Prelims, Mains, and Interview. Each stage plays a crucial role
in the selection of IAS officers. Below is a detailed breakdown of the
exam pattern and syllabus.
1. UPSC IAS Prelims Exam Pattern
The Prelims exam is the first stage of the selection process. It is an
objective-type examination with negative marking.
| Papers | Total Questions | Marks | Negative Marking | Time |
|---|---|---|---|---|
| General Studies (Paper 1) | 100 | 200 | 1/3rd | 2 Hours |
| CSAT (Paper 2) | 80 | 200 | 1/3rd | 2 Hours |
Note: CSAT is qualifying in nature. Candidates must score
at least 33%.
2. UPSC IAS Mains Exam Pattern
Candidates who qualify the Prelims appear for the Mains examination.
The Mains exam is descriptive and consists of 9 papers.
| Type | Paper | Topics Covered | Marks |
|---|---|---|---|
| Qualifying | Paper A – Indian Language | Comprehension, Precis, Vocabulary, Short Essays | 300 |
| Qualifying | Paper B – English | Essay, Precis, Grammar, Translation | 300 |
| Merit | Essay | Essay on chosen topic | 250 |
| Merit | GS Paper 1 | History, Geography, Society, Art & Culture | 250 |
| Merit | GS Paper 2 | Polity, Governance, Constitution, IR | 250 |
| Merit | GS Paper 3 | Economy, Environment, Technology, Security | 250 |
| Merit | GS Paper 4 | Ethics, Integrity, Aptitude | 250 |
| Merit | Optional Paper 1 | Optional Subject | 250 |
| Merit | Optional Paper 2 | Optional Subject | 250 |
| Total (Mains) | 1750 | ||
3. UPSC IAS Optional Subjects
Candidates must choose one optional subject from a list of
48 subjects provided by UPSC.
Popular Optional Subjects:
Public Administration, Geography, Sociology, History,
Anthropology, Political Science, etc.
4. Personality Test (Interview)
The final stage is the Personality Test, conducted to assess
suitability for civil services.
- General awareness
- Mental aptitude
- Communication & leadership skills
- Ethical reasoning
Marks: 275
Total Marks (Mains + Interview): 2025
Preparation Tips
- Understand the syllabus thoroughly
- Choose the right optional subject
- Focus on current affairs
- Practice answer writing regularly
- Prepare through mock interviews