Group 1 candidates rarely ask whether to study. They ask where, because the syllabus is wide and every coaching list adds more books. TNPSC answers part of it for you: the official syllabus says how many Prelims questions each unit carries and how many marks each Mains unit is worth. In Prelims, three units carry 130 of the 175 General Studies questions, and General Science carries 10.
Everything below comes from TNPSC's official Group 1 syllabus, so you can decide where to study by the real weights.
TNPSC Group 1: three stages, and what each one decides
| Stage | What it is | Counts for rank? |
|---|---|---|
| Prelims | One objective paper: 175 General Studies questions (degree standard) and 25 Aptitude and Mental Ability questions (SSLC standard) — 200 questions, 300 marks, 3 hours | No — screening only |
| Mains | A Tamil eligibility paper (SSLC standard) and three descriptive General Studies papers of 250 marks each | General Studies papers: yes, 750 marks. Tamil paper: qualifying only |
| Interview | 100 marks | Yes |
- There is no negative marking in Prelims, so attempt every question.
- Your rank is decided out of 850 marks: the three Mains General Studies papers and the interview.
Because Prelims only screens, a good plan studies its units in a way that also serves Mains: short notes you can later turn into answers, not just facts for multiple choice.
Where to study for Group 1 Prelims, unit by unit
The unit names and question counts are from TNPSC's official Group 1 syllabus. Current events are part of every unit, so keep a daily newspaper slot from the first week.
| Unit (official syllabus) | Questions | Where to study |
|---|---|---|
| Indian Economy and Development Administration in Tamil Nadu | 50 | Economics, Classes 6–12; one standard Indian economy reference; Tamil Nadu government policy notes; Tamil Nadu welfare schemes, social justice and reservation policy, and development indicators |
| Indian Polity | 40 | Civics, Classes 6–10, and Political Science, Classes 11–12; one standard Polity reference; the text of the Constitution for articles and schedules |
| History, Culture, Heritage and Socio-Political Movements in Tamil Nadu | 40 | History and Tamil textbooks, Classes 6–12; Thirukkural; the Justice Party, the Self-Respect Movement and Tamil Nadu's part in the freedom struggle |
| History, Culture of India and Indian National Movement | 25 | History, Classes 6–12 |
| General Science | 10 | Science, Classes 6–10; Class 11–12 chapters only for topics that recur in previous papers |
| Geography of India | 10 | Geography, Classes 6–12; an atlas, with maps of India and Tamil Nadu |
| Aptitude and Mental Ability | 25 | Mathematics, Classes 6–10: simplification, percentage, ratio, HCF and LCM, interest, area and volume, time and work; previous-year papers for reasoning |
Two things follow from those numbers:
- Economy, Polity and Tamil Nadu are three quarters of the paper. 130 of 175 General Studies questions sit in those three units. They get the first months and the longest daily block.
- The 10-question units are where hours disappear. General Science and Geography are wide subjects with few questions. Read the school books once, make short notes, and stop there until revision.
Read the Classes 6–12 books unit by unit, turning each chapter into one page of notes, before you open any reference book. Most of what a reference adds only makes sense once the school-book picture is in place.
Where to study for Group 1 Mains, paper by paper
The papers, units and marks are from TNPSC's official Group 1 Mains syllabus. Mains is a written exam, so for every unit the work is the same: build notes from the sources below, then turn them into timed answers.
| Paper and unit | Marks | Where to study |
|---|---|---|
| General Studies I: Modern History of India and Indian Culture | 100 | History, Classes 11–12; your Prelims notes on the national movement |
| General Studies I: Social Issues in India and Tamil Nadu | 100 | Economics and Political Science, Classes 11–12; newspaper reports and editorials; Tamil Nadu policy notes on education, health and social welfare |
| General Studies I: Ethics and Integrity | 50 | Ethics and Indian Culture, Classes 11–12; Thirukkural; practice with case studies |
| General Studies II: Indian Polity and Emerging Political Trends across the World affecting India | 100 | Your Prelims Polity reference; newspaper coverage of India's foreign relations |
| General Studies II: Role and Impact of Science and Technology in the Development of India | 100 | Science, Classes 6–10 for the basics; newspaper science pages for India's space, defence, energy and health programmes |
| General Studies II: Tamil Society – Culture and Heritage | 50 | Tamil and History textbooks, Classes 6–12; Thirukkural; your Prelims notes on Tamil Nadu history |
| General Studies III: General Geography and Geography of India with special reference to Tamil Nadu | 75 | Geography, Classes 6–12; an atlas |
| General Studies III: Environment, Biodiversity and Disaster Management | 75 | Geography, Classes 11–12; newspaper coverage of Tamil Nadu's cyclones, floods and droughts |
| General Studies III: Indian Economy – Current Economic Trends and Impact of Global Economy on India | 100 | Your Prelims economy reference; the Union and Tamil Nadu budgets; newspaper economy pages |
The Mains Tamil eligibility paper is set at SSLC standard and only has to be cleared. Write in Tamil once a week from the middle of your preparation, so it never becomes the paper that stops you.
