In short: Tamil Nadu SSLC Class 10 public exams 2027 will be held in March–April, conducted by the Directorate of Government Examinations (DGE). Around 9 lakh students appear for SSLC every year. The exams follow the Samacheer Kalvi curriculum. This guide compiles subject-wise important questions for Maths, Science, Social Science, English, and Tamil — identifying chapter-wise expected marks, most repeated question types, and high-priority topics. If you have limited time, this list tells you exactly what to focus on.
How This List Was Built
This compilation is based on:
- Previous year DGE SSLC question papers (2022–2026)
- Samacheer Kalvi textbook exercise patterns
- DGE model question papers
- Chapter-wise marks distribution from past exams
Important: This is not a leaked paper or guaranteed question list. These are high-probability topics based on pattern analysis. Study the entire syllabus, but prioritise these areas.
TN SSLC Exam Pattern (All Subjects)
| Part | Question Type | Marks |
|---|---|---|
| Part I | Choose the correct answer (MCQ) | 15 × 1 = 15 |
| Part II | Very short answer (2–3 lines) | 10 × 2 = 20 |
| Part III | Short answer (half page, with choice) | 10 × 5 = 50 |
| Part IV | Long answer (1 page, with choice) | 5 × 8 = 40 |
| Total | 100 (for Science) |
Note: Different subjects have slightly different patterns. Maths has 100 marks. Science has 75 marks theory + 25 practical. Social Science has 100 marks. Language subjects (Tamil, English) have their own structures. Check the DGE pattern for each subject.
Maths — Important Questions
TN SSLC Maths follows the Samacheer Kalvi textbook with strong emphasis on problem-solving.
Chapter-Wise Important Topics
| Chapter | Key Topics | Expected Marks | Priority |
|---|---|---|---|
| Relations and Functions | Types of relations, functions, composition | 8–10 | High |
| Numbers and Sequences | Arithmetic progression, geometric progression, series sums | 10–12 | Very High |
| Algebra | Simultaneous equations, quadratic equations, GCD/LCM of polynomials | 12–15 | Very High |
| Geometry | Similar triangles, Pythagoras theorem, tangent properties | 10–12 | Very High |
| Coordinate Geometry | Distance, midpoint, section formula, area of triangle | 8–10 | High |
| Trigonometry | Identities, heights and distances | 10–12 | Very High |
| Mensuration | Surface area and volume (cone, cylinder, sphere, frustum) | 8–10 | High |
| Statistics and Probability | Mean, median, mode, probability | 8–10 | High |
Most Repeated Maths Question Types
- Quadratic equations — Solve using formula, find nature of roots using discriminant. Appears every year (5–8 marks).
- AP and GP problems — Find nth term, sum of n terms, word problems. Appears every year (8–10 marks).
- Similar triangles — Prove similarity, find unknown sides using BPT (Basic Proportionality Theorem). Every year (5–8 marks).
- Trigonometric identities — Prove LHS = RHS type problems. Every year (5–8 marks).
- Heights and distances — Angle of elevation/depression word problems. Every year (5–8 marks).
- Mensuration — Combined solids (cone + hemisphere, cylinder + cone), surface area and volume. Every year (8 marks).
- Coordinate Geometry — Area of triangle using vertices, section formula application. Every year (5–8 marks).
- GCD and LCM of polynomials — Factorisation and finding GCD/LCM. Appears frequently (5 marks).
Maths Priority List
| Priority | Chapters | Why |
|---|---|---|
| Tier 1 (Must master) | Algebra, Trigonometry, Numbers and Sequences, Geometry | Together carry 40–50 marks |
| Tier 2 (Important) | Coordinate Geometry, Mensuration, Statistics | Together carry 25–30 marks |
| Tier 3 (Complete) | Relations and Functions, Probability | Together carry 10–15 marks |
Practice any chapter on Padhaao
AI tutor for CBSE, ICSE & 15 state boards · 10 learning modes · 3 free chapters daily
Science — Important Questions
TN SSLC Science has 75 marks theory + 25 marks practical (for a total of 100 marks in some exam configurations).
