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TNPSC · Group I

TNPSC Syllabus Guide

டிஎன்பிஎஸ்சி பாடத்திட்ட வழிகாட்டி

How to read the official TNPSC syllabus, split subjects by stage, and avoid preparing from outdated patterns.

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 exam pattern

Use the pattern to decide paper-wise time, marks, and mock-test strategy.

Group I

Group I previous papers

Map old questions to syllabus headings before starting full mock tests.

Group I

Group I books

Choose one main source per subject instead of collecting too many books.

Group I

Group I study plan

Turn the syllabus into a monthly and weekly preparation calendar.

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.

How to Use This Syllabus

The TNPSC Group I syllabus is divided into Units. The same units apply to both Prelims (objective) and Mains (descriptive) — the difference is depth. For Prelims you need broad factual coverage; for Mains you need explanations, examples, data, and structured arguments.

Work through the units below, mark each topic as pending, done, or revised, and attach previous-paper questions to each heading so your revision stays targeted.

  • Unit topics with many past-paper questions → high priority. Cover these first and revise most often.
  • Do not add topics outside these units unless they appear directly in a past Group I paper.
  • Tamil Nadu-specific sub-topics within each unit carry higher weightage in Group I compared to Group II or IV.

Unit I — General Science

Covers school-level and applied science — Physics, Chemistry, Biology, Health and Nutrition, and Environment. Group I questions test application (Why does X happen?) more than pure recall.

  • Physics: Units and measurement, laws of motion (Newton), gravitation, work-energy-power, heat and thermodynamics, light (reflection, refraction, lenses), electricity (Ohm's law, circuits, power), magnetism, sound.
  • Chemistry: Matter and its nature, atomic structure, periodic table (trends), chemical bonding, acids and bases (pH, indicators), chemical reactions (types, balancing), metals and non-metals, carbon compounds, everyday chemistry.
  • Biology: Cell structure and function (organelles, mitosis, meiosis), plant and animal tissues, photosynthesis and respiration, digestive system, circulatory system (blood, heart, blood groups), excretory system, nervous system, endocrine system, reproductive system.
  • Health and Nutrition: Vitamins (A, B-complex, C, D, E, K) — sources and deficiency diseases, minerals (calcium, iron, iodine), balanced diet, communicable and non-communicable diseases, vaccination, public health programmes.
  • Science and Technology: Computers and IT basics, internet, robotics, nanotechnology, biotechnology (GM crops, vaccines), space technology (ISRO missions — Chandrayaan-3, Mangalyaan, Aditya-L1, Gaganyaan), nuclear energy.

Unit II — Current Events

Current affairs carries significant weight in Group I — typically 25–30 questions in Prelims and recurring examples in Mains answers. Cover the last 12–18 months of events across India and Tamil Nadu.

  • International events: UN resolutions, G20/G7 summits, major treaties and agreements, global indices (HDI, GHI, Press Freedom), climate summits (COP), notable elections.
  • National events: Parliament acts and bills, government schemes launched, constitutional/judicial developments, major infrastructure projects, awards (Bharat Ratna, Padma), sports (Olympics, Commonwealth Games).
  • Tamil Nadu events: State budget highlights, welfare scheme launches and expansions, appointments (Governor, Chief Minister, High Court CJ), natural disasters and relief, major industrial projects, elections.
  • Science and environment: Major ISRO launches, nuclear milestones, significant scientific discoveries, climate records, disaster events.
  • Economy: GDP growth figures, inflation trends, RBI policy changes, union budget highlights, major disinvestments, trade data.

Unit III — Geography

Geography covers physical, human, and economic geography of India and Tamil Nadu. Tamil Nadu geography carries higher weight in Group I.

  • Earth and physical geography: Structure of the earth, rock types, landforms (mountains, plateaus, plains, coastal), earthquakes and volcanoes, erosion and deposition.
  • India — physical features: Six physiographic divisions (Himalayas, Northern Plains, Peninsular Plateau, Thar Desert, Coastal Plains, Islands), Himalayan ranges, Deccan Trap and black soil, Western Ghats (Anamudi, Palakkad Gap), Eastern Ghats.
  • Rivers and water bodies: Himalayan rivers (Ganga, Brahmaputra, Indus system), Peninsular rivers (Cauvery, Krishna, Godavari, Mahanadi, Narmada), Tamil Nadu rivers (Cauvery, Palar, Vaigai, Tamiraparani, Bhavani), major dams (Mettur, Bhakra-Nangal, Hirakud, Tehri).
  • Climate: Monsoon mechanism (SW and NE monsoon), rain shadow effect, Tamil Nadu and the NE monsoon (60% of annual rainfall), climate types, cyclones.
  • Natural resources and agriculture: Soil types (alluvial, black, red, laterite), forest types (tropical, deciduous, mangrove), mineral resources (coal, iron ore, bauxite, Magnesite in Salem TN), oil and gas, energy sources (solar, wind — Muppandal TN).
  • Tamil Nadu geography: Districts (38), hill ranges (Nilgiris, Palani, Anamalai, Kolli, Javadi, Shevaroy), Coromandel Coast (1,076 km), Pulicat Lake, Gulf of Mannar, Palk Strait, Sethusamudram, important towns and their significance.
  • Population and human geography: Census data, density, urbanisation, migration, demographic dividend, major cities.