A 12-month TNPSC Group 1 study plan
This plan front-loads the three heavy Prelims units, starts answer writing early, and leaves the last months before Prelims for full papers.
| Months | Focus | How to split a 7-hour day |
|---|---|---|
| 1–2 | Samacheer Kalvi Classes 6–12 for Economy, Polity and Tamil Nadu history; a newspaper every day | General Studies 5h · Aptitude 1h · News 1h |
| 3–4 | History of India and the national movement, Geography, General Science | General Studies 4.5h · Aptitude 1h · News 1h · Revision 30 min |
| 5–6 | Degree-level depth: the Polity and economy references, Tamil Nadu policy notes and schemes; one timed Mains answer a day | General Studies 4h · Answer writing 1h · Aptitude 1h · News 1h |
| 7–8 | Mains-only units: Ethics and Integrity, social issues, science and technology, environment and disaster management; Tamil writing once a week | Mains units 3.5h · Answer writing 1.5h · Aptitude 1h · News 1h |
| 9 to Prelims | Prelims mode: revision of all units, previous-year papers, a full-length test every week, aptitude speed | Test or previous-year paper 3h · Review 1.5h · Weak units 1.5h · News 1h |
| After Prelims | Mains mode: timed answers across all three General Studies papers, one full paper a week, Tamil eligibility paper practice | Answer writing 3h · Notes and revision 3h · News 1h |
If your Prelims is less than four months away, give the time to Economy, Polity and Tamil Nadu — school books first, then the references — and switch to Prelims mode for the last six weeks. Mains-only units can wait until Prelims is over.
TNPSC Group 1 study timetables
7 hours: full-time candidate
| Time | Session |
|---|---|
| 6:00–7:00 | Newspaper: Tamil Nadu and national news, with short notes by unit |
| 7:30–10:00 | This month's heavy unit: Economy, Polity or Tamil Nadu history |
| 10:30–12:00 | Second General Studies unit |
| 2:00–3:00 pm | Aptitude and reasoning practice |
| 4:00–5:00 pm | One timed Mains answer, from month 5 onwards; until then, previous-year questions |
| 8:00–8:30 pm | Revision of topics due today |
3 hours: working candidate
| Time | Session |
|---|---|
| 5:30–6:45 | This month's heavy unit |
| Lunch break | 30 minutes of the day's news |
| 8:30–9:15 pm | Second unit, or aptitude on alternate days |
| 9:15–9:45 pm | Revision, or one short Mains answer |
At the weekend, sit one full-length test or write one full Mains paper under timing, and review it the same day.
How the free planner helps you follow the plan
- A plan for Group 1. Type TNPSC Group 1, your exam date and your daily hours; the AI builds a routine weighted towards the topics that appear most in previous papers. Add your own sessions for anything you want to push harder, such as daily answer writing.
- Study in Tamil. Set Tamil as your study language and the material, revision questions and mock-test explanations come in Tamil, with technical terms kept in English alongside.
- Group 1 Prelims mock tests. Full-length papers under real exam timing. Your first test is free.
- Revision that comes back on time. Every topic returns after 1, 3, 7, 14, 30 and 60 days, and the questions get harder as you master it — the fix for forgetting articles, schemes and dates by exam day.
- Current affairs with a TNPSC filter. A daily brief with practice questions that you can filter for TNPSC (the full digest comes with Lighthouse Pro).
- A timer and a catch-up mode. Sessions stop at their scheduled length, and when you keep falling behind the planner offers to resize the routine to what you can really sustain, instead of letting you drop it.
Start today
Pick TNPSC Group 1, set your exam date, and run today's first session.
Frequently asked questions
Where should I study for TNPSC Group 1?
Start with the Samacheer Kalvi (Tamil Nadu State Board) textbooks for Classes 6 to 12 — History, Geography, Civics and Political Science, Economics and Science — because Group 1 Prelims General Studies is set at degree standard. Add one standard reference each for Indian Polity and the Indian economy, Tamil Nadu government policy notes for development administration, a daily newspaper, and previous-year papers.
Are Samacheer Kalvi books enough for TNPSC Group 1?
They are the base, not the whole of it. The Classes 6 to 12 books cover most of Prelims, but the two biggest units, Indian Economy and Development Administration in Tamil Nadu (50 questions) and Indian Polity (40), need one standard reference each plus Tamil Nadu policy notes, and Mains needs current material and answer-writing practice on top.
Which Group 1 units should I study first?
The three heaviest Prelims units — Indian Economy and Development Administration in Tamil Nadu (50 questions), Indian Polity (40) and the Tamil Nadu history, culture and heritage unit (40). Together they carry 130 of the 175 General Studies questions. General Science and Geography carry 10 each.
Do Group 1 Prelims marks count for the final rank?
No. Prelims is a screening test with no negative marking. Your rank comes from the three Mains General Studies papers (250 marks each) and the interview (100 marks), 850 marks in all. The Mains Tamil eligibility paper is qualifying only.
How long does TNPSC Group 1 preparation take?
Most full-time candidates give Group 1 ten to twelve months, Prelims and Mains together. If you are working, plan for roughly half as long again, and start writing one Mains answer a day by the middle of your preparation rather than after Prelims.
How is Group 1 different from Group 2 and Group 4?
The Prelims General Studies units have the same names, but Group 1 asks 175 General Studies questions at degree standard, against 75 in Group 2 and Group 4, and has no language section in Prelims. Group 1 also has three descriptive Mains papers and an interview.
Can I prepare for Group 1 in Tamil?
Yes. Set Tamil as your study language and Lighthouse Prep writes study material, revision questions and mock-test explanations in Tamil, keeping technical terms in English with their Tamil equivalent alongside.
Does the app have TNPSC Group 1 mock tests?
Yes, for Prelims — full-length Group 1 Prelims mock tests with 175 General Studies and 25 aptitude questions in three hours. Your first mock test is free. Mains is a written exam, so practise it with timed answers.
Is the Group 1 planner free?
Yes. The planner, session timer, spaced revision and reports are free. AI features such as generating study material use credits, and every account starts with 50,000 free.