What Is the Chapter Wise Weightage for JEE Main

JEE Main is one of the toughest engineering entrance exams in India. Preparation for the exam is facilitated if you know the syllabus and weightage of various topics in the exam. Read on to know chapter wise weightage for JEE Main!

Chapter wise weightage for JEE Main Physics

Physics is generally considered as the hardest of all the three subjects in JEE Mains. Keeping this in mind, you must analyze the previous 10 years question papers of JEE Mains/AIEEE to get an idea of weightage, backed up by data.


Highest weightage is that of ‘Mechanics’, this includes all the questions of Optics, Electrostatics and Magnetism. So focus mainly on the mechanics part of class 11th for a clear understanding of the entire JEE Mains Physics.

Important Topics

  • Relative motion (Problem of river & boat), Projectile motion (Simple manipulation of the formulas of -Range, Maximum Height and Time of Flight), Conservation of momentum and also energy collisions (only standard questions are asked).
  • Newton’s gravitational law, Kepler’s laws, Satellites. Rigid body dynamics, Moment of inertia and dynamics of rotational motion.
  • Fluid Mechanics: Pascal’s law, Bernoulli’s principle, Viscosity & Reynolds’ number.
  • Simple Harmonic Motion, Transverse & Longitudinal waves: Superposition and Reflection, Standing waves & Beats, Doppler’s effect for both sound and light.

Heat & Thermodynamics

Every year, at least 3 to 4 questions are asked definitely from Heat and Thermodynamics.

Important Topics

  • Kinetic theory of gases (questions on Ideal Gases are asked), Calorimetry (Usually Principle based questions).
  • Detailed study of Adiabatic, Isothermal, Isochoric & Isobaric processes. First law of Thermodynamics and its applications, Second law of thermodynamics, Carnot Cycle, Refrigerators and Heat Pumps.

Electrostatics & Magnetism

5 to 6 questions are asked in JEE Mains from this section.

Important Topics

  • Coulomb’s Law, Electric Field, Field Lines and Flux, Continuous Charge Distribution and Gauss’s Law (Simple application based problems mostly)
  • Electrostatics of Conductors and Dielectrics, Capacitance and Capacitors (Problems on Parallel Plate Capacitor MUST be practiced)
  • Motion in Electric and Magnetic Field, Biot-Savart Law, Ampere Circuital Law and Working of Cyclotron.

Current Electricity, EMI, Alternating Currents

Relatively easy and the most scoring section of JEE Mains Physics. 4 to 5 questions are asked from these chapters.

Important Topics

  • Series and parallel arrangements of resistors and cells, Kirchhoff’s law and its simple applications and Heating effect of current. Wheatstone Bridge, Meter Bridge and Potentiometer (one question is sure shot from any of these bold topics).
  • Magnetic Flux and Faraday’s Laws of Induction, Motional EMF and Eddy currents, Inductance (Self & Mutual). AC voltage applied to LR, CR and LCR circuits, Working of AC Generator and DC motor.

Optics & Modern Physics

This is perhaps the easiest section to take care of considering that all the questions asked are completely formula based. 7 to 8 questions are asked in JEE Mains. So, do not think of leaving them AT ALL as they can help you score.

Important Topics

  • Questions from wave optics (Interference, Polarization, and Diffraction) are generally straight forward and you can solve them easily by just reading the question properly. For Ray Optics: Refraction at spherical surfaces and by lenses also, Refraction by Prism & dispersion.
  • Dual nature of matter, Atoms, Nuclei. Photoelectric effect, Bohr’s theory of hydrogen-like atoms, Characteristic and continuous X-rays.


JEE Mains Mathematics is considered to be the rank decider. Chapter-wise weightage is very important to get a clear idea about where to concentrate your efforts.


Most of the chapters of class XI make up this unit. 8 to 9 questions are asked in JEE Mains from Algebra.

Important Topics

  • Modulus and Conjugate of Complex numbers along with their properties, Cube Roots of Unity, Quadratic equations and location of their Roots (simple problems only are asked).
  • Matrices: Types and Operations, Adjoint and Inverse of a Matrix, Properties of Determinants. Permutations & Combinations (Simple statement based questions), Algebra of Events and Probability, Conditional Probability, Bayes’ Theorem
  • AP, GP, HP and their means, Sum of n terms etc, Binomial Theorem: general and middle terms. Calculation of Mean Deviation, Variance & Standard Deviation.

Coordinate Geometry, Vector & 3D Geometry

Consider that you will get only formula based fixed number of questions (7 to 8) from these chapters. However, not to be taken lightly, a lot of practice is required to avoid any silly or calculation mistakes in these chapters and also, to improve speed and comfort.

Important Topics

  • Distance of a Point from a Line and Distance between 2 parallel lines, Centroid, Orthocentre, Incentre and Circumcentre of a triangle.
  • Equation of a Circle and Conics in different forms, Equations of Tangent, Normal and Chord of contact of Circles and other Conics.
  • Direction cosines and Equation of Lines in Space, Angle and distance between 2 lines, Equation of Planes, Angle between two planes, Coplanarity of 2 lines.


This is the most important section because it has applications not just in Mathematics but in Physics & Chemistry as well. At least 8 to 9 question will be asked from this in JEE Mains.

