mains notes
UPSC Civil Services Examination –
Mains (Descriptive Stage)
The UPSC Mains Examination is the second and most crucial stage of the Civil Services Examination. It evaluates a candidate’s analytical ability, depth of understanding, clarity of thought, and written expression rather than mere factual knowledge.
1. Nature of the Exam
- Type: Descriptive (answer-writing)
- Medium: Any language listed in the 8th Schedule of the Constitution
- Total Papers: 9
- Evaluated Papers: 7
- Qualifying Papers: 2 (marks not added to merit)
2. Structure of UPSC Mains
A. Qualifying Papers (Only Pass/Fail)
| Paper | Subject | Marks |
| Paper A | Indian Language (chosen) | 300 |
| Paper B | English | 300 |
👉 Minimum 25% marks required in each to qualify.
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B. Merit Ranking Papers (Counted for Final Rank)
| Paper | Subject | Marks |
| Paper I | Essay | 250 |
| Paper II | General Studies I | 250 |
| Paper III | General Studies II | 250 |
| Paper IV | General Studies III | 250 |
| Paper V | General Studies IV (Ethics) | 250 |
| Paper VI | Optional Subject – Paper 1 | 250 |
| Paper VII | Optional Subject – Paper 2 | 250 |
Total Mains Marks = 1750
3. General Studies Papers – Description
GS Paper I
- Indian Heritage & Culture
- History (Ancient, Medieval, Modern, World History)
- Indian Society
- Geography (India & World)
GS Paper II
- Indian Constitution
- Governance & Polity
- Social Justice
- International Relations
GS Paper III
- Indian Economy
- Agriculture
- Science & Technology
- Environment
- Disaster Management
- Internal Security
GS Paper IV (Ethics)
- Ethics & Human Interface
- Attitude
- Aptitude
- Emotional Intelligence
- Moral Thinkers
- Case Studies
4. Essay Paper
- 2 essays, usually from philosophical, social, political, or economic themes
- Tests coherence, originality, and balanced thinking
5. Optional Subject
- Chosen from UPSC’s list (e.g., Geography, PSIR, History, Anthropology, Sociology, etc.)
- Two papers, deep conceptual + analytical questions