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TNPSC · Group I

TNPSC Exam Pattern Guide

டிஎன்பிஎஸ்சி தேர்வு முறை

Stage-wise guide to prelims, mains, Tamil eligibility, interview, counselling, and certificate verification.

Group I guideOfficial website

Notification is final

This guide helps you prepare and navigate official links. Confirm the latest TNPSC notification before applying, paying fees, downloading hall tickets, or checking results.

Last Reviewed

14 May 2026

Review Cadence

Monthly

Authority

TNPSC official notification, syllabus, scheme, dashboard, and result pages are the final authority.

Related Study Links

Use these internal guides and practice pages when they match the paper or stage you are preparing for.

Group I

Group I syllabus

Read the syllabus before interpreting the marks and stage pattern.

Group I

Group I previous papers

Use previous papers to understand how the pattern is applied.

Group I

Group I study plan

Create a schedule that matches the official exam scheme.

Practice

TNPSC aptitude practice

Topic-wise timed practice for quantitative aptitude, reasoning, mental ability, and DI.

Aptitude

Percentage guide

Useful for marks, population, election, profit-loss, and DI questions.

Aptitude

Ratio and proportion guide

Core topic for arithmetic, mixtures, ages, partnership, and data interpretation.

Aptitude

Time and work guide

Important for work-rate, efficiency, pipes, and combined-work questions.

Reasoning

Reasoning practice

Practise coding-decoding, series, blood relations, direction sense, and arrangements.

TNPSC Group I Exam — Three-Stage Structure

TNPSC Group I is a three-stage selection process: Preliminary Examination (screening), Main Examination (merit ranking), and Oral Test (Interview). Only the Mains + Interview marks determine your final rank — Prelims is purely qualifying.

  • Stage 1 — Preliminary Examination: Objective MCQ. Qualifying in nature — marks not counted for final rank.
  • Stage 2 — Main Examination: Descriptive written. Marks counted for rank. Higher weightage for GS Papers I and II.
  • Stage 3 — Oral Test (Interview): 60 marks. Added to Mains total for final ranking.
  • Final merit list = Mains Paper I + Paper II + Paper III + Interview (maximum 1260 marks).

Preliminary Examination — Paper Scheme

The Prelims is a single combined objective paper of 200 questions to be answered in 3 hours. General Studies and Aptitude & Mental Ability are both covered in this single paper — there is no separate aptitude paper.

  • Total questions: 200 (all objective type — 4 options, one correct answer).
  • Total marks: 300 (each question carries 1.5 marks).
  • Duration: 3 hours (180 minutes).
  • Negative marks: None — no penalty for wrong answers.
  • Language: Question paper in Tamil and English.
  • Minimum qualifying marks: General — 90 marks (out of 300). BC/BCM — 82.5 marks. MBC/DNC — 78 marks. SC/ST — 75 marks.
  • Aptitude & Mental Ability: ~25–35 questions embedded within the 200-question paper.

Preliminary Examination — Subject-wise Distribution

The 200 questions span General Studies (GS) and Aptitude & Mental Ability (AMA). GS covers all major subjects. The approximate distribution based on recent papers is:

  • General Science (Physics, Chemistry, Biology): ~30–35 questions.
  • Current Events — India and Tamil Nadu: ~25–30 questions.
  • History and Culture — India and Tamil Nadu: ~25–30 questions.
  • Geography — India and Tamil Nadu: ~20–25 questions.
  • Polity and Governance: ~20–25 questions.
  • Economy and Planning: ~15–20 questions.
  • Environment, Ecology, and Disaster Management: ~10–15 questions.
  • Aptitude & Mental Ability (Arithmetic + Reasoning + DI): ~25–35 questions.

Main Examination — Paper Scheme

The Mains consists of three descriptive written papers — two General Studies papers and one Tamil Eligibility paper. Papers I and II carry the highest marks and determine your rank. Paper III (Tamil) is qualifying only.

  • Paper I — General Studies: 300 marks. Duration: 3 hours. Descriptive answers in Tamil or English.
  • Paper II — General Studies: 300 marks. Duration: 3 hours. Descriptive answers in Tamil or English.
  • Paper III — Tamil Eligibility Test: 100 marks. Duration: 3 hours. Must score minimum 40 marks to qualify. Marks NOT counted for rank.
  • Total Mains marks (for rank): 600 (Paper I + Paper II only).
  • Answer format: Mix of short answers (5 marks), medium answers (8–10 marks), and long essays (15–20 marks).

