UPSC - CSE · Prelims and Mains
UPSC Preparation Guides
The syllabus, the exam pattern and the eligibility rules, each set against what the examination has actually asked. Every weightage figure on these pages is counted from past papers, not estimated.
- Guides
- 11
- Years of past papers
- 20
- Updated
- 26 Sep 2026
Syllabus overview UPSC Syllabus 2027: Prelims, CSAT, Mains and Official PDF
The full UPSC syllabus for Prelims, CSAT and Mains: the official text of every General Studies paper, the official PDF, and how often each topic is…
Marks and pattern UPSC Exam Pattern: Prelims, Mains and Interview Marks
UPSC exam pattern: Prelims 400 marks with one-third negative marking, Mains 1,750 marks in nine papers, interview 275 marks, and the official cut-offs.
Eligibility UPSC Age Limit and Number of Attempts: Category-wise Rules
UPSC age limit is 21 to 32 years with category-wise relaxation. See attempts for General, OBC, SC, ST and PwBD, and what UPSC data shows on…
General Studies Paper I UPSC Prelims Syllabus: Seven Subjects of GS Paper 1 and Their Weightage
The UPSC Prelims syllabus in full: the seven subjects of GS Paper 1, weightage from 1,500 past questions, the most important topics and the 2027 dates.
CSAT, Paper II UPSC CSAT Syllabus: Topics, Qualifying Marks and What the Paper Asks
The UPSC CSAT syllabus in full: what CSAT is, the maths, reasoning and comprehension topics, the 33 per cent qualifying marks and weightage since 2011.
Essay, Paper I UPSC Essay Paper: Syllabus, Pattern and How to Write the Essay
The UPSC essay paper explained: official syllabus, pattern and marks, the 2025 and 2026 topics, and how to write and prepare the essay for UPSC Mains.
Every essay topic UPSC Essay Topics Previous Years: Every Topic From 2007 to 2026
UPSC essay topics previous years list: all 138 topics from 2007 to 2026, year by year and by theme, how the topics have changed and which…
GS Paper I UPSC GS 1 Syllabus: History, Culture, Geography and Indian Society
The UPSC GS 1 syllabus for Mains in full: Indian culture, modern and world history, Indian society and geography, with weightage from 294 PYQs.
GS Paper II UPSC GS 2 Syllabus: Polity, Governance, Social Justice and International Relations
The UPSC GS 2 syllabus for Mains in full: polity, governance, social justice and international relations, with topic-wise weightage from 285 PYQs.
GS Paper III UPSC GS 3 Syllabus: Economy, Agriculture, Science, Environment and Security
The UPSC GS 3 syllabus for Mains in full: economy, agriculture, science, environment, disasters and security, with topic-wise weightage from 285 PYQs.
GS Paper IV UPSC GS 4 Syllabus: Ethics, Integrity and Aptitude Explained
The full UPSC GS 4 syllabus for the ethics paper, what it has actually asked from 2019 to 2026, how case studies are marked, and how…
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