Unit IV — History and Culture of India

History is one of the highest-scoring subjects in Group I. Tamil Nadu history gets a larger share than in other TNPSC exams.

  • Ancient India: Indus Valley Civilisation (Harappa, Mohenjo-daro, Lothal, Dholavira — script undeciphered, grid planning, Great Bath), Vedic period (Rigveda, varna system), Mahajanapadas, Buddhism (4 Noble Truths, Eightfold Path, Bodh Gaya), Jainism (Mahavira, 5 vows).
  • Maurya Empire: Chandragupta Maurya (321 BCE), Arthashastra (Chanakya), Ashoka, Kalinga War (261 BCE), Dhamma, Rock Edicts, National Emblem (Sarnath Lion Capital).
  • Gupta Golden Age: Samudragupta, Chandragupta II (Vikramaditya), Aryabhatta (pi, earth's rotation), Kalidasa (Shakuntala), Nalanda University.
  • Medieval India: Delhi Sultanate (Qutb Minar, Alauddin Khilji's market reforms), Mughal Empire — Babur (Panipat 1526), Akbar (Sulh-e-Kul, Mansabdari, Fatehpur Sikri), Jahangir, Shah Jahan (Taj Mahal), Aurangzeb (jizya, Deccan campaigns, decline).
  • Tamil Nadu history: Sangam age (Cheras, Cholas, Pandyas — Tolkappiyam), Pallava dynasty (Narasimhavarman I, Mamallapuram), Bhakti movement (63 Nayanmars, 12 Alwars), Chola Empire (Raja Raja I — Tanjore Brihadeeswarar, Rajendra I — Gangaikonda Cholapuram, naval expedition 1025 CE — 3 UNESCO temples), Vijayanagara (Krishnadevaraya), Nayaks (Thanjavur, Madurai, Gingee).
  • Advent of Europeans: Vasco da Gama 1498, Portuguese (Goa), Dutch (Pulicat TN), British East India Company (Fort St. George Madras 1644), French (Pondicherry), Battle of Plassey 1757, Battle of Wandiwash 1760.
  • British rule and Tamil Nadu: Anglo-Mysore Wars (Hyder Ali, Tipu Sultan — 4 wars, Seringapatam 1799), Polygar Wars (Kattabomman — Panchalamkurichi, hanged 1799), Marudu Brothers, Permanent Settlement (Cornwallis), Doctrine of Lapse (Dalhousie), Revolt of 1857.

Unit V — Indian National Movement

Freedom struggle questions appear in both Prelims and Mains. Tamil Nadu's contribution (VOC, Bharathi, Rajaji, Vedaranyam) is asked specifically in Group I.

  • Indian National Congress (INC): Founded 1885 (A.O. Hume, Bombay), first president W.C. Bonnerjee, Moderates (Dadabhai Naoroji — Drain Theory, Gokhale) vs Extremists (Tilak — "Swaraj is my birthright", Lal-Bal-Pal), Surat Split 1907.
  • Swadeshi Movement (1905–11): Partition of Bengal (Curzon 1905), boycott of British goods, Tamil Nadu leaders — V.O. Chidambaram Pillai (VOC — Swadeshi Steam Navigation Company, "Kappalottiya Tamizhan"), Subramania Bharati (Bharathiyar — patriotic poems, Pondicherry exile).
  • Non-Cooperation Movement (1920–22): Jallianwala Bagh (April 13, 1919 — General Dyer, 379+ killed), Rowlatt Act, boycott of schools/courts/councils/foreign cloth. Ended after Chauri Chaura (Feb 1922).
  • Civil Disobedience Movement (1930–34): Dandi March (March 12 – April 5, 1930 — 388 km, Sabarmati to Dandi), Gandhi-Irwin Pact 1931, Round Table Conferences. Tamil Nadu: Vedaranyam Salt Satyagraha (Rajagopalachari, Tiruchirappalli to Vedaranyam).
  • Quit India Movement (1942): "Do or Die" (August 8, 1942), leaders arrested August 9, underground leaders (Aruna Asaf Ali, JP Narayan), Usha Mehta secret radio.
  • Towards independence: INA and Subhas Chandra Bose (Azad Hind Fauj, "Chalo Delhi", died 1945), Naval Mutiny 1946, Mountbatten Plan, Indian Independence Act July 18, 1947, August 15, 1947, Partition.
  • Tamil Nadu in the freedom struggle: Social reform movements, Periyar's Self-Respect Movement, C. Rajagopalachari (Rajaji) — led Vedaranyam march, first Indian Governor-General (1948–50).

