JEE Main 2019: Important Chapters That You Can’t Afford To Miss

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JEE Main 2019: Important Chapters That You Can’t Afford To Miss

“What to study?”

“What are the important chapters for JEE Main 2019?”

“What will be the weightage of chapters in JEE Main 2019?”

Are these questions bothering you? Well, you are not alone. Since National Testing Agency (NTA) has taken over the reins to conduct JEE Main, questions like these have been making rounds on many online platforms.

Well, you needn’t look any further if you are looking for answers. Let ’s take a look at the chapters that need maximum time investment.

Last Year Trends

Yes, last year trends are important and you must analyze them. Analyze the previous year trends and segregate your syllabus into the following categories:

  • Chapters that have high weightage but require minimum effort. Focus on these chapters as they shall yield maximum of results.
  • Chapters that have high weightage and require maximum effort. These chapters usually have difficult numerical problems and need a lot of practice to master them.
  • Chapters that have low weightage and require minimum effort. Once you have completed the chapters from the above-mentioned categories and you have some time left then you should touch-up on these chapters as well.

Let’s look at the topics from which the highest number of questions were asked in the previous year’s JEE Main examination:

SubjectsTopics & No. of Questions askedNo. of Questions Asked
ChemistryOrganic Chemistry

Physical Chemistry I

Inorganic Chemistry

Physical Chemistry II







Modern Physics

Heat and Thermodynamics





MathematicsDifferential Calculus

Integral Calculus

Co-ordinate Geometry

Probability, Matrix & Determinants, Trigonometry





These chapters will be the key for upcoming JEE Main too.

Also See: JEE Main Previous Year Question Papers

Subject wise Important Chapters

Before you start revising important chapters for JEE Main, you should know the syllabus in and out. Marking the important chapters is useful during revision sessions and last-minute brush-ups as well.

Our tech geeks have worked hard and analyzed previous years’ papers and compiled a list of the most important topics that you must study for JEE Main. Why should you trust us? We predicted last year’s JEE Advanced with 97% accuracy. These are the subject-wise important chapters:


  • Organic Chemistry: Basic principles of Organic Chemistry, Organic Compounds (Purification & Characterization), Hydrocarbons, Biomolecules Organic compounds containing Oxygen & Nitrogen.
  • Physical Chemistry: Basic concepts, States of matter, Chemical Bonding, Atomic Structure, Chemical Thermodynamics, Chemical Kinetics, Electrochemistry, Equilibrium, Molecular Structure and Redox Reactions.
  • Inorganic Chemistry: Classification of Elements & Periodicity in Properties, Process of isolation of Metals, p- Block Elements, s- Block Elements (Alkali & Alkaline), Hydrogen, Co-ordination Compounds and Environmental chemistry.
  • Important to practice: Chemical equilibrium, Hydrogen & its compounds, Thermodynamics, Ionic equilibrium, Isomerism, Chemical Kinetics, Solutions, Qualitative salt analysis, Alkyl Halides and Aryl Halides, Carboxylic Acids and their derivatives, Amines, Polymers, Biomolecules, Surface Chemistry, s- Block elements and Metallurgy.


  • Magnetics: Probably the most important chapter as maximum questions are asked from this topic.
  • Optics: This topic is highly scoring and relatively easy to prepare.
  • Modern Physics: You don’t want to miss this topic as it is not only scoring but also one of the most important chapters. Check for topics like Radioactivity, X-Ray, Mater’s dual nature, Nuclear Fusion and Fission etc.
  • Electromagnetic induction: Expect a lot of numerical problems, from this topic
  • Waves & Oscillation: Another important chapter for which detailed study is required.
  • Electrostatics: Every year at least 4 questions are asked from this topic in JEE Main. Electrostatics is not a difficult topic to master either.
  • Current Electricity: Colour code for Resistors, Ohm’s Law are some important
  • Other Important chapters: Kinematics, Vectors, Heat Transfer, Rotational Dynamics, Thermodynamics.
  • Important to practice: Rotational Dynamics, Fluid Mechanics, Simple Harmonic Motion, Centre of Mass, Momentum and Collison, Bernoulli’s principle, Heat & Thermodynamics, Wave Motion & String Waves, Nuclear Physics and Modern Physics (Very Important).


The distribution of questions in this section is usually such that almost all topics are covered in the question paper. So, you can expect at least one question from each chapter/topic. The only way you can master mathematics is by practice, so keep solving mock tests and previous year’s papers. These are some of the important topics where you must devote most of your time while practicing for mathematics:

  • Calculus; Definite Integral in Calculus 
  • Permutations & Combinations
  • Definite Integration
  • Quadratic Equation
  • Conic Section
  • Differential Equation
  • Probability
  • Determinants
  • Application of Derivatives
  • Vector & 3D Geometry
  • Complex Numbers
  • Coordinate Geometry: Matrices in Algebra: Circle, Parabola, Hyperbola in Coordinate Geometry
  • Functions, limits, Continuity & Differentiability
  • Sequences engineers
  • Very Important to Practice: Co-ordinate geometry, Quadratic equations, Sequence & series, Sets (Functions & Relations), Trigonometry, Logarithms, P&C, Continuity Differentiability, Solution of Triangle, Integral Calculus, Circles, Complex Numbers and Binomial Theorem etc.


Now is not the time to start a new chapter or topic. The strategy you should follow is to revise the topics that have more weightage (important chapters) first and then continue to other chapters.

Focus on revising important chapters along with practicing mock tests for JEE Main. Make sure that you attempt full tests (3-hour test) on a daily basis in the last month of your preparation.

Practice over and over again, until it becomes a part of you. Don’t worry you’ve got this! Best of luck.


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