UPSC Civil Services (IAS) Complete Syllabus

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1. Preliminary Examination

Paper I – General Studies (200 Marks)

• Current events of national and international importance
• History of India and Indian National Movement
• Indian and World Geography
• Indian Polity and Governance (Constitution, Political System, Panchayati Raj)
• Economic and Social Development
• Environmental Ecology, Biodiversity & Climate Change
• General Science

Paper II – CSAT (200 Marks, Qualifying)

• Comprehension
• Logical reasoning and analytical ability
• Decision-making and problem-solving
• General mental ability
• Basic numeracy (Class X level)
• Data interpretation

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2. Main Examination

Qualifying Papers

• Paper A – Indian Language (300 Marks)
• Paper B – English (300 Marks)

Paper I – Essay (250 Marks)

• Candidates write two essays on given topics.

Paper II – General Studies I (250 Marks)

• Indian Heritage and Culture
• History and Geography of the World and Society

Paper III – General Studies II (250 Marks)

• Indian Constitution
• Governance
• Social Justice
• International Relations

Paper IV – General Studies III (250 Marks)

• Technology
• Economic Development
• Biodiversity, Environment
• Security and Disaster Management

Paper V – General Studies IV (250 Marks)

• Ethics, Integrity and Aptitude
• Case Studies

Optional Subject Papers (250 Marks each)

• Paper VI – Optional Subject Paper I
• Paper VII – Optional Subject Paper II

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3. Personality Test (Interview)

• Total Marks: 275
• Assessment of personality traits
• Communication skills
• Decision-making ability
• Leadership qualities
• Awareness of current issues

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UPSC Marking Structure

Stage	Marks
Prelims	400 (Only qualifying for Mains)
Mains (Written)	1750
Interview	275
Total	2025

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Important Notes for UPSC Aspirants

• Prelims marks are not counted in final merit.
• CSAT requires minimum 33% to qualify.
• Final ranking is based on Mains + Interview.
• Optional subject selection is very important.

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Most Important Subjects for Preparation

• Indian Polity
• Modern History
• Economy
• Environment
• Current Affairs
• Ethics