Unit VI — Indian Polity

Polity is heavily tested in Mains Paper II. Key articles, amendments, and institutional roles must be memorised precisely.

  • Constitution: Constituent Assembly (1946, Dr. Rajendra Prasad — president, Dr. Ambedkar — Drafting Committee chair), adopted Nov 26 1949, in force Jan 26 1950. Lengthiest written constitution. Borrowed features (Parliamentary system from UK, FRs from USA, DPSP from Ireland, Federal from Canada).
  • Preamble: Sovereign, Socialist (42nd Amendment), Secular (42nd Amendment), Democratic, Republic. Justice, Liberty, Equality, Fraternity.
  • Fundamental Rights (Art 14–35): Right to Equality (14–18), Right to Freedom (19–22 — 6 freedoms under Art 19), Right against Exploitation (23–24), Right to Freedom of Religion (25–28), Cultural and Educational Rights (29–30), Right to Constitutional Remedies (32 — "heart and soul" — Ambedkar).
  • DPSP (Art 36–51): Non-justiciable but fundamental to governance. Categories: Socialist, Gandhian, Liberal-Intellectual. Fundamental Duties (Art 51A) — added by 42nd Amendment (1976), 11 duties.
  • Parliament: Art 79 — President + Rajya Sabha + Lok Sabha. Rajya Sabha — 250 max, 6-year term, elected by MLAs, VP as Chairman. Lok Sabha — 552 max, 5-year term, Speaker certifies Money Bills. Money Bill (Art 110) — only in LS, RS can only recommend.
  • President (Art 52): Elected by Electoral College (MPs + MLAs). 5-year term. Pardoning power (Art 72). Emergency powers (Art 352, 356, 360). VP (Art 63) — ex-officio RS Chairman, elected by MPs only.
  • Constitutional bodies: Election Commission (Art 324), CAG (Art 148), UPSC (Art 315), Finance Commission (Art 280 — every 5 years, 15th FC gave 41% devolution).
  • Panchayati Raj: 73rd Amendment (1992) — Part IX, 11th Schedule (29 subjects), 3-tier structure (Gram Panchayat, Panchayat Samiti, Zila Parishad), Gram Sabha. 74th Amendment — Urban local bodies, 12th Schedule (18 subjects). Tamil Nadu: 50% reservation for women.
  • Key Amendments: 1st (Ninth Schedule), 24th (Parliament can amend FRs), 42nd (Socialist/Secular/Integrity + FDs), 44th (property removed from FRs), 52nd (anti-defection), 61st (voting age 18), 73rd/74th (local bodies), 86th (RTE), 101st (GST), 103rd (EWS reservation).

Unit VII — Indian Economy

Economy questions combine theory (planning, banking) with current data (GDP, inflation, schemes). Mains Paper II requires structured answers with figures and examples.