Chapter-Wise Important Topics
| Chapter | Key Topics | Expected Marks | Priority |
|---|---|---|---|
| Laws of Motion | Newton's laws, friction, inertia, F = ma problems | 8–10 | Very High |
| Optics | Reflection, refraction, lens formula, ray diagrams | 8–10 | Very High |
| Electricity | Ohm's law, resistance, power, household circuits | 8–10 | Very High |
| Chemical Reactions | Types of reactions, balancing equations | 5–8 | High |
| Acids, Bases, and Salts | pH scale, neutralisation, indicators | 5–8 | High |
| Carbon Compounds | Homologous series, functional groups, IUPAC naming | 5–8 | High |
| Heredity and Evolution | Mendel's laws, DNA, evolution concepts | 5–8 | High |
| Life Processes | Nutrition, respiration, transport, excretion | 8–10 | Very High |
| Coordination and Control | Nervous system, hormones, reflex arc | 5–7 | Medium |
| Environmental Management | Ecosystem, biodiversity, pollution | 3–5 | Medium |
Most Repeated Science Question Types
- Ohm's law numericals — Calculate resistance, current, voltage. Appears every year.
- Lens/mirror ray diagrams — Draw ray diagrams for convex/concave lens, locate image. Every year.
- Newton's laws application — Identify the law, solve F = ma problems. Every year.
- Mendel's experiment — Monohybrid/dihybrid cross, phenotypic and genotypic ratios. Every year.
- Balancing chemical equations — Write and balance equations for given reactions. Every year.
- Life Processes diagrams — Human digestive system, heart diagram, nephron. Every year.
- Carbon compound naming — IUPAC nomenclature for alkanes, alkenes, alkynes. Frequent.
- pH scale questions — Identify acidic/basic/neutral, pH of common substances. Frequent.
Science Diagram List (Must Practise)
| Diagram | Chapter | Marks Value |
|---|---|---|
| Human digestive system | Life Processes | 3–5 marks |
| Human heart (cross-section) | Life Processes | 3–5 marks |
| Nephron structure | Life Processes | 2–3 marks |
| Ray diagram — convex lens | Optics | 3–5 marks |
| Ray diagram — concave mirror | Optics | 3–5 marks |
| Reflex arc | Coordination | 2–3 marks |
| Electromagnetic spectrum | Physics | 2–3 marks |
| Carbon chain structures | Carbon Compounds | 2–3 marks |
Social Science — Important Questions
TN SSLC Social Science covers History, Geography, Civics, and Economics.
Chapter-Wise Important Topics
| Section | Chapter | Key Topics | Expected Marks |
|---|---|---|---|
| History | Indian National Movement | Quit India, INA, Partition | 10–12 |
| History | Post-Independence India | Constitution adoption, Five Year Plans | 5–8 |
| History | Tamil Nadu Freedom Struggle | V.O. Chidambaram, Subramania Bharati | 5–7 |
| Geography | India — Resources | Minerals, energy resources, conservation | 8–10 |
| Geography | India — Agriculture | Major crops, Green Revolution, food security | 8–10 |
| Geography | India — Industries | Major industries, industrial corridors | 5–8 |
| Geography | Tamil Nadu Geography | Rivers, crops, industries, climate | 5–8 |
| Civics | Indian Constitution | Preamble, Fundamental Rights, Union Govt | 10–12 |
| Civics | Local Government | Panchayati Raj, Municipalities | 5–7 |
| Economics | Indian Economy | GDP, sectors, poverty, employment | 8–10 |
| Economics | Tamil Nadu Economy | Agriculture, IT sector, industrial growth | 5–7 |
Most Repeated Social Science Question Types
- Indian National Movement events — Chronological order, significance of events (Quit India, Salt March, INA). Every year.
- Fundamental Rights — List and explain, difference between FR and DPSP. Every year.
- India Agriculture — Major crops, Green Revolution, irrigation methods. Every year.
- Tamil Nadu-specific questions — TN freedom fighters, TN geography, TN economy. Every year.
- Map pointing — Rivers, mountain ranges, industrial locations, crop regions. Frequent.
- Panchayati Raj — Three-tier system, 73rd Amendment. Frequent.
English — Important Questions
Key Focus Areas
| Section | Topics | Expected Marks | Priority |
|---|---|---|---|
| Prose | All prose chapters from textbook | 15–20 | High |
| Poetry | All poems — themes, figures of speech | 10–15 | High |
| Grammar | Tenses, voice, reported speech, articles, prepositions | 15–20 | Very High |
| Writing | Letter writing, essay, paragraph, report | 15–20 | Very High |
| Comprehension | Unseen passage — factual and inferential questions | 10 | High |
Most Repeated English Question Types
- Tense conversion — Change from active to passive voice, direct to indirect speech. Every year.
