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  • Last Modified 28-03-2024

Tamil Nadu Class 12th Notes


Tamil Nadu Class 12 Notes: Taking notes is a vital learning approach, despite the tremendous amount of information available in electronic media. No matter from which board the students are, referring to the notes can always help them perform well in the exam. Among all the boards in India, Tamil Nadu Board is an important state board that conducts Classes 10 and 12 board exams every year. Thorough preparation is required to perform well in the board exams, and the best way for this is to refer to Tamil Nadu Class 12 Notes. 

Students can prepare their notes themselves after reading the textbooks. To help the students, we’ve given some important points from some of the essential topics in the TN Board textbooks. Students can find Tamil Nadu Class 12 Physics notes, Chemistry notes, and so on in this article. Read on. 

Tamil Nadu 12th Boards: An Overview

The Tamil Nadu State Board has been entrusted with administering the Tamil Nadu State Board Class 12 Exam to students enrolled in the State Board’s 12th grade. The mark certificates provided to students in Classes 10th and 12th are considered an important and valuable document for continuing education and career hunting. Given below is a brief overview of Class 12 TN board exams. 

Name of the BoardTamil Nadu State Board
Class12th Class   
Result announcement date   June 20, 2022
Article about   Tamil Nadu Board Class 12th Exams   
Official Website   tnresults.nic.in   

Tamil Nadu Class 12 Revision

Students can use their TN Board Class 12 notes to prepare for any future competitive exams. Examining the notes that students have written will be beneficial in assisting them in completing long chapters too. The TN Class 12 revision notes make it easy for students to re-examine the chapters in an efficient and straightforward manner.

The Class 12 notes on Embibe are prepared by very efficient educators who can be trusted. The instructors who prepare the TN Class 12 notes are dedicated and trained to give students with the relevant concepts and ideas for the examination. The important notes will assist a student in achieving a high grade.

Learn 12th Tamil Nadu State Board Exam Concepts

Tamil Nadu Class 12 Physics Notes

TN Board Physics covers both theoretical and practical concepts. It is a crucial subject for JEE and NEET candidates. Some of the  key themes from some important chapters are listed below:

Tamil Nadu Class 12 Physics Chapter 1 Notes

  • The branch of Electricity that mainly deals with constant, stationary charges is named as Electrostatics. 
  • The object is said to be electrically neutral if its net charge is zero.
  • ‘The total electric charge in the universe is constant and charge can neither be created nor be destroyed. In any physical process, the net change in charge will always be zero.’
  • According to Coulomb’s law, the electrostatic force is directly proportional to the product of the magnitudes of the two point charges and inversely proportional to the square of the distance between the two point charges. 
  • According to Faraday, every charge in the universe produces an electric field in the surrounding space, and when another charge enters that field, it interacts with the electric field and experiences a force.

Tamil Nadu Class 12 Physics Chapter 2 Notes

  • The study of electric charge flow is known as current electricity.
  • When an electric field is applied to a conductor, the drift velocity is the average velocity obtained by the electrons inside the conductor. The mean time is the average time between subsequent collisions.
  • The resistance supplied to current flow by a conductor of unit length with a unit area of cross-section is defined as the electrical resistivity of a material.
  • The voltage across any conductor is directly proportional to the current running through it, according to Ohm’s law.

Ray Optics Tamil Nadu Class 12 Notes 

  • Reflection of light occurs when light bounces back into the same medium after colliding with a reflecting surface.
  • Angle of deviation of the light ray is the angle formed by the incident and deviated light rays.
  • A mirror is referred to as a convex mirror if the reflection occurs on a convex surface, and a concave mirror if the reflection occurs on a concave surface.
  • Paraxial rays are rays that move very close to the major axis and produce tiny angles with it.

Chapter 3 Moving Charges and Magnetism Tamil Nadu Class 12 Notes

  • Geomagnetism, also known as Terrestrial magnetism, is a branch of physics that studies the Earth’s magnetic field.
  • The declination, or the magnetic declination (D), is the angle formed by the magnetic meridian at a point and the geographical meridian. 
  • The product of the pole strength and magnetic length is defined as the magnetic dipole moment.
  • The magnetic field is the region or space around each magnet that can be sensed by placing another magnet in that region.
  • ‘When a magnetic needle or magnet isly suspended in two mutually perpendicular uniform magnetic fields, it will come to rest in the direction of the resultant of the two fields.’ This is Tangent’s law. 
  • The magnetising field is the magnetic field that is used to magnetise a sample or specimen.

Tamil Nadu Class 12 Biology Notes

Given below are some concepts from important chapters in Class 12 Biology. 

Human Health and Disease Tamil Nadu Class 12 Notes

  • A disturbance or malfunction of the mind or body is referred to as disease. Environmental variables, infections, genetic anomalies, and lifestyle changes can all cause morphological, physiological, and psychological alterations.
  • There are bacterial diseases, viral diseases, protozoan diseases, fungal diseases, helminthic diseases, and so on. 
  • Hygiene is a collection of practices used to keep one’s health in excellent shape. Hygiene, according to the World Health Organization (WHO), refers to ‘conditions and practices that aid in the maintenance of health and the prevention of disease transmission’.

