The JEE Mains 2027 exam for January Session is very close, hardly two months left from today, and almost all candidates have finished their syllabus. There are approximately 65 to 70 chapters across Physics, Chemistry, and Mathematics in JEE Main syllabus. Now this is the right time to know what to study, what to skip and how to revise these topics in this short time. To study smartly, the first thing students need to understand is which chapters are more important and carry high weightage.
For that we have prepared a list of important chapters subject wise from all three subjects: Mathematics, Physics and Chemistry. These chapters are picked up based on highly weightage and questions repeatedly asked from these chapters for the last five years. So, don’t skip a single word and read this post till the end.
Important Chapters for JEE Mains 2027 Maths
Aspirants preparing for the JEE Main Mathematics syllabus should not skip the most important chapters, including 3D Geometry, Progressions, Definite Integration, Differential Equations, Vector Algebra, and the Binomial Theorem, as these topics carry the highest weightage. Candidates can check the weightage-wise chapters of Mathematics in the table below:
Chapter-Wise Weightage of Maths in JEE Main
| Chapter | Weightage (%) | Approx. Marks |
| 3D Geometry | 7.4 | 7 marks |
| Progressions | 6.1 | 6 marks |
| Definite Integration | 6.0 | 6 marks |
| Other Miscellaneous Topics | 5.2 | 5 marks |
| Differential Equations | 5.1 | 5 marks |
| Vector Algebra | 4.9 | 5 marks |
| Binomial Theorem | 4.6 | 5 marks |
| Probability | 4.4 | 4 marks |
| Complex Numbers | 3.8 | 4 marks |
| Determinants | 3.7 | 4 marks |
| Permutations and Combinations | 3.5 | 4 marks |
| Area Under Curves | 3.4 | 3 marks |
| Matrices | 3.3 | 3 marks |
JEE Mains 2027 High Weightage Chapters for Physics
There are around 20 to 22 chapters in the JEE Main Physics syllabus. Out of these chapters, students must practise the highly weighted topics like Heat-2, Modern Physics-I, Current Electricity, Magnetism, Rotational Motion, Geometrical Optics, Kinematics, and Electronics first; after that, proceed with the rest of the chapters.
| Chapter | Weightage (%) | Approx. Marks |
| Heat-2 | 7.1 | 7 marks |
| Modern Physics-I | 6.3 | 6 marks |
| Current Electricity | 6.1 | 6 marks |
| Magnetism | 5.9 | 6 marks |
| Geometrical Optics | 5.4 | 5 marks |
| Rotational Motion | 4.7 | 5 marks |
| Kinematics | 4.3 | 4 marks |
| Electronics | 4.2 | 4 marks |
| Gravitation | 3.6 | 4 marks |
| Electrostatics-1 | 3.6 | 4 marks |
| Capacitance | 3.1 | 3 marks |
| Alternating Current | 3.1 | 3 marks |
| Units, Dimensions and Basic Mathematics | 3.0 | 3 marks |
| Wave Optics | 3.0 | 3 marks |
| Work, Power and Energy | 3.0 | 3 marks |
| Electromagnetic Waves | 2.9 | 3 marks |
| Electromagnetic Induction | 2.9 | 3 marks |
Most Important Chapters for JEE Main Chemistry 2027
In chemistry, students should not skip the most important chapters as available in the table below. Interested candidates are suggested to first prefer the NCERT book rather than selecting the other references.
