Most NEET aspirants make the same mistake: they treat every chapter equally and try to cover everything at the same pace. That is a losing strategy for a 720-mark exam with about 80 chapters across three subjects.

Understanding the NEET 2027 syllabus chapter weightage is the most useful thing you can do before building your study plan. When you know which chapters give the most questions year after year, you stop spending time on low-yield topics and put it where the marks are.

This NEET 2027 syllabus chapter weightage guide gives the full chapter list for Physics, Chemistry and Biology as per the current NMC syllabus, the average number of questions each chapter has produced in recent papers, a priority tag, and a free PYQ practice link for every chapter.

In short:

• Syllabus status: the official NEET 2027 syllabus has not been released yet. Prepare from the current NMC syllabus, which was left unchanged for NEET 2026.
• Pattern: 180 questions, 720 marks. Biology is 360 marks; Physics and Chemistry are 180 each.
• Highest-weightage chapters: Molecular Basis of Inheritance, Principles of Inheritance, Sexual Reproduction in Flowering Plants, Current Electricity and Equilibrium.
• Rule of thumb: about 30 chapters produce close to 60% of the paper.

Want to see the weightage for yourself? Solve chapter-wise NEET previous year questions from the heaviest chapter first, free, and notice how often the same ideas return.

NEET 2027 Syllabus: What Is Official Right Now

The NEET syllabus is set by the National Medical Commission (NMC), and NTA conducts the exam on that basis. The NMC syllabus for NEET 2026 was released in December 2025 with no changes from the previous year.

No separate notification for 2027 has been issued so far. Until one is, the current NMC syllabus is the only reliable reference, and every table below follows it. We track the possibilities in our note on NEET 2027 syllabus changes, and you can check the list of deleted topics so you do not study what has been removed.

If you want the syllabus topic by topic, without weightage, use our chapter-wise syllabus breakdown.

NEET 2027 Exam Pattern: Marks Distribution

Subject	Questions	Maximum marks	Share of paper
Physics	45	180	25%
Chemistry	45	180	25%
Biology (Botany + Zoology)	90	360	50%
Total	180	720	100%

Each correct answer carries 4 marks, and each wrong answer costs 1 mark. All 180 questions are compulsory, and the duration is 3 hours.

How to Read the Chapter Wise Weightage Tables

• Average questions is the typical number asked from that chapter in recent NEET papers. It is a trend from PYQ analysis, not an official figure, and it shifts by a question or so each year.
• Priority combines the question count with how predictable the chapter is.
• Every chapter name is a link to its previous year questions, so you can check the trend yourself and practise in the same sitting.

For subject-level planning, see our guides to the important NEET Biology chapters, the important NEET Chemistry topics and the important NEET Physics chapters.

NEET 2027 Biology Chapter Weightage

Biology is the most scoring and most predictable subject. Questions are overwhelmingly NCERT-based, so the textbook is non-negotiable; our comparison of NCERT and reference books explains how to use it. The NMC syllabus has 10 Biology units, which map to 32 NCERT chapters.

Class 11 Biology

Chapter (click to practise PYQs)	Average questions	Priority
The Living World	1	🟡 Medium
Biological Classification	2–3	🟠 High
Plant Kingdom	2–3	🟠 High
Animal Kingdom	3–4	🔴 Very High
Morphology of Flowering Plants	2–3	🟠 High
Anatomy of Flowering Plants	2	🟠 High
Structural Organisation in Animals	1–2	🟡 Medium
Cell: The Unit of Life	3	🔴 Very High
Biomolecules	3–4	🔴 Very High
Cell Cycle and Cell Division	2–3	🟠 High
Photosynthesis in Higher Plants	2–3	🟠 High
Respiration in Plants	2	🟠 High
Plant Growth and Development	2	🟠 High
Breathing and Exchange of Gases	2	🟠 High
Body Fluids and Circulation	2–3	🟠 High
Excretory Products and their Elimination	2	🟠 High
Locomotion and Movement	2	🟠 High
Neural Control and Coordination	2	🟠 High
Chemical Coordination and Integration	3	🔴 Very High

Class 12 Biology

Chapter (click to practise PYQs)	Average questions	Priority
Sexual Reproduction in Flowering Plants	4	🔴 Very High
Human Reproduction	3–4	🔴 Very High
Reproductive Health	2–3	🟠 High
Principles of Inheritance and Variation	4–5	🔴 Very High
Molecular Basis of Inheritance	5–7	🔴 Very High
Evolution	2–3	🟠 High
Human Health and Disease	3	🔴 Very High
Microbes in Human Welfare	2	🟠 High
Biotechnology: Principles and Processes	3	🔴 Very High
Biotechnology and its Applications	2–3	🟠 High
Organisms and Populations	3	🔴 Very High
Ecosystem	2	🟠 High
Biodiversity and Conservation	2–3	🟠 High

Biology Weightage by Unit

Unit	Approximate questions	Share of Biology
Genetics and Evolution	12–15	About 15%
Human Physiology	13–15	About 15%
Reproduction	9–11	About 11%
Cell Structure and Function	8–10	About 10%
Diversity in Living World	8–10	About 10%
Ecology	7–8	About 8%
Plant Physiology	6–7	About 7%
Biotechnology	5–6	About 6%
Structural Organisation	5–7	About 7%
Biology and Human Welfare	5	About 6%

Biology in one line: Genetics, Human Physiology and Reproduction together give close to 40 of the 90 questions. Finish these three units first.

NEET 2027 Chemistry Chapter Weightage

The chapter wise weightage in Chemistry is flatter than in Biology. There are 45 questions, spread fairly evenly across Physical, Inorganic and Organic Chemistry. The current syllabus has 20 units. One of them, Principles Related to Practical Chemistry, has no separate NCERT chapter and usually gives 1–2 questions.

Physical Chemistry

Chapter (click to practise PYQs)	Average questions	Priority
Some Basic Concepts of Chemistry	1–2	🟠 High
Structure of Atom	1–2	🟠 High
Thermodynamics	2	🔴 Very High
Equilibrium	2–3	🔴 Very High
Redox Reactions	1	🟡 Medium
Solutions	2	🔴 Very High
Electrochemistry	2	🔴 Very High
Chemical Kinetics	2	🟠 High

Inorganic Chemistry

Chapter (click to practise PYQs)	Average questions	Priority
Classification of Elements and Periodicity	1–2	🟠 High
Chemical Bonding and Molecular Structure	2–3	🔴 Very High
The p-Block Elements	2–3	🔴 Very High
The d- and f-Block Elements	2–3	🔴 Very High
Coordination Compounds	2–3	🔴 Very High

Organic Chemistry

Chapter (click to practise PYQs)	Average questions	Priority
Organic Chemistry: Basic Principles and Techniques (GOC)	2–3	🔴 Very High
Hydrocarbons	2–3	🔴 Very High
Haloalkanes and Haloarenes	1–2	🟠 High
Alcohols, Phenols and Ethers	2	🟠 High
Aldehydes, Ketones and Carboxylic Acids	2–3	🔴 Very High
Amines	1–2	🟠 High
Biomolecules	1–2	🟠 High

Chemistry in one line: Physical Chemistry needs calculation practice, Organic needs mechanism-based reasoning, and Inorganic is NCERT line by line. Treat each branch differently.

NEET 2027 Physics Chapter Weightage

Physics decides rank more than any other subject, because scores vary the most here. Its chapter wise weightage leans slightly towards Class 12. The current syllabus has 20 units. One of them, Experimental Skills, usually gives 1–2 questions.

Class 11 Physics

Chapter (click to practise PYQs)	Average questions	Priority
Units and Measurements	