Every year, the Tamil Nadu Public Service Commission (TNPSC) conducts the Combined Civil Services Examination Group 1 (TNPSC Group 1) to recruit qualified candidates for prestigious administrative positions in the state.
The TNPSC Group 1 Selection Process 2025 consists of three stages — Preliminary Exam, Mains Exam, and Interview.
Candidates aiming for these top posts should thoroughly go through the TNPSC Group 1 Syllabus and Exam Pattern 2025 to plan an effective preparation strategy.

📘 Overview – TNPSC Group 1 Syllabus 2025

Particulars	Details
Organization	Tamil Nadu Public Service Commission (TNPSC)
Exam Name	TNPSC Group 1 Examination 2025
Vacancies	72 (Group 1 & 1A Services)
Selection Process	Preliminary Exam → Mains Exam → Interview
Total Marks	Prelims – 300
Duration	Prelims – 3 hours
Language of Exam	English & Tamil
Mode of Exam	Offline (OMR & Descriptive)
Official Website	www.tnpsc.gov.in

🧮 TNPSC Group 1 Exam Pattern 2025

The TNPSC Group 1 Exam is divided into Prelims, Mains, and an Interview round.

📝 Prelims Exam Pattern 2025

Type: Objective (MCQs)
Duration: 3 Hours
Marks: 300
No negative marking
Qualifying Nature: Marks not added in the final merit

Subjects	No. of Questions	Marks	Duration
General Studies (Degree Standard)	175	300	3 hours
Aptitude & Mental Ability Test (SSLC Standard)	25
Total	200	300	3 hours

⚖️ Mains Exam Pattern 2025

Paper	Subject	Marks	Duration
Paper I	Tamil Eligibility Test (SSLC Standard)	100	3 hours
Paper II	General Studies I (Modern History, Social Issues, Aptitude)	250	3 hours
Paper III	General Studies II (Polity, S&T, Tamil Heritage)	250	3 hours
Paper IV	General Studies III (Geography, Environment, Economy)	250	3 hours
Total (Mains)	—	750 Marks	—
Interview	—	100 Marks	—

🎯 TNPSC Group 1 Prelims Syllabus 2025

The Prelims syllabus is divided into two major parts:

Part A – General Studies (Degree Standard – 175 Questions)

1️⃣ General Science

Nature of Universe, Mechanics, Force, Motion, Energy
Basic Physics, Chemistry, Biology concepts
Life Sciences, Human Physiology, Health & Hygiene
Latest inventions in Science & Technology

2️⃣ Geography

India & Tamil Nadu – Physical Features, Rivers, Resources
Climate, Monsoon, Forests, Agriculture, Natural Calamities
Disaster Management, Population, Environmental Issues

3️⃣ History & Culture

Indus Valley to Modern History
Indian National Movement
Prominent Leaders: Mahatma Gandhi, Ambedkar, Periyar, Kamarajar
Indian Culture, Unity in Diversity, Arts & Literature

4️⃣ Indian Polity

Constitution, Preamble, Union & State Governments
Fundamental Rights, Duties, DPSP
Judiciary, Election Process, RTI, Lokpal, Women Empowerment

5️⃣ Indian Economy & Development Administration

Planning, NITI Aayog, GST, RBI, Finance Commission
Agriculture, Industry, Poverty, Employment
Tamil Nadu’s Welfare Schemes, Economic Growth

6️⃣ History, Culture & Movements in Tamil Nadu

Tamil Literature, Sangam Age, Thirukkural Significance
Role of Tamil Nadu in Freedom Struggle
Dravidian & Self-Respect Movements

Part B – Aptitude & Mental Ability (SSLC Standard – 25 Questions)

Aptitude: Simplification, Percentage, Ratio, Time & Work, Interest, HCF, LCM, Area & Volume
Reasoning: Logical Thinking, Puzzles, Dice, Series, Visual & Alpha-Numeric Reasoning

📄 Download TNPSC Group 1 Prelims Syllabus PDF: [Download Here]

📚 TNPSC Group 1 Mains Syllabus 2025

The Mains Exam is descriptive and focuses on conceptual understanding, analytical skills, and clarity of expression.

Paper	Units	Marks
Paper I	Tamil Language Aptitude Test (SSLC Level)	100
Paper II	Modern Indian History & Culture, Social Issues in India & TN, General Aptitude	250
Paper III	Indian Polity, Science & Tech, Tamil Society & Heritage	250
Paper IV	Geography, Environment & Biodiversity, Indian Economy	250

📥 Download Full TNPSC Group 1 Mains Syllabus PDF: [Download Here]

⚖️ Selection Process

Preliminary Examination – Qualifying in nature
Main Examination – Descriptive type papers
Interview – Personality and knowledge evaluation

🔗 Important Links

[Homepage – result.testpe.in]

🏛️ TNPSC Group 1 Syllabus