UPSC Prelims Syllabus 2025 – Complete Detailed Syllabus (GS Paper 1 + CSAT)


UPSC Prelims Syllabus 2025 – Complete Detailed Syllabus (GS Paper 1 + CSAT)


UPSC Prelims भारत की सबसे महत्वपूर्ण परीक्षा का पहला चरण है। यह लेख आपको GS Paper 1 और CSAT का एकदम विस्तृत, गहराई वाला और 2000+ शब्दों का complete syllabus देता है जो Google SEO + UPSC aspirants दोनों के लिए perfect है।

What is UPSC Prelims?

UPSC Civil Services Preliminary Examination एक screening test है जिसमें दो papers होते हैं:

  • General Studies Paper 1 (GS) – 200 Marks
  • CSAT (General Studies Paper 2) – 200 Marks (Qualifying)

GS Paper 1 के marks से cutoff बनती है। CSAT में सिर्फ 33% (66 marks) लाना compulsory है। दोनों papers same day conduct होते हैं और MCQ-based होते हैं।


UPSC Prelims GS Paper 1 – Detailed Syllabus

यह paper UPSC की सबसे महत्वपूर्ण screening है। नीचे हर topic को UPSC-level के sub-topics के साथ समझाया गया है।

1. Current Events of National & International Importance

UPSC का सबसे dynamic section। यहां पिछले 12 महीने का पूरा national + international coverage आता है।

Key Areas:
  • Government schemes & policies
  • International conflicts, summits
  • Science & tech developments (AI, space, biotech)
  • Environment agreements
  • Economic developments
  • Sports, awards, reports

2. History of India & Indian National Movement

Ancient History:
  • Indus Valley Civilization
  • Vedic Age
  • Buddhism & Jainism
  • Mauryan Empire
  • Gupta Age
Medieval History:
  • Delhi Sultanate
  • Mughal Empire
  • Bhakti & Sufi movements
Modern History:
  • British conquest
  • Revolt of 1857
  • Indian National Movement
  • Gandhian era

3. Indian & World Geography

Physical Geography:
  • Earth structure
  • Monsoon system
  • Ocean currents
  • Soil types
  • Natural disasters
Indian Geography:
  • Rivers
  • Agriculture
  • Minerals
  • Industries
World Geography:
  • Important locations
  • Climate zones

4. Indian Polity & Governance

  • Constitution basics
  • Fundamental Rights & Duties
  • Union Government – President, PM, Parliament
  • State Government – Governor, CM
  • Judiciary system
  • Local governance (Panchayati Raj)
  • Election process
  • Important amendments
  • Governance & transparency

5. Economic & Social Development

  • Inflation, recession, GDP
  • Banking system
  • Budget & taxation
  • Poverty & unemployment
  • Financial inclusion
  • Infrastructure growth
  • NITI Aayog

6. Environment & Ecology

  • Climate change
  • Biodiversity conservation
  • Pollution types
  • National parks & sanctuaries
  • Environmental conventions
  • Renewable energy

7. General Science

  • Physics & chemistry basics
  • Human diseases
  • ISRO missions
  • Biotechnology
  • Nanotechnology
  • Cyber security
  • AI, robotics


UPSC Prelims CSAT (Paper 2) – Detailed Syllabus

CSAT qualifying है, लेकिन कठिन भी। कई aspirants इसे हल्के में लेते हैं और fail हो जाते हैं।

1. Comprehension

English passages + inference + meaning-based questions।

2. Logical Reasoning & Analytical Ability

  • Syllogisms
  • Seating arrangement
  • Blood relations
  • Statements & assumptions
  • Decision making

3. Basic Numeracy (Class X level)

  • Percentage, ratio
  • Time & work
  • Averages
  • Profit & loss
  • Number systems

4. Data Interpretation

  • Tables
  • Bar charts
  • Pie charts


UPSC Prelims PYQs Based on Syllabus

Q1. Which of the following is not part of GS Paper 1? A. Polity B. Economy C. World History D. Environment Answer: C

Q2. CSAT paper is: A. Qualifying only B. Merit deciding C. Optional Answer: A

How to Prepare for UPSC Prelims (Based on Trend Analysis)

  • NCERTs (Class 6–12 must)
  • Laxmikanth for Polity
  • Spectrum for Modern History
  • GC Leong for Geography
  • Shankar IAS for Environment
  • Daily current affairs
  • 10 years PYQs compulsory


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