| Chapter | Weightage (%) | Approx Marks |
| Coordination Chemistry | 6.8 | 7 marks |
| Chemical Bonding | 4.9 | 5 marks |
| Stoichiometry (I) | 4.4 | 4 marks |
| P-Block | 4.3 | 4 marks |
| Periodic Properties | 4.2 | 4 marks |
| Electrochemistry | 4.1 | 4 marks |
| Biomolecules | 4.0 | 4 marks |
| Chemical Kinetics | 3.8 | 4 marks |
| Atomic Structure | 3.7 | 4 marks |
| Carbonyl Compounds | 3.7 | 4 marks |
| Solutions and Colligative Properties | 3.7 | 4 marks |
| Aromatic Compounds | 3.5 | 4 marks |
Subject -Wise Weightage for JEE Main 2027 Physics, Chemistry & Maths
Basically, to score good marks, students need to cover up the whole JEE Mains syllabus. Candidates who are looking for the main chapters to revise for the last time should revise the following key chapters:-
Physics
- Heat-2
- Modern Physics-I
- Current Electricity
- Magnetism
- Geometrical Optics from Physics
- Rotational Motion
- Kinematics
- Electronics
- Gravitation
- Electrostatics-1
- Capacitance
- Alternating Current
- Dimensions and Basic Mathematics
Mathematics
- Practise all the examples from NCERT
- 3D Geometry, Progressions
- Definite Integration
- Differential Equations
- Binomial Theore
- Vector Algebra
- Binomial Theorem
- Probability
- Complex Numbers
- Determinants
Chemistry
- Coordination Chemistry
- Chemical Bonding
- Electrochemistry
- Stoichiometry (I)
- P-Block
- Periodic Properties
- Electrochemistry
- Biomolecules
Apart from the above important chapters, candidates are advised to revise NCERT, Coaching modules, and the notes again and again. Practise mock tests and analyse them. Improve the mistakes and work on the weak areas.
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JEE Mains 2027 Important Topics from Mathematics, Physics & Chemistry
JEE aspirants looking for the key topics from the mathematics portion should go through the topics that carry higher weightage. The important topics are: Integral Calculus, Limits, Continuity, and Differentiability, Coordinate Geometry, Vector Algebra, Complex Numbers and Quadratic Equations, Statistics and Probability, Matrices and Determinants, Three-Dimensional Geometry, Mathematical Reasoning, Binomial Theorem and Its Application, and Statics and Dynamics.
In Physics, the important topics are Modern Physics, Optics, Heat and Thermodynamics, Electrostatics, Current Electricity and Magnetism. When it comes to Chemistry, then one must go through the important topics: Transition Elements and Coordination Chemistry, The Periodic Table and Representative Elements, Atomic Structure, Chemical Bonding, Nuclear Chemistry And Environment, Solid-State And Surface Chemistry, Chemical And Ionic Equilibrium and Thermodynamics And Gaseous State.
Download JEE Mains High-Weightage Chapters PDF
To download the JEE Mains subject-wise high-weightage chapters list PDF can obtain the document from the link available here. Source: Motion Academy, JEE Main Chapter-Wise Weightage 2020-2026 (Watch and download the PDF).
How to Prepare High-Weightage Chapters for JEE Main 2027?
To prepare the most important topics and chapters for JEE Main, candidates must remember the following tips:-
- Start with the topics and chapters that are tough and lengthy.
- Make Short notes of the topics and revise them regularly.
- Attempt mock tests for these topics individually.
- Revise the maximum number of questions and examples from NCERT and other references.
- Solve previous years’ question papers.
Are Important Topics Alone Enough to Crack JEE Main 2027?
The important topics and chapters in JEE Mains can boost your score, but studying only the important chapters and topics is not enough to score good marks. So, if your target is to obtain good ranks, then you should revise the chapters with low weightage along with the important topics and chapters.
Note: Students who are only dependent on these important topics of chapters are informed that these High-Weightage Chapters are based on previous years’ question papers, and this can change from year to year. So, revise the whole JEE Mains syllabus.
Conclusion
Aspirants preparing for the upcoming JEE Main exam should know which chapters and topics are asked again and again. In this post, you can check the subject-wise important chapters and use them to boost your score. Go through each list carefully and plan your revision. Keep your preparation exam-oriented, but also revise the remaining topics, as many of those chapters are easy to learn and easy to score.
FAQs
There is no guarantee that you can score good ranks or 200+ marks by studying only the important chapters. Because the weitage of questions in the exam changes year to year.
It’s better not to skip them. They carry fewer marks, but many are short and easy to revise, so a quick study can still add easy marks to your score.
To get 99 percentile in JEE Mains exam, individuals need to cover the whole syllabus, practise mock test, revise NCERT and solve the PYQs.
