Courses
By rohit.pandey1
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Updated on 12 May 2026, 15:46 IST
The JEE Main 2027 Class 12 syllabus is the NTA-prescribed set of topics from NCERT Class 12 Physics, Chemistry, and Mathematics that form part of Paper 1 (B.E./B.Tech). Class 12 topics contribute approximately 50–55% of the total questions in JEE Main, making it the slightly heavier half of your two-year preparation.
What makes Class 12 preparation uniquely challenging is the dual pressure — CBSE board exams in February–March 2027 run parallel to JEE Main Session 1 in January 2027. Students must manage both simultaneously, which makes understanding the exact Class 12 JEE syllabus — and how it overlaps with boards — absolutely critical.
NTA has confirmed no new changes to the JEE Main 2027 syllabus compared to 2025. The revisions made in 2024, based on NCERT rationalisation, continue to apply. Students following the current NTA-revised syllabus are fully prepared for 2027.
The JEE Main 2027 Class 12 syllabus covers 12 chapters in Physics, 13–14 chapters in Chemistry, and 9–10 units in Mathematics from NCERT Class 12. No new deletions have been confirmed for 2027. The 2024 reductions — Communication Systems (Physics), Polymers, Environmental Chemistry, Linear Programming (Maths) — remain deleted. The official 2027 PDF is expected on jeemain.nta.nic.in around October 2026.
| Parameter | Details |
| Conducting Body | National Testing Agency (NTA) |
| Official Website | jeemain.nta.nic.in |
| 2027 Syllabus Status | No new changes — 2024 revised syllabus continues |
| Official Brochure Expected | October 2026 |
| Class 12 Contribution | ~50–55% of Paper 1 questions |
| Subjects | Physics, Chemistry, Mathematics |
| Syllabus Basis | NCERT Class 12 textbooks |
| New Deletions for 2027 | None confirmed as of May 2026 |
| Sessions | January 2027 & April 2027 |
| Total Questions (Paper 1) | 75 (20 MCQ + 5 Numerical per subject) |
| Total Marks | 300 (100 per subject) |
| Marking Scheme | +4 correct, −1 wrong MCQ; no negative for numerical |
| Exam Mode | Computer Based Test (CBT) |
Physics in JEE Main 2027 is split between Class 11 (mechanics-heavy) and Class 12 (electrodynamics-heavy). Historically, Class 12 Physics topics carry slightly higher overall weightage. Electrostatics, Current Electricity, and Optics together contribute nearly 30–35% of the entire Physics section.
| Chapter | Key Topics | Avg. Questions | Weightage |
| Ray Optics & Optical Instruments | Refraction, reflection, lenses, mirrors, microscopes, telescopes, optical fibres | 3–4 | 10–13% |
| Electrostatics | Coulomb's law, electric field, Gauss's law, potential, capacitors, dielectrics | 2–3 | 8–10% |
| Current Electricity | Ohm's law, Kirchhoff's laws, Wheatstone bridge, potentiometer, meters | 2–3 | 8–10% |
| Magnetic Effects of Current & Magnetism | Biot-Savart, Ampere's law, force on current, moving coil galvanometer | 2–3 | 7–9% |
| Electromagnetic Induction (EMI) | Faraday's law, Lenz's law, self and mutual inductance | 2 | 5–7% |
| Alternating Current (AC) | RLC circuits, resonance, power factor, transformers | 2 | 5–7% |
| Atoms & Nuclei | Bohr model, nuclear reactions, radioactivity, binding energy, fission/fusion | 2 | 5–7% |
| Dual Nature of Matter & Radiation | Photoelectric effect, de Broglie wavelength, Davisson-Germer | 1–2 | 4–6% |
| Wave Optics | Huygen's principle, Young's double slit, diffraction, polarisation | 1–2 | 4–6% |
| Semiconductor Electronics | p-n junction, Zener diode, transistors, logic gates | 1–2 | 3–5% |
| Electromagnetic Waves | Maxwell's equations, EM spectrum, properties | 1 | 2–3% |
Note: Ray Optics is the single highest-weightage Class 12 Physics chapter in JEE Main, consistently contributing 10–13% of the Physics section. Never treat it as a board-only chapter.
