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UPSC Civil Services Examination 2026: Prelims & Mains Detailed Syllabus PDF

Subject-wise micro-listing of General Studies Paper 1, CSAT Paper 2, GS-I through GS-IV, and essay structuring guidelines for civil services aspirants.

Published: 04 Oct 2026•10 min read
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UPSC Civil Services Examination 2026: Prelims & Mains Detailed Syllabus PDF

Prelims Paper 1 (GS) & Paper 2 (CSAT)

The UPSC CSE remains India’s premier competitive examination, evaluating analytical clarity, governance readiness, and multidisciplinary comprehension.

Prelims Paper 1 covers Indian Polity, Economy, Environment, History, and Current Events, while Paper 2 (CSAT) requires 33% qualifying marks across logical reasoning and reading comprehension.

Mains GS-I to GS-IV Detailed Micro-Listing

GS Paper 1 covers Indian Heritage and Culture, History and Geography of the World, and Society.

GS Paper 2 focuses on Governance, Constitution, Polity, Social Justice and International Relations.

GS Paper 3 spans Technology, Economic Development, Bio-diversity, Environment, Security and Disaster Management.

GS Paper 4 evaluates Ethics, Integrity, and Aptitude through theoretical foundations and situational case studies.

Essay Paper & Philosophical Themes

The Essay Paper requires writing two essays (1000–1200 words each) chosen from Section A and Section B, each carrying 125 marks.

Recent trends favor reflective, philosophical topics requiring interdisciplinary examples drawn from history, economics, ethics, and international affairs.

Optional Subject Strategy & Selection

The two Optional papers account for 500 marks in total, heavily determining candidate ranking and service allocation.

Choose based on personal academic interest, availability of mentor guidance, quality study material, and consistency of scoring trends.

Personality Test (Interview) Evaluation

Carrying 275 marks, the Interview evaluates mental alertness, critical assimilation, clear expression, judgment balance, and moral integrity.

Written by

Saumya Shree
Saumya ShreeEditor in Chief | Xamrectt.com

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