Main Examination — Paper I Topics

Paper I focuses on General Studies broadly — History, Culture, Geography, Science, and Environment. Based on recent notifications:

  • History of India — ancient, medieval, modern; Tamil Nadu history; cultural heritage.
  • Indian National Movement — phases, leaders, Tamil Nadu contribution.
  • Geography — physical geography, resources, Indian and Tamil Nadu specifics.
  • General Science — physics, chemistry, biology, science and technology, ISRO, space.
  • Environment — ecology, biodiversity, climate change, disaster management.
  • Current Events — national and Tamil Nadu (last 12 months).

Main Examination — Paper II Topics

Paper II focuses on Polity, Economy, Governance, and Social Issues. Based on recent notifications:

  • Indian Constitution — Preamble, FRs, DPSP, amendments, Parliament, Judiciary.
  • Indian Polity — federal structure, President, PM, state governments, local bodies.
  • Indian Economy — planning, liberalisation, banking, RBI, poverty, agriculture.
  • Tamil Nadu Administration — districts, Collectors, Panchayati Raj, welfare schemes.
  • Social Issues — education, health, women empowerment, SC/ST welfare, social reform.
  • Ethics and Integrity in Administration — relevant for mains answer writing.
  • Essay questions — typically 1–2 broad essay questions (15–20 marks each).

Oral Test (Interview) — 60 Marks

Candidates who qualify in Mains are called for the Oral Test before a TNPSC board. The 60 marks are added to the Mains total (600 marks) to arrive at the final rank score of 660 marks.

  • Panel: 4–5 TNPSC board members including senior IAS officers.
  • Duration: 20–30 minutes typically.
  • Topics: Educational background, service preference, current affairs, Tamil Nadu governance, district and community knowledge, general awareness, personality assessment.
  • No separate qualifying cutoff for interview — it is simply added to the Mains score.
  • Preparation: Know your district well, your degree subject in depth, major government schemes, and 3–5 current national/Tamil Nadu issues.

Final Rank and Marks Summary

Use this to plan your preparation weightage. Prelims does not contribute to rank — but failing it ends your attempt. The rank is decided entirely by Mains + Interview.

  • Preliminary Exam: 300 marks. Role: Qualifying only. Target: 150+ (50%) to clear comfortably.
  • Mains Paper I (GS): 300 marks. Counted for rank.
  • Mains Paper II (GS): 300 marks. Counted for rank.
  • Mains Paper III (Tamil): 100 marks. Qualifying only — minimum 40/100.
  • Oral Test (Interview): 60 marks. Counted for rank.
  • Total marks for rank: 660 (Mains 600 + Interview 60).
  • Strategy: Invest equally in both Mains GS papers; do not neglect Tamil Paper III (one failure ends the attempt); build interview readiness alongside Mains preparation.

Mock Test Strategy Using the Pattern

Mock tests are only useful if they replicate the real pattern. Use the scheme above to design your practice sessions.

  • Prelims mock: 200 questions, 3 hours, no negative marks. Aim to complete within 2.5 hours, leaving 30 minutes for review.
  • Allocate roughly 1 minute per GS question and 75 seconds per aptitude question as a benchmark.
  • Mains mock: Write full answers under 3-hour timed conditions. Score yourself against UPSC/TNPSC model answers.
  • Identify which paper drains more time and adjust answer-writing practice accordingly.
  • Interview mock: Do 2–3 mock interviews with seniors or mentors covering your district, degree subject, and current affairs.

Pattern checkpoints

  • Check the active scheme of examination because marks, stages, and papers can change by notification.
  • Note whether the exam has prelims only, prelims plus mains, interview, or certificate verification only after written exam.
  • Check language rules separately for General Tamil, General English, Tamil eligibility, and technical papers.

Preparation use

  • Use the pattern to decide daily time split between subject learning, revision, and timed practice.
  • For mains exams, start answer-writing practice after the first syllabus pass.
  • For Group IV-style exams, prioritize speed, accuracy, and repeated revision.

Official Links

notificationTNPSC notificationsresourceAnnual plannerresourceScheme of examinationresourceExam dashboardresourcePrevious year question papers