Class 12 Chemistry is the most scoring section of JEE Main for prepared students. Chemistry is generally considered the most scoring subject due to direct NCERT-based questions. Inorganic and Organic Chemistry from Class 12 are particularly high-return if NCERT is studied thoroughly.
| Chapter | Key Topics | Avg. Questions | Weightage |
| Electrochemistry | Nernst equation, EMF, Faraday's laws, conductance, corrosion | 2–3 | 6–8% |
| Chemical Kinetics | Rate laws, order of reaction, Arrhenius equation, mechanisms, half-life | 2–3 | 6–8% |
| Solutions | Colligative properties, Raoult's law, abnormal molar mass, van't Hoff factor | 1–2 | 4–6% |
| Solid State | Crystal systems, unit cells, packing efficiency, defects, semiconductors | 1–2 | 3–5% |
| Chapter | Key Topics | Avg. Questions | Weightage |
| Coordination Compounds | Werner's theory, IUPAC nomenclature, VBT, CFT, isomerism, EAN rule | 2–3 | 7–9% |
| d & f-Block Elements | Transition metal properties, variable oxidation states, colour, lanthanoids, actinoids | 2 | 4–6% |
| p-Block Elements (Class 12) | Groups 15–18: N/P/O/S/Cl families, key oxoacids, interhalogen compounds | 2 | 4–6% |
| General Principles of Metallurgy | Extraction, refining, basic principles only | 1 | 2–3% |
| Chapter | Key Topics | Avg. Questions | Weightage |
| Aldehydes, Ketones & Carboxylic Acids | Nucleophilic addition, aldol condensation, Cannizzaro, Clemmensen reduction | 2–3 | 6–8% |
| Amines | Basicity, preparation methods, diazotization, coupling reactions | 1–2 | 4–6% |
| Haloalkanes & Haloarenes | SN1, SN2, elimination reactions, reactivity comparison | 1–2 | 4–5% |
| Alcohols, Phenols & Ethers | Acidic character of phenols, Lucas test, Williamson synthesis | 1–2 | 3–5% |
| Biomolecules | Carbohydrates (reducing/non-reducing), proteins (amino acids), nucleic acids, vitamins | 1–2 | 3–4% |
Mathematics from Class 12 forms the core of JEE Main's highest-scoring opportunities. Calculus alone contributes approximately 35% of the Mathematics section — and the bulk of Calculus (Integration, Applications of Derivatives, Differential Equations) comes from Class 12. Combined with Vectors, 3D Geometry, and Probability — all Class 12 chapters — the second year contributes a dominant share of Maths marks.
| Unit | Key Topics | Avg. Questions | Weightage |
| Integral Calculus (Indefinite + Definite) | Integration by parts, by substitution, partial fractions, definite integrals, area under curves | 3–4 | 10–12% |
| Applications of Derivatives | Tangents and normals, maxima-minima (local + global), increasing/decreasing functions, Rolle's and MVT | 2–3 | 7–9% |
| Continuity & Differentiability | Chain rule, implicit differentiation, logarithmic differentiation, higher-order derivatives | 2 | 5–7% |
| Vectors | Dot product, cross product, scalar triple product, angle between vectors, coplanarity | 2–3 | 6–8% |
| 3D Geometry | Direction cosines, equation of lines and planes in 3D, angle between them, skew lines, distance | 2–3 | 6–8% |
| Probability | Conditional probability, Bayes' theorem, Bernoulli trials, binomial distribution | 2–3 | 5–7% |
| Matrices & Determinants | Operations, inverse, adjoint, Cramer's rule, system of linear equations | 2 | 5–6% |
| Relations & Functions | Composition, inverse, types of functions, binary operations | 1–2 | 3–5% |
| Differential Equations | Variable separable, homogeneous, linear first-order DE, formation | 1–2 | 3–5% |
NTA has confirmed no new changes to the JEE Main 2027 syllabus. The revisions made in 2024, based on NCERT rationalisation, continue to apply for 2027.
| Subject | Chapter / Topic | Class | Status |
| Physics | Communication Systems / Communication Devices | 12 | Fully Deleted (2024) |
| Chemistry | Polymers | 12 | Fully Deleted (2024) |
| Chemistry | Chemistry in Everyday Life | 12 | Fully Deleted (2024) |
| Chemistry | Environmental Chemistry | 11 | Fully Deleted (2024) |
| Mathematics | Linear Programming | 12 | Fully Deleted (2024) |
| Mathematics | Mathematical Reasoning | 11 | Fully Deleted (2024) |
| Chemistry | s-Block Elements (certain sub-topics) | 11 | Reduced (2024) |
For Class 12 students specifically: Communication Systems, Polymers, Chemistry in Everyday Life, and Linear Programming are the four major Class 12 deletions. These may still appear in your CBSE board exam — prepare them for boards if required, but allocate zero JEE Main preparation time to them.