Important Topics

  • Various functions and their graphs, Algebra of Limits, Derivatives of different types of functions and their Algebra, Continuity of a function. Rolle’s and Lagrange’s Mean Value Theorem, Rate of change of quantities.
  • Maxima and Minima (Statement based problems), Maximum and Minimum values of a function in closed intervals.
  • Indefinite & definite integration of various forms, Definite Integral as a limit of a sum, Area under any given Curve, General and Particular solutions of Differential Equations.


This is the smallest section in JEE Mathematics section and if you go by the weightage, it has the least. But, considering the fact that trigonometric ratios and concepts are being used in algebra (matrices, complex numbers) and in Calculus as well, this chapter needs to be given importance.

Important Topics

  • Trigonometric Functions: Domain, range, and graph, Trigonometric Identities and formulas, Trigonometric Equations and Inequations.
  • Inverse Trigonometric Functions: Domain, range and graph. Heights and Distances.


Chemistry is an asset in JEE Mains if you are good at it becoming which is quite easy. It helps you to fetch more marks in lesser time. If you have good bonding with the subject, you can solve chemistry part in half an hour. NCERT book is highly recommended for chemistry. On an average, equal number of questions are asked in JEE Mains from each of Physical, Inorganic, and Organic Chemistry.

Physical Chemistry

At least one question from each of topics given below is asked.

  • Laws of Chemical Combination, Mole concept & Stoichiometry, Simple problems related to finding molarity, molality, mole fraction are asked.
  • Atomic Structure: Dual nature of Radiation, Atomic Spectra, Bohr’s Model for Hydrogen and Hydrogen-like species, Quantum Mechanical Model-Finding Quantum numbers for any element.
  • Gaseous State: Kinetic Molecular Theory of Gases, Real Gas behavior, and Liquefaction of gases.
  • Solid State: Crystal Lattice and Unit cells, Close packed structures, and voids, Defects in Solids and their examples.
  • Solution: Types and Concentration, Vapour Pressure of a solution and Raoult’s law, Colligative properties of Solutions & Van’t Hoff factor ‘i’.
  • Thermochemistry: Enthalpy and Heat capacity, Gibb’s energy and Spontaneity. Hess Law is of utmost important.
  • Equilibrium: Factors affecting equilibrium-Le Chatelier’s Principle, Acids, Bases and Concept of pH, Hydrolysis of Salts and Buffer solutions.
  • Redox reactions & Electrochemistry: Redox Reactions-Types and Concept of Oxidation Number, Galvanic Cells: features and Electrode Potential, Conductance of Electrolytic Solutions.
  • Chemical Kinetics: Rate, Order and Molecularity of a reaction, Integrated rate equations and Half-life, Arrhenius Equation.
  • Surface Chemistry: Adsorption Mechanism, Types, Isotherms, Catalysis, Colloids and Emulsions: Classification and Properties.

Inorganic Chemistry

At least one question from each of topics given below.

  • Modern periodic table and Electronic configuration of Elements, Periodic Trends in Properties of Elements.
  • Chemical Bonding & Molecular Structure, VSEPR Theory, Valence bond theory and Hybridization.
  • s-Block Elements: Hydrides, General Characteristics of Compounds formed from S block elements.
  • p-Block Elements: General trends in the Properties of Compounds of P block elements, Important Compounds of Boron, Carbon, and Silicon, Important Compounds of Halogens and their properties.
  • Extraction of Metals: Processes of extraction of Metals from their ores, Electrochemical principles of metallurgy of d & f Block Elements.
  • Coordination Compounds: IUPAC Nomenclature and Isomerism of Coordination compounds, Werner’s theory, Valence bond theory & Crystal field theory.
  • Chemical Principles Involved in the Qualitative Salt Analysis and Qualitative and Quantitative analysis of Organic Compounds.

Organic Chemistry

9 to 10 questions will be most probably asked in JEE Mains. At least one question from each of the topics given below:

  • Basic Principles of Organic Chemistry: Structure and Nomenclature of Organic Compounds, Stereoisomerism in Organic Compounds and Electronic Displacement Effects in Covalent Bonds.
  • Hydrocarbons & Halides: Structure, Physical and Chemical Properties of Alkanes, Alkenes & Alkynes, Benzene, Haloalkanes & Haloarenes.
  • Oxygen containing compounds: Alcohols, Phenols & Ether, Aldehydes and Ketones: Physical and Chemical Properties. Carboxylic acids and their derivatives: Structure & Chemical Properties.
  • Nitrogen containing compounds: Amines & Diazonium salts and their Physical & Chemical properties.
  • Biomolecules: Monosaccharides-Structure, Physical and Chemical properties, Proteins and Enzymes: Structure and Properties, Nucleic Acids: Structure and Properties.
  • Polymers: Addition & Condensation Polymerisation: Mechanism and Examples along with their uses, Commercial Polymers.
  • Chemistry in Everyday life: Drugs-Classification and therapeutic Action, Soaps and Detergents.
  • Environmental Chemistry: Atmospheric Pollution and Control, Water Pollution and Control.

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One Response to What Is the Chapter Wise Weightage for JEE Main

  1. Santhosh April 4, 2018 at 8:07 am #

    I think it will help me..

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