Organism and Population Tamil Nadu Class 12 Notes

  • A habitat might be thought of as the organism’s ‘address’. The geographical range of a species is made up of all of its habitat areas. Food chains and food webs are formed when organisms in an ecosystem interact with one another and are members of trophic levels.
  • Chemical and physical elements that influence or affect organisms and their functioning in their environment are referred to as abiotic factors.
  • Adaptation is a dynamic evolutionary process in biology that allows organisms to adapt to their surroundings while also improving their evolutionary success.
  • Any group of organisms of the same species that may interbreed, inhabit a certain space, and act as part of a biotic community is referred to as a population.

Tamil Nadu Class 12 Chemistry Notes

Given below are some important concepts from some of the vital chapters in Chemistry. 

Electrochemistry Tamil Nadu Class 12 Notes

  • When an electric field is applied to an electrolytic solution, the ions in the solution conduct electricity by carrying charge from one electrode to the next. A conductivity cell is used to determine the conductivity of the electrolytic solution.
  • The equivalent conductivity of an electrolyte at infinite dilution is equal to the sum of the conductances of the anions and cations, according to Kohlrausch’s law.
  • A device that turns chemical energy into electrical energy and vice versa is known as an electrochemical cell. It is made up of two electrodes that are connected by an electrolyte solution.

Solid State Tamil Nadu Class 12 Notes

  • Based on the arrangement of their constituents, solids can be classified into two major categories:  solids with a crystalline structure and amorphous solids. 
  • Isotropy refers to the uniformity of a system in all directions. Isotropy in the solid state refers to physical qualities such as refractive index, electrical conductance, and so on having similar values in all directions, whereas anisotropy refers to a property that relies on the measurement direction.
  • Covalent solids are made up solely of covalent bonds that bind the constituents (atoms) together in a three-dimensional network.

Surface Chemistry Tamil Nadu Class 12 Notes

  • Surface chemistry is the discipline of chemistry that studies the processes that take place at the interfaces of phases, such as solid and liquid, solid and gas, and liquid and liquid. This is a topic that affects our daily lives as well as a variety of sectors, ranging from materials to medicine. 
  • A catalyst is a substance that changes the rate of a chemical reaction without changing its chemical composition. Catalysis is a term used to describe a process that involves the use of a catalyst.
  • A colloid is a homogeneous mixture of two substances in which one ingredient is disseminated in the other (in a lesser proportion) ( large proportion).
  • The substance that is present in the largest amount in a colloid is called the dispersing medium, while the substance that is present in the smallest amount is called the dispersed phase.

Tamil Nadu Class 12 Economics Notes

Given below are some important points  from some of the chapters in Class 12 Tamil Nadu Economics textbook. 

Introduction to Macroeconomics Notes

  • The study of the economy as a whole is known as macroeconomics. To put it another way, macroeconomics is concerned with aggregates like national income, employment, and output. ‘Income Theory’ is another name for macroeconomics.
  • The way individuals and institutions are connected to carry out economic activity in a specific area is referred to as the economic system.

Benefits of Preparing with Notes

  • Revision: Having self-prepared notes makes your revision stronger and more successful. It becomes easy to prioritise the main themes for rewriting after writing the important pointers of each chapter.
  • It aids in learning: Taking good notes can help anyone study more effectively. Students become actively involved in the learning process by identifying and organising the important topics/chapters for preparation and review by taking effective notes.
  • Taking notes on essential themes will help students remember them: Simply reading the chapter without taking notes will not help anyone recall the important points. It is recommended to take notes in order to better understand what the students are learning.


Here are some of the most commonly asked questions pertaining to Tamil Nadu Class 12th Notes.

Q.1: How to prepare Tamil Nadu Class 12 notes? 

Ans: The classes should be the starting point of the preparation. Note-taking should be encouraged by teachers. Have a rough notion of the major points that the lecturer will emphasise. Later on, familiarise yourself with the curriculum and take thorough notes on each chapter. Make it short and to-the-point, with emphasis on key points. Students can use Embibe to look up relevant topics and study materials.

Q.2: Will revision notes help me get good scores in TN board Class 12 exams?

Ans: Yes. If prepared well, revising with notes can help you score high in the exams. 

Q.3: What are some benefits of taking notes?

Ans: Taking notes help you in learning, revising, and remembering the concepts that you have learnt in the class and thus assist you in exam preparation. 

Q.4: Are TN Board exams difficult?

Ans: How difficult an exam is depends on how prepared you are for that particular exam. Hence, if you are prepared well, no exams will feel too complex. 

Q.5: Which apps are best for class 12 TN Board exam preparation?

Ans: A lot of apps offer Tamil Nadu Class 12 notes and preparation materials. Embibe is one among the best apps you can opt. 

Related Links:

Tamil Nadu State Board Class 12 ExamTamil Nadu 12th Board Timetable 2022 Released: Check Here
TN Board Results 2022 – Check ScorecardTN 12th Result Analysis 2022: Check Details

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