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
This is the most important planning tool for Class 12 students. Understanding where boards and JEE overlap — and where JEE demands more depth — saves dozens of hours of redundant study.
| Chapter | In CBSE Board? | In JEE Main 2027? | Extra JEE Depth Required? |
| Electrostatics | Yes | Yes | High — deeper numericals, Gauss's law applications |
| Current Electricity | Yes | Yes | High — complex circuit problems beyond NCERT |
| Ray Optics | Yes | Yes | Very High — most tested chapter; NCERT not sufficient |
| Wave Optics | Yes | Yes | Medium — YDSE numerical and diffraction grating |
| Electromagnetic Induction | Yes | Yes | High — induced EMF numerical, LR circuit transients |
| Alternating Current | Yes | Yes | High — complex impedance, resonance condition derivation |
| Atoms & Nuclei | Yes | Yes | Medium — binding energy graph, Q-value problems |
| Communication Systems | Yes (CBSE) | No (Deleted) | Prepare for boards only; skip for JEE |
| Coordination Compounds | Yes | Yes | Medium — NCERT is ~80% sufficient |
| Electrochemistry | Yes | Yes | High — Nernst equation numericals beyond NCERT |
| Polymers | Yes (CBSE) | No (Deleted) | Prepare for boards only; skip for JEE |
| Chemistry in Everyday Life | Yes (CBSE) | No (Deleted) | Prepare for boards only; skip for JEE |
| Integration (Calculus) | Yes | Yes | Very High — JEE has far deeper integration problems |
| 3D Geometry | Yes | Yes | High — JEE tests line-plane intersection deeply |
| Linear Programming | Yes (CBSE) | No (Deleted) | Prepare for boards only; skip for JEE |
| Probability | Yes | Yes | High — Bayes' theorem + binomial distribution problems |
| Subject | Top 3 Class 12 Chapters | Combined Weightage (est.) |
| Physics | Ray Optics, Electrostatics, Current Electricity | 26–33% of Physics section |
| Chemistry | Coordination Compounds, Electrochemistry, Aldehydes & Ketones | 19–25% of Chemistry section |
| Mathematics | Integration, Applications of Derivatives + Continuity, Vectors + 3D Geometry | 28–35% of Maths section |
Visit jeemain.nta.nic.in → open the 2027 Information Brochure (expected October 2026) → navigate to the Syllabus section → the PDF lists Class 11 and Class 12 topics combined, subject-wise.
Until the 2027 notification is released, use the NTA 2024 revised syllabus PDF currently available on jeemain.nta.nic.in. Avoid third-party PDFs that may contain outdated or inaccurate information.
Very High Priority — Do these first:
High Priority — Do these second:
Medium / Low Priority — After completing above:
Physics — Class 12
Chemistry — Class 12
Mathematics — Class 12
The biggest challenge for Class 12 JEE aspirants is balancing board exam preparation (February–March 2027) with JEE Main Session 1 (January 2027). Here is the right approach:
| Month | Focus Area |
| April–May 2026 | Foundation + Class 11 revision; begin Class 12 Electrostatics and Electrochemistry |
| June–July 2026 | Ray Optics, Coordination Compounds, Integration (Indefinite), Vectors |
| August–September 2026 | Current Electricity, Chemical Kinetics, Applications of Derivatives, 3D Geometry |
| October–November 2026 | EMI, AC, Aldehydes & Ketones, Amines, Probability, Matrices & Determinants |
| December 2026 | Full Class 12 revision + PYQ chapter-wise + first full-length mocks |
| January 2027 | JEE Main Session 1 + board exam parallel preparation begins |
| February–March 2027 | CBSE Board exams + JEE Session 2 prep continuation |
| April 2027 | JEE Main Session 2 + complete integrated Class 11+12 mock tests |
No courses found
No. NTA has confirmed no new changes to the JEE Main 2027 syllabus. The 2024 revision-based deletions continue to apply. Students following the current NTA-revised syllabus are fully aligned for 2027.
Four major Class 12 chapters are deleted from JEE Main 2027: Communication Systems (Physics), Polymers (Chemistry), Chemistry in Everyday Life (Chemistry), and Linear Programming (Mathematics). These deletions are from the 2024 NTA revision and continue unchanged for 2027. All four may still be present in CBSE board exams.
Ray Optics & Optical Instruments (Physics) is the highest-weightage individual Class 12 chapter in JEE Main, consistently contributing 10–13% of the Physics section per paper. In Maths, Integration is the single highest-weightage chapter across Class 11 and 12 combined.
