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TN SSLC Syllabus 2021

The Tamil Nadu board publishes the TN SSLC syllabus for 2021 on the official website - and the syllabus is also available on this page for students to download. The TN SSLC syllabus is available in two mediums. One in the Tamil medium and the other in the English medium. TN SSLC exam question papers are prepared based on the syllabus provided. Analyzing the syllabus helps the students in understanding the objectives of the final exam and score good marks.


Table of Contents

TN SSLC/10th Syllabus 2021 Highlights

The Tamil Nadu board publishes the TN SSLC syllabus 2021 as PDF files which are easy for students to download. The important dates and details regarding the examination are given below.

Name of the board  Directorate of Government Education Tamil Nadu
Class Class 10th (SSLC)
Category TN SSLC syllabus 2021
Official website

TN 10th Class Examination Syllabus 2021

Find below the links to download the syllabus for Tamil Nadu 10th class examinations in Tamil and English medium respectively.


PDF (Tamil) PDF (English)


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Social Science 

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TN SSLC Examination Subject-Wise Syllabus 2021

Students studying for the exams should go through the entire Tamil Nadu 10th syllabus 2021, which details the chapters and topics that must be studied. For better exam planning, students should split the TN 10th syllabus 2021 into sections. Candidates can find below the subject-wise syllabus to prepare for Tamil Nadu SSLC examinations 2021.

TN SSLC Science Syllabus

Find below the detailed TN 10th class examination Science syllabus 2021.