  • Economic planning: Five Year Plans (1951–2017) — 1st (agriculture), 2nd (Mahalanobis model — heavy industry), 5th (poverty removal), 6th (market orientation). NITI Aayog replaced Planning Commission in 2015.
  • Poverty and unemployment: Absolute vs relative poverty, BPL definitions, types of unemployment (structural, cyclical, frictional, disguised — disguised most common in Indian agriculture), MGNREGS (100 days work guarantee).
  • Agriculture: Green Revolution (M.S. Swaminathan — HYV seeds, fertilisers, irrigation), MSP (Minimum Support Price, 23 crops), FCI (Food Corporation of India), APMC, PM Kisan, PM Fasal Bima Yojana, crop seasons (Kharif/Rabi/Zaid, Tamil Nadu: Kuruvai/Samba/Navarai).
  • Banking and RBI: RBI (est. 1935, nationalised 1949, HQ Mumbai) — monetary authority, currency issuer, banker to government. Monetary policy tools: Repo rate, Reverse Repo rate, CRR, SLR, MSF. MPC (6 members, inflation target 4% ±2%). Bank nationalisation: 1969 (14 banks) and 1980 (6 banks). NABARD (1982 — agriculture), SIDBI (SMEs), NHB (housing). WTO (1995), FEMA 1999.
  • 1991 reforms (LPG): Liberalisation (abolished License Raj), Privatisation (PSU disinvestment, DIPAM), Globalisation (WTO, FDI, current account convertibility 1994). Finance Minister: Manmohan Singh; PM: P.V. Narasimha Rao.
  • Taxation and budget: Direct taxes (income tax, corporate tax) vs indirect taxes (GST — July 1, 2017, 101st Amendment). GST Council. Union Budget (presented by Finance Minister, passed in Lok Sabha). Fiscal deficit, revenue deficit, primary deficit.
  • External sector: BoP (current account + capital account), India's trade deficit (goods) vs services surplus (IT/BPO), remittances (~$85 billion — world's largest receiver), forex reserves (~$580–600 billion), managed float exchange rate.
  • Tamil Nadu economy: GSDP, key industries (automobiles — Chennai, textiles — Coimbatore/Erode/Tiruppur, leather — Vellore, IT — Chennai), welfare schemes (Kalaignar/CM schemes), agriculture (Cauvery delta rice, Coimbatore cotton).

Unit VIII — Indian/Tamil Nadu Administration and Social Justice

This unit has higher Mains weightage in Group I because candidates may become IAS/IPS/IFS officers. Tamil Nadu administration, welfare schemes, and social justice issues are tested in both Papers I and II.

  • Indian administration: Three tiers — Union, State, Local bodies. IAS/IPS/IFS — All India Services. Central Secretariat, Cabinet Secretariat, PMO. State administration: Governor, Chief Minister, Cabinet, Secretariat.
  • Tamil Nadu administration: 38 districts. District Collector — head of district administration, land revenue, law and order, disaster management, election management. Block Development Officer (BDO), Village Administrative Officer (VAO). Commissionerate system for urban areas.
  • Judiciary: Supreme Court (Art 124) — Original, Appellate, Advisory, Writ jurisdiction. High Courts — Madras High Court (est. 1862, one of India's oldest). Subordinate courts — District Courts, Sessions Courts, Munsiff Courts. Writs: Habeas Corpus, Mandamus, Prohibition, Certiorari, Quo Warranto.
  • Centre-State relations: Legislative relations (Union List, State List, Concurrent List — Art 246), Administrative relations, Financial relations, Inter-State Council, Zonal Councils, Finance Commission. Emergency provisions (Art 352, 356, 360) and their impact on federalism.
  • Social Justice and Welfare: Reservation policy (SC/ST/OBC) — constitutional basis (Art 15, 16), creamy layer, 50% cap (Indra Sawhney case), 103rd Amendment (EWS 10%). Tamil Nadu: 69% reservation (challenged in courts). Welfare schemes for women, children (ICDS, Mid-Day Meal — TN introduced first), disabled, elderly.
  • Tamil Nadu welfare schemes: CM schemes (Amma Unavagam, Kalaignar Noon Meal, Amma Two-Wheeler scheme), health (Chief Minister's Comprehensive Health Insurance Scheme), education (uniform/book/cycle/laptop schemes), housing (PMAY), employment (MGNREGS implementation in TN).
  • Social reform movements in Tamil Nadu: Periyar (Self-Respect Movement, 1925), EVR and anti-Brahminism, Dravidam, SNDP, Adi Dravidar movements, Bhakti saints (Nayanmars, Alwars), Maraimalai Adigal (Pure Tamil movement), Kandukuri Veeresalingam (Andhra — widow remarriage).
  • Governance and ethics: Right to Information Act (2005), Lokpal and Lokayukta Act (2013), Citizens' Charter, e-governance, Good Governance Day, transparency, accountability, integrity in public service.

Aptitude and Mental Ability

Although not a separate unit in the TNPSC syllabus document, Aptitude and Mental Ability is explicitly part of the Prelims paper with approximately 25–35 questions. It is not tested in Mains.

  • Arithmetic: Number system, HCF and LCM, simplification, percentage, profit and loss, simple and compound interest, ratio and proportion, average, time and work, time-speed-distance, age problems.
  • Mental Ability and Reasoning: Number series, letter series, coding-decoding, blood relations, direction sense, analogy, odd-one-out, seating arrangement, calendar and clock problems.
  • Data Interpretation: Bar charts, pie charts, line graphs, tables — reading and interpreting data, percentage calculation from charts.
  • Mensuration and Geometry: Area and perimeter (triangle, rectangle, circle, trapezium), volume (cube, cylinder, cone, sphere).