Ray Optics & Optical Instruments is a Class 12 chapter (NCERT Class 12 Physics, Chapter 9). It is also the highest-weightage chapter from the entire Class 12 Physics syllabus in JEE Main.
Class 12 Chemistry for JEE Main 2027 covers approximately 12–13 chapters: Solutions, Electrochemistry, Chemical Kinetics, Solid State, Coordination Compounds, d & f-Block Elements, p-Block Elements (Class 12), Metallurgy, Haloalkanes & Haloarenes, Alcohols Phenols & Ethers, Aldehydes Ketones & Carboxylic Acids, Amines, and Biomolecules. Polymers and Chemistry in Everyday Life are deleted.
NCERT Class 12 is the foundation for JEE Main, but board-level depth is not sufficient for most chapters. Subjects like Ray Optics, Electrostatics, Current Electricity, Electrochemistry, Integration, and 3D Geometry require significantly deeper practice beyond NCERT for JEE Main. The exception is Inorganic Chemistry (Coordination Compounds, d-f Block) where NCERT covers 75–80% of what JEE asks.
Approximately 50–55% of JEE Main Paper 1 questions come from Class 12 topics across Physics, Chemistry, and Mathematics. Both Class 11 and Class 12 are equally important overall, but Class 12 Physics and Maths carry slightly higher individual weightage in their respective sections.
Communication Systems / Communication Devices was removed in 2024 and is not part of the JEE Main 2027 syllabus. It may appear in your CBSE board exam — prepare it for boards only.
Linear Programming was removed from the JEE Main Mathematics syllabus in the 2024 NTA revision and continues to be absent for 2027. Prepare it for CBSE boards if required, but allocate no JEE Main preparation time to it.
Integration (Indefinite + Definite), Applications of Derivatives, and Vectors + 3D Geometry are the three most important Class 12 Maths units for JEE Main 2027. Calculus as a whole contributes approximately 35% of the Mathematics section, and the majority of Calculus comes from Class 12.
Study every chapter to JEE depth — board questions are automatically covered. For deleted JEE topics (Communication Systems, Polymers, Linear Programming, Chemistry in Everyday Life), prepare only to board depth. From November 2026 onwards, add 2 board-specific practice days per week while continuing JEE mocks. NCERT exercises done for JEE revision simultaneously serve as board revision.
Electrochemistry is a Class 12 chapter and one of the highest-weightage Physical Chemistry chapters in JEE Main, contributing an estimated 6–8% of Chemistry section marks. Nernst equation numericals, Faraday's laws of electrolysis, and conductance calculations are the most frequently tested topics.
Physics: NCERT Class 12 (essential) + DC Pandey (Electricity & Magnetism and Optics volumes) for JEE-level numericals. Chemistry: NCERT (primary, especially for Inorganic) + N. Avasthi for Physical Chemistry + MS Chauhan for Organic. Mathematics: NCERT + Cengage or Arihant Mathematics for Class 12 chapters. PYQs from 2019–2026 are mandatory across all subjects and all chapters.
Month 1: Ray Optics, Coordination Compounds, Integration basics.
Month 2: Electrostatics, Current Electricity, Electrochemistry, Chemical Kinetics, Applications of Derivatives.
Month 3: EMI, AC, Aldehydes & Ketones, Vectors, 3D Geometry.
Month 4: Atoms & Nuclei, Dual Nature, Amines, Haloalkanes, Probability, Matrices.
Month 5: Remaining chapters + chapter-wise PYQ solving.
Month 6: Full mock tests + error analysis + formula revision.
From jeemain.nta.nic.in. The official 2027 information brochure with the complete syllabus (Class 11 and Class 12 combined) is expected in October 2026. Until then, students should use the NTA 2024 revised syllabus PDF available on the same website and avoid third-party PDFs.
Biomolecules is part of the Class 12 JEE Main 2027 Chemistry syllabus. It carries medium weightage (3–4%) and is relatively scoring since it is largely factual and NCERT-based. Key topics include reducing vs non-reducing sugars, essential amino acids, structure of DNA and RNA, and vitamins classification.
Based on PYQ analysis from 2019–2026, approximately 13–15 out of 25 Physics questions in JEE Main Paper 1 come from Class 12 chapters — with Ray Optics, Electrostatics, and Current Electricity being the biggest contributors. The remaining 10–12 questions come from Class 11 Physics.
Solid State is a Class 12 Physical Chemistry chapter with moderate weightage (3–5%). It is relatively predictable in terms of question types — unit cell calculations, packing efficiency, and defect types are tested most often. One dedicated week of preparation is sufficient for this chapter.