1. Heredity and Evolution


1.1 Heredity

1.2 Variations

1.3 Evolution

1.4 Speciation

1.5 Human evolution

1.6 Evolution tree

1.7 Genetic engineering

1.8 Biotechnology and cloning

1.9 Stem cell-Organ culture

1.10 Microbial production.

1.11 Biosensor – Biochips

1.12 Science today – Gene Therapy

2: Immune System


2.1 Health and its significance

2.2 Diseases and causes

2.3 Diseases caused by microbes and prevention

2.4 Modes of transmission

2.5 Immunization

2.6 Treatment and prevention

2.7 Biotechnology in Medicine

2.8 HIV and Prevention

3: Structure & Function of the Human Body – Organ System

3.1 Nervous system

3.2 Endocrine system

3.3 Cell division - Stages of Meiosis

3.4 Heredity

4: Reproduction in Plants

4.1 Modes of reproduction - vegetative, asexual, and sexual reproduction in plants

4.2 Pollination

4.3 Fertilization

4.4 Fruits and seeds

5: A Representative Study of Mammals Morphology

5.1 Habitats

5.2 Adaptations

5.3 Basic Physiological Functions.

5.4 Circulatory system in man.

5.5 Excretory system in man.

5.6 Relationship of structure to functions

5.7 Animal Behaviour

5.8.1 Behaviour (social, reproductive, parental care)

5.8.2 Some case studies from researchers (animal behavior)

6: Life Processes

6.1 Definition

6.2 Types of nutrition and the human digestive system

6.3 Respiration

6.4 Transportation in plants-water and minerals and animals - blood circulation

6.5 Excretion in plants and animals

6.6 Nervous system

6.7 Coordination in plants

6.8 Movement due to growth

6.9 Hormones in animals

7: Conservation of the Environment

7.1 Biodegradegradable non-biodegradable wastes

7.2 Water management

7.3 Wildlife sanctuaries

7.4 Balance in Ecosystem

7.5 Coal and petroleum

7.6 Green chemistry

8: Waste Water Management


8.1 Journey of water

8.2 Sewage

8.3 Treatment

8.4 Domestic practices

8.5 Sanitation and diseases

8.6 Alternate arrangement for sewage disposal

8.7 Sanitation in public places

8.8 Energy Management

8.8.1 Energy audit (home, school)

8.8.2 Renewable sources (solar, hydrogen, wind)

8.8.3 Non–renewable sources—(coal, petroleum, natural gas)

9 Solutions

9.1 Solute and Solvent

9.2 Types of Solutions

9.3 Solubility

9.4 Factors Affecting Solubility

9.5 Problems

10: Atoms and Molecules


10.1 Modern atomic theory

10.2 Avogadro Hypothesis

10.2.1 Atomicity

10.2.2 Relation between vapor density and molecular mass of agas

10.3 Difference between Atom and Molecules

10.4 Relative Atomic Mass

10.5. Relative Molecular mass

10.6 Mole Concepts

10.6.1 Mole-Definition

10.6.2 Problems based on mole concept

11: Chemical Reactions 

11.1 Types of chemical reactions

11.2 Rate of the chemical reaction

11.2.1 Factors influencing the rate of the chemical reaction

11.3 Acids

11.3.1 Classification of acids

11.3.2 Chemical properties of acids

11.4 Bases

11.4.1 Classification of bases

11.4.2 Chemical properties of bases

11.4.3 uses of bases

11.5 Identification of acids and bases

11.6 pH scale

11.6.1 pH paper

11.6.2 Importance of pH in everyday life.

11.7 Salts

11.7.1 Classification of salts

11.7.2 Uses of salts

12: Periodic Classification of Elements 

12.1 Modern periodic law

12.2 Modern periodic table

12.3 Characteristics of the modern periodic table

12.4 Metallurgy

12.4.1 Introduction

12.4.2 Terminologies in metallurgy

12.4.3 Differences between Minerals and Ores

12.5 Occurrence of metals

12.6 Metallurgy of Al, Cu, and Fe

12.6.1 Metallurgy of Aluminium

12.6.2 Metallurgy of Copper 12.6.3 Metallurgy of iron

12.7 Alloys

12.7.1 Methods of making alloys

12.7.2 Copper Aluminium and Iron Alloys

12.8 Corrosion

12.8.1 Methods of preventing corrosion

TN SSLC History Syllabus

Find below the detailed TN 10th class examination History syllabus 2021.



Unit 1

The rise of Imperialism Factors-forms-methods conquest of India, China, and its effects

Unit 2

First world war-causes, Course-Effects. League of Nations and its failure.

Unit 3

The world between the world wars – Economic depression – Rise of Fascism and Nazism.

Unit 4

Second world war-Causes- Course- Effect UNO and its achievements.

Unit 5

The great revolt of 1857-Social, religious reform movements–Cause for the rise of national movements-Pre-Gandhian Era and Gandhian Era.

Unit 6

The social-religious reform movement in the 19th century Raja Rammohan RaiAnne Besant-Dayananda Saraswathi Swamy Vivekanandha-Ramalinga Adigalar.

Unit 7

Causes for the rise of Nation Movements-Pre-Gandhian EraGandhian Era-Role of Tamilnadu in Freedom struggle

Unit 8

Social Transformation in Tamilnadu

TN SSLC Geography Syllabus

Find below the detailed TN 10th class examination Geography syllabus 2021.



Unit 1






Administrative Divisions 

India - Physiography 



Unit 2




National Resources 


National vegetation 


Unit 3



Agriculture and Industry 

Agriculture – types and distribution 

Industries- Location factors grow and Mineral-based Industries-some important

Unit 4

Environmental issues

Unit 5









Trade, Transport, and communication 

India’s internal and international trade 

Land transport-roadways and railways 

water transport and air transport 

personal and mass communication 

Remote sensing 

Remote sensing-meaning and types 

India’s remote sensing programs 

Geographic information system and global positioning system – their advantages and uses

TN SSLC Economics Syllabus

Find below the detailed TN 10th class examination Economics syllabus 2021.



Unit 1


National Income

Basic Concepts- Methods of Calculating national IncomeNeed for the study of National Income-Role of Government in Economic development

Unit 2


Indian Economy after Independence

Objectives of Five years plan Eleventh Five-year plan agricultural Development - Economic Reforms of 1991- Science and Technology-Tele Communication and Information TechnologyEducational Achievement - Socio-Economic development in Tamilnadu

TN SSLC Mathematics Syllabus

Find below the detailed TN 10th class examination Mathematics syllabus 2021.



I. Theory of Sets






Properties of operations on sets

De Morgan’s law verification using example Venn diagram

The formula for n A B C ( ) È È


II. Sequences and Series of Real Numbers







Arithmetic Progression (A.P)

Geometric Progression (G.P)


III. Algebra







Solving linear equations


Synthetic division

Greatest common divisor (GCD) and Least common multiple (LCM)

Rational expressions

Square root

Quadratic Equations

IV. Matrices






Types of matrices

Addition and subtraction


Matrix equation

V. Coordinate Geometry






Revision: The distance between two points

Section formula, Midpoint formula, Centroid formula

Area of a triangle and quadrilateral

Straight line

VI. Trigonometry





Heights and distances

VII. Geometry





Basic proportionality theorem (with proof)

The converse of the basic proportionality theorem (with proof)

Angle bisector theorem (with proof)

The converse of Angle bisector theorem (with proof)

Similar triangles

VIII. Measurements




Surface Area and Volume of Cylinder, Cone, Sphere, Hemisphere, Frustum

Surface area and volume of combined figures iv. Invariant volume

TN SSLC Civics Syllabus

Find below the detailed TN 10th class examination Civics syllabus 2021.



Unit 1

India and world peace

Unit 2

Democracy-Unity in Diversity

Unit 3

Consumer Rights

How to Download TN SSLC Textbooks?

Tamil Nadu board publishes the updated TN SSLC textbooks on the official website of the board. Students can download them directly from the board's official portal. The following steps are for downloading the TN SSLC syllabus from the official website.

Step 1: Visit the official website of the Tamil Nadu board -

Step 2: Click on the "Download" option to download the syllabus PDF file.

TN SSLC Syllabus 2021 .d

Step 3: A new window will pop up with the syllabus PDF.

Step 4: Download the syllabus PDF and save it for future reference.

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