How to Convert the Syllabus into a Study Plan

The syllabus above is the complete boundary. Nothing outside these units will appear in Group I. Use it to plan your calendar and track progress.

  • First pass (Days 1–45): Cover Units I–VIII once. Use one MDX note per topic, read it fully, write 5 key facts, solve 5 previous-paper questions.
  • Second pass (Days 46–90): Revise by subject, not by unit. Focus on weak areas identified in first pass. Add current affairs daily (30 min).
  • Third pass (Days 91–120): Mixed prelims mock tests (200Q, 3 hours), review every wrong answer. For Mains candidates: start answer writing weekly.
  • Final 30 days: Short notes only. Previous paper analysis. Tamil eligibility daily practice. Mock interview preparation if shortlisted for Mains.
  • High-frequency units based on past papers: Unit III (Geography) and Unit VIII (Administration/TN) tend to have the most Group I-specific questions. Prioritise these.

Group I Syllabus Breakdown

The Group I syllabus should be split by stage and paper. Start with the official scheme, then map each syllabus area to study sources, previous papers, revision notes, and mock-test practice.

Paper or Stage
What to Study
Priority
How to Prepare
Preliminary examination
General Studies, aptitude and mental ability, Tamil Nadu history, polity, geography, economy, science basics, and current affairs.
High for coverage and speed.
Use objective practice after each unit, then mixed mocks after one syllabus pass.
Mains written examination
Descriptive General Studies papers, Tamil Nadu administration, governance, social issues, economy, environment, and essay-style answers.
High for serious candidates from the first month.
Write answers weekly with headings, examples, data, diagrams, and direct conclusions.
Tamil eligibility
Tamil language paper or qualifying component as notified in the active scheme.
Must not be ignored.
Use regular short practice instead of leaving it until after prelims.
Interview or oral test
Profile, native district, degree background, public administration, current issues, and service preference.
Begin light preparation after mains base.
Prepare concise answers and Tamil Nadu administrative examples.

High Priority

  • General studies
  • Aptitude and mental ability
  • Tamil eligibility
  • Previous-paper repeated topics

Medium Priority

  • Tamil Nadu administration
  • Essay and descriptive papers
  • Current affairs linked to Tamil Nadu and the active exam stage
  • Mock-test analysis after first syllabus coverage

Do Not Skip

  • Tamil eligibility or language component where notified
  • Aptitude and mental ability if it appears in the scheme
  • Notification-specific document and qualification rules

Source Mapping

Do not attach every popular book to every topic. Use school books for foundations, official syllabus headings for boundaries, previous papers for priority, and one main source for deeper subject coverage.

  • General Studies: use Tamil Nadu school-book foundations, concise notes, and previous TNPSC questions.
  • Aptitude: use formula sheets, daily small practice sets, and mistake logs instead of only reading solved examples.
  • Tamil eligibility or General Tamil: use grammar, literature, author facts, and repeated previous-paper patterns.
  • Current affairs: maintain Tamil Nadu, India, economy, science, environment, and scheme notes in separate headings.
  • Official material: use notification, syllabus, scheme, previous papers, answer keys, and dashboard updates as final boundaries.

Time Plan

The syllabus should decide your calendar. Finish one clear first pass, then move into revision, previous papers, mixed tests, and final short notes.

  1. 1.Days 1-7: Read notification, print syllabus, identify paper/stage pattern, and mark eligibility or document risks.
  2. 2.Days 8-30: Complete the first pass of high-priority syllabus areas with short notes and topic-wise practice.
  3. 3.Days 31-60: Add medium-priority areas, previous-paper classification, current affairs revision, and weekly mixed tests.
  4. 4.Days 61-90: Shift into full mocks, error-log revision, repeated facts, formulas, Tamil practice, and document readiness.
  5. 5.Final 15 days: Stop collecting bulky new material; revise short notes, official instructions, hall-ticket rules, and repeated mistakes.

What to check first

  • Open the active notification and the TNPSC syllabus page before following any book or coaching plan.
  • Confirm whether the paper is SSLC, higher-secondary, degree, diploma, ITI, or technical-subject standard.
  • Separate Tamil eligibility, General Studies, Aptitude, and post-specific subject papers.

How to use the syllabus

  • Convert every syllabus unit into a checklist.
  • Mark PYQ frequency beside each unit after solving previous papers.
  • Revise high-fact areas weekly: Tamil Nadu history, polity, schemes, geography, and current affairs.

Official Links

notificationTNPSC notificationsresourceAnnual plannersyllabusSyllabusresourceScheme of examinationresourceExam dashboardresourcePrevious year question papers