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JEE Main Important Topics & Chapters: Weightage-wise breakdown

JEE Main Important Topics 2020: JEE Main is one of the toughest competitive exam for engineering aspirants. Rather than learning the formulae, chemical equations, steps for some questions and other rotting sections, go for the smarter way which is quick and easy. Every chapter in the JEE Main Syllabus is assigned a weightage of marks. Break down all these chapters in a 3-4 categories, such as most important chapters that carry high weightage of marks, important chapters that carry average weightage of marks and then least important chapters that hold the minimum weightage of marks.

Read the following article to know more about the JEE Main important topics and prepare for the exam accordingly. Here you go!

JEE Main Important Topics

First of all, let’s have a look on the exam pattern for JEE Main 2020. The exam will be conducted in both online and offline mode and will have 90 questions of 360 marks spread over three sections- Physics, Chemistry, Mathematics. All the sections will have 30 questions each and will be of 120 marks each. So, let us divide the JEE Main Important topics into the same three sections i.e. Physics, Chemistry and Mathematics.

JEE Main Important Topics

JEE Main Important Topics for Physics

The Physics section contains around 21 chapters and some of the most important chapters are-

  • Oscillations And Waves
  • Rotational Motion
  • Electrostatics
  • Atoms And Nuclei
  • Current Electricity
  • Laws of Motion
  • Magnetic effect of Current and Magnetism

The Oscillations and Waves chapter covers the maximum percentage of questions in the exam, which is around 10%. Other than these topics, we have seen questions from the topics like Electrodynamics, Modern Physics, Optics, etc. in the previous exams. So a student should first start with these topics as these topics have been frequently asked in the previous year papers. After completing these topics, you can pick the easiest topics like Unit and Dimensions, Measurement of errors and vectors. All you have to do is to understand the concepts of each topic.

JEE Main Important Topics for Chemistry

The Chemistry section contains around 30 chapters. As the numbers of chapters in Chemistry are more, you should intelligently divide your chapters. The most important chapters are-

  • Organic Compounds Containing Oxygen
  • Equilibrium
  • Chemical Kinetics
  • Transition Elements (d and f block)
  • s-block Elements
  • Chemical Bonding And Molecular Structure
  • Some Basic Principles Of Organic Chemistry
  • p-block Elements
  • Coordination Compounds
  • Chemical Thermodynamics

The Organic Compounds Containing Oxygen chapter covers the maximum percentage of questions in the JEE Main exam. All the above-mentioned topics are the most important topics, which will be definitely asked in the examination. After completing these chapters, you should move towards some important chapters – Organic Compounds Containing Nitrogen, Redox Reactions, Biomolecules, Electrochemistry, Atomic Structure, Polymers, Solid State, Some Basic Concepts in Chemistry and Classification of Elements and Periodicity in Properties. After completing these chapters, you can head towards the simpler chapters like Hydrogen, States of Matter, Hydrocarbons, Surface Chemistry, etc.

JEE Main Important Topics for Mathematics

The Mathematics section contains around 25 chapters. This can be the most scoring section but it requires more and more practice. The most important chapters are-

  • Integrals
  • Probability
  • Three Dimensional Geometry
  • Trigonometry
  • Vector Algebra
  • Conic Sections
  • Straight Lines
  • Sets, Relations and Functions
  • Matrices And Determinants

After completing these most important chapters, you should move towards the important chapters- Limits and Continuity, Quadratic Equations, Derivatives, Permutation and Combination, Complex Numbers, Circles, Binomial Theorem, Sequences and Series and Differential Equations.

After completing the above-mentioned topics, you can give your time to the simpler and less important chapters like Inverse Trigonometry, Heights and Distances, Application of Derivatives and Statistics.

These were the JEE Main important topics for 2020 session; all the students should make a proper subject wise plan to crack the JEE Main exam. Follow the sequence provided here and do a lot of practice, you will definitely succeed in your exam.

Subject-wise Topics With higher Difficulty level

Here we are describing topics with their difficulty level for each subject which are as follow:


Basic concepts contain 1 mark each

  • Units and Dimensions
  • Measurement of Errors
  • Vectors

Fundamental concepts which contain 2 marks each

  • Kinematics
  • Newton’s Laws of Motion
  • Friction

Easy topics which can help you to score good marks in JEE Main 2020

  • Work, Energy and Power
  • Electrostatics
  • Current Electricity
  • Wave Optics
  • Ray Optics

Absolutely important questions which contain 2-3 marks each

  • Centre of Mass, Momentum and Collision
  • Rotational Dynamics
  • Simple Harmonic Motion
  • Fluid Mechanics
  • Wave Motion and String Waves
  • Magnetism
  • Heat & Thermodynamics
  • Nuclear Physics
  • Modern Physics


Topics contain 1-2 marks (Fundamental section)

  • IUPAC Nomenclature
  • Periodic Table
  • Chemical Bonding

Topics contain easy & important questions (Scoring Section)

  • Mole Concept
  • Coordination Chemistry
  • Alcohol, Phenols and Ethers
  • p-Block element

Topics contains 2-3 questions & important

  • Atomic Structure
  • Gaseous State
  • Hydrocarbons
  • Aldehydes and Ketones
  • d & f Block Elements
  • General Organic Chemistry

Topics where you need to go through once while preparing

  • Chemical Equilibrium
  • Ionic Equilibrium
  • Thermodynamics
  • Hydrogen and its Compounds
  • s-Block Elements
  • Isomerism of Organic Compounds
  • Environmental Chemistry
  • Solid State
  • Chemical Kinetics
  • Electrochemistry
  • Solutions
  • Qualitative Salt Analysis
  • Alkyl Halides and Aryl Halides
  • Carboxylic Acids and their derivatives
  • Amines
  • Biomolecules
  • Polymers
  • Metallurgy
  • Surface Chemistry
  • Chemistry in Everyday Life

Topics which were previously asked in JEE Main/Advanced

  • Transition Element and Coordination Chemistry
  • Periodic Table and Representative Elements
  • Gaseous State
  • Atomic structure
  • Amines
  • Solution and Colligative Properties
  • General Organic Chemistry
  • Carboxylic Acids and Derivatives
  • Hydrocarbons
  • Carbohydrate, Amino Acids and Polymer


Topics contain 1-2 marks (Fundamental section)

  • Inverse Trigonometric Functions
  • Circles and Family of Circles
  • Sequence and Series

Topics contain easy and important

  • Applications of Derivative
  • Limit and Continuity
  • Matrices and Determinants
  • Straight Lines and Pair of Straight Lines

If you are in practice and attempting 4 to 6 question from each section you will become the master of Mathematics.

Topics contain 2-3 questions are also very important

  • 3-D Geometry
  • Probability and Statistics
  • Vector Algebra
  • Integration
  • Complex Numbers
  • Parabola
  • Trigonometric Ratios

Topics where you need to go through once during preparation

  • Logarithms
  • Quadratic Equations
  • Theory of Equations
  • Sets, Relations and Functions
  • Differentiation
  • Permutation and Combination
  • Binomial Theorem
  • Locus
  • Hyperbola
  • Ellipse
  • Fundamentals of Mathematics
  • Solution of Triangle

Topics previously asked in JEE Main/Advanced

  • Coordinate Geometry
  • Continuity/ Differentiability, Limits
  • Complex No., Quadratic Equation
  • Integral Calculus
  • Sequence and Series
  • Trigonometry

All the best!!

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