- Letter writing — Formal letter (to editor, to principal) and informal letter. Every year.
- Poem comprehension — Identify figures of speech (simile, metaphor, alliteration). Every year.
- Essay writing — Topics related to current issues, environment, education. Every year.
- Comprehension passage — Read and answer factual + inferential questions. Every year.
Tamil — Important Questions
Key Focus Areas
| Section | Topics | Expected Marks | Priority |
|---|---|---|---|
| Prose (Urai Nadai) | All prose lessons — themes, character analysis | 15–20 | High |
| Poetry (Padal) | All poems — meaning, literary devices | 10–15 | High |
| Grammar (Ilakkanam) | Syntax, morphology, literary grammar | 15–20 | Very High |
| Letter/Essay | Formal letter, essay, report writing | 10–15 | High |
| Comprehension | Seen and unseen passages | 10 | High |
Most Repeated Tamil Question Types
- Grammar exercises — Parts of speech, sentence types, literary grammar from Tholkaappiyam-based content.
- Poem explanation — Inner meaning, poet's intent, literary devices.
- Prose questions — Character analysis, theme, moral of the story.
- Letter writing — Formal letters in Tamil (application, complaint, request).
- Essay (Katturai) — Topics on education, environment, technology, Tamil Nadu culture.
Chapter-Wise Expected Marks Summary
| Subject | Highest-Weightage Chapters | Combined Marks |
|---|---|---|
| Maths | Algebra + Trigonometry + Numbers & Sequences | 35–40 marks |
| Science | Optics + Electricity + Life Processes + Laws of Motion | 30–40 marks |
| Social Science | Indian National Movement + Constitution + Agriculture | 30–35 marks |
| English | Grammar + Writing sections | 30–40 marks |
| Tamil | Grammar + Literature sections | 30–35 marks |
Study Priority Matrix
| Priority Level | What to Study | Time Allocation |
|---|---|---|
| Priority 1 — Must Complete | Tier 1 chapters in all subjects (listed above) | 50% of study time |
| Priority 2 — Important | Tier 2 chapters, previous year paper practice | 30% of study time |
| Priority 3 — Complete Coverage | Remaining chapters, revision of all topics | 20% of study time |
How to Use This List Effectively
- Start with Priority 1 chapters. These carry the most marks across all subjects.
- Solve previous year papers. DGE releases model papers on its website. Solve at least 3 years of papers per subject.
- Practise diagrams daily. Science diagrams alone carry 15–20 marks. Draw them from memory every day.
- Time yourself. Complete full papers within the allotted time. This builds exam stamina.
- Use the Samacheer Kalvi textbook only. The DGE paper is based on this textbook. Do not waste time on reference books.
Frequently Asked Questions
Are these the actual questions for TN SSLC 2027?
No. These are high-probability topics based on previous year analysis and DGE model papers. The actual questions will be different, but the topics and types are likely to be similar.
How many marks should I target in each subject?
Aim for 80+ in Maths (achievable with daily practice), 60+ in Science theory (diagrams and numericals help), 70+ in Social Science (content-based), and 70+ in languages (grammar sections are key).
Should I study from reference books or only Samacheer Kalvi?
Samacheer Kalvi textbooks only. The DGE exam is based entirely on these books. Solved exercises and textbook examples are the primary source of exam questions.
How important are diagrams in TN SSLC Science?
Very important. Diagrams carry 15–20 marks across the Science paper. Draw them neatly with labels. Practise from the textbook illustrations.
When do TN SSLC exams start in 2027?
TN SSLC exams typically start in March–April. The exact date sheet is released by DGE a few months before. Check the DGE Tamil Nadu website for official dates.
What is the pass mark for TN SSLC?
35% per subject. For Maths, that is 35 out of 100. For Science, the pass mark applies to theory + practical combined. But aim much higher — 70%+ opens better opportunities for Class 11 stream selection.
₹21/mo (annual plan)
Padhaao covers 17,000+ chapters across 17 boards
Your exact syllabus. 10 learning modes. 3 free daily. Pro for unlimited - ₹21/month (annual plan).
Want the full chapter with solved examples?
10 learning modes. Board-specific content. 3 free chapters every day.
Try it free