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.
- 11 guides
- 20 years of past papers
- Updated 28 Oct 2026
Syllabus overview UPSC Syllabus 2027: Prelims, CSAT, Mains and Official PDF
The UPSC syllabus for Prelims, CSAT and Mains, with 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 explained, with Prelims of 400 marks and negative marking, Mains of 1,750 marks in nine papers, the 275-mark interview and the 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, with the seven subjects of GS Paper 1, weightage from 1,600 past questions and the most important topics in each.
CSAT, Paper II UPSC CSAT Syllabus: Topics, Qualifying Marks and What the Paper Asks
The UPSC CSAT syllabus in full, with what CSAT is, the maths, reasoning and comprehension topics, 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, with the official syllabus, pattern and marks, the 2025 and 2026 topics, and how to write and prepare the essay.
Every essay topic UPSC Essay Topics Previous Years: Every Topic From 2007 to 2026
UPSC essay topics previous years, in full: All 138 from 2007 to 2026, year by year and by theme, with how the topics have changed and…
GS Paper I UPSC GS 1 Syllabus: History, Culture, Geography and Indian Society
The UPSC GS 1 syllabus for Mains in full, covering 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, covering polity, governance, social justice and international relations, with 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, covering economy, agriculture, science, environment, disasters and security, with 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 asked from 2019 to 2026, how case studies are marked, and how to…
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