UPSC Prelims 2026 Syllabus
UPSC Prelims Syllabus 2026 – Detailed Guide
The Union Public Service Commission Civil Services Preliminary Examination (UPSC Prelims) is the first stage of the Civil Services Examination conducted for recruitment to services like IAS, IPS, IFS, IRS, and others.
The UPSC Prelims consists of two objective-type papers:
- General Studies Paper I (GS Paper I)
- Civil Services Aptitude Test (CSAT / GS Paper II)
Both papers are conducted on the same day.
UPSC Prelims Exam Pattern 2026
| Paper | Subject | Marks | Questions | Duration | Nature |
|---|---|---|---|---|---|
| Paper I | General Studies | 200 | 100 | 2 Hours | Merit Ranking |
| Paper II | CSAT | 200 | 80 | 2 Hours | Qualifying |
| Total | — | 400 | 180 | 4 Hours | — |
Important Points
- Negative marking applies.
- 1/3rd marks are deducted for wrong answers.
- CSAT is qualifying in nature.
- Candidates must score at least 33% in CSAT.
- Marks of GS Paper I are counted for Prelims cutoff.
UPSC Prelims Syllabus 2026 – GS Paper I
1. Current Events of National and International Importance
This section tests awareness of recent happenings.
Topics Covered
- National news
- International relations
- Government schemes
- Sports events
- Awards and honors
- Science and technology developments
- Economic developments
- Environmental issues
- Summits and conferences
Preparation Tips
- Read newspapers daily.
- Follow monthly current affairs magazines.
- Focus on government policies and reports.
2. History of India and Indian National Movement
This is one of the most important sections.
Ancient India
- Indus Valley Civilization
- Vedic Period
- Buddhism and Jainism
- Mauryan Empire
- Gupta Empire
Medieval India
- Delhi Sultanate
- Mughal Empire
- Bhakti and Sufi movements
- Maratha Empire
Modern India
- Advent of Europeans
- Revolt of 1857
- Social and religious reforms
- Indian National Congress
- Freedom struggle
- Gandhian movements
- Partition and Independence
Important Areas
- Timeline-based questions
- Freedom movement leaders
- Constitutional developments
3. Indian and World Geography
Physical Geography
- Earth structure
- Volcanoes
- Earthquakes
- Mountains and plateaus
- Rivers and oceans
- Climate and monsoon
Indian Geography
- Soil types
- Agriculture
- Minerals
- Industries
- Transport
- Population
World Geography
- Continents
- Major rivers
- Important countries
- Resources distribution
Map-Based Topics
- National parks
- International boundaries
- Important straits and seas
4. Indian Polity and Governance
This is one of the highest-scoring subjects.
Constitutional Framework
- Historical background
- Preamble
- Fundamental Rights
- Directive Principles
- Fundamental Duties
Government Structure
- Parliament
- President
- Prime Minister
- Supreme Court
- High Courts
- Governor and Chief Minister
Governance
- Election Commission
- CAG
- UPSC
- Panchayati Raj
- Constitutional bodies
Important Topics
- Amendments
- Important judgments
- Emergency provisions
- Federal structure
5. Economic and Social Development
Indian Economy Basics
- GDP
- Inflation
- Fiscal policy
- Monetary policy
- Banking system
Economic Concepts
- Budget
- Taxation
- Subsidies
- Poverty
- Unemployment
Social Development
- Education
- Health
- Government welfare schemes
- Inclusive growth
International Organizations
- IMF
- World Bank
- WTO
- ADB
6. Environment and Ecology
This section has become very important in recent years.
Topics Covered
- Ecosystems
- Biodiversity
- Food chains
- Climate change
- Pollution
- Wildlife conservation
Important Areas
- National parks
- Biosphere reserves
- Environmental conventions
- Endangered species
International Agreements
- Paris Agreement
- Kyoto Protocol
- COP Summits
7. General Science
Questions are usually based on basic concepts and current developments.
Physics
- Motion
- Electricity
- Energy
Chemistry
- Acids and bases
- Chemical reactions
- Everyday chemistry
Biology
- Human body
- Diseases
- Nutrition
- Biotechnology
Science & Technology
- Space missions
- Artificial Intelligence
- Robotics
- Biotechnology
UPSC CSAT Syllabus 2026 (Paper II)
CSAT is qualifying in nature.
Candidates must score:
1. Comprehension
- Reading passages
- Understanding themes
- Logical interpretation
- Vocabulary-based questions
2. Interpersonal Skills and Communication
- Communication ability
- Social understanding
- Decision-making situations
3. Logical Reasoning and Analytical Ability
Topics Include
- Coding-decoding
- Blood relations
- Seating arrangement
- Syllogism
- Statement-conclusion
- Puzzles
4. Decision Making and Problem Solving
Questions test:
- Administrative judgment
- Ethical reasoning
- Practical solutions
5. General Mental Ability
Quantitative Aptitude
- Number system
- Percentages
- Profit and loss
- Time and work
- Ratio and proportion
Data Interpretation
- Tables
- Charts
- Graphs
6. Basic Numeracy
Questions are generally from Class 10 level.
Topics
- Average
- Simple interest
- Compound interest
- Speed and distance
- Time and work
Example formula:
7. English Language Comprehension Skills
- Sentence correction
- Grammar
- Vocabulary
- Reading comprehension
Best Books for UPSC Prelims Preparation
History
- Spectrum Modern History
- NCERT History Books
Geography
- NCERT Geography
- G.C. Leong
Polity
- M. Laxmikanth
Economy
- Ramesh Singh
- Economic Survey
Environment
- Shankar IAS Environment
Current Affairs
- The Hindu
- Indian Express
- PIB
UPSC Prelims 2026 Important Facts
| Feature | Details |
|---|---|
| Mode | Offline |
| Question Type | MCQ |
| Negative Marking | Yes |
| Language | English & Hindi |
| Qualification for Mains | Based on GS Paper I cutoff |
| CSAT Requirement | Minimum 33% |
Conclusion
The UPSC Prelims syllabus is vast, but with proper planning, regular revision, and consistent practice, candidates can clear the examination successfully. Focus on conceptual clarity, current affairs, and mock test practice for better performance in UPSC Prelims 2026.
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