you can take as many tests as you want. You can find all the available test series and test release plans on the Prepp+ Subscription page. We cover over 500+ exams as of now and will keep on adding new test series as and when new exam notifications are out. If you are not able to find your exam/test series, please write to contactus@prepp.com.How many tests and exam do I get when I buy the Prepp+ Subscription?
If you renew the Prepp+ Subscription before the expiry date, the duration of Prepp+ Subscription simply gets added to the remaining days in your currently active Prepp+ Subscription. For example, if you renew your monthly Prepp+ Subscription 20 days before the expiry date, your renewed Prepp+ Subscription will now be valid for a total of 1 year 20 days.What happens if I renew the Prepp+ Subscription before the expiry date?
Yes, till your Prepp+ Subscription is valid you can see all the Test Series until the expiry of the Prepp+ Subscription.Will all of my enrolled Test Series be available during the Prepp+ Subscription validity Period?
You can renew the Prepp+ Subscription anytime, just like you purchased it. Since the Prepp+ Subscription has already been purchased, the renewal can be done by navigating to the Prepp+ page. Once the renewal process has been completed, validity of your Prepp+ Subscription will be extended accordingly.How can I renew my Prepp+ Subscription?