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
- 8
- Years of past papers
- 15
- Updated
- 20 Sep 2026
Syllabus overview UPSC Syllabus 2027: Prelims, CSAT and Mains, Paper by Paper
The complete UPSC syllabus in the Commission's own words, and what each Prelims line has actually carried across 1,500 questions from 2011 to 2025.
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: General Studies Paper I, Line by Line
Every line of the UPSC Prelims syllabus, with the sub-topics each one contains, counted from 1,500 General Studies questions of 2011 to 2025.
CSAT, Paper II CSAT Syllabus: What the UPSC Prelims Paper II Actually Asks
The CSAT syllabus, and what the paper has actually asked across 1,195 questions since 2011, including the numeracy shift that made it harder to qualify.
GS Paper I UPSC Mains GS 1 Syllabus: Culture, History, Geography, Society
The official UPSC Mains GS 1 syllabus in full, and what the GS Paper 1 exam has actually asked across 254 questions between 2013 and 2024,…
GS Paper II UPSC Mains GS 2 Syllabus: Polity, Governance, Social Justice, IR
The official UPSC Mains GS 2 syllabus in full, and what the GS Paper 2 exam has actually asked across 245 questions between 2013 and 2024,…
GS Paper III UPSC Mains GS 3 Syllabus: Economy, Agriculture, Security, Environment
The official UPSC Mains GS 3 syllabus in full, with subject wise weightage counted from 244 questions asked between 2013 and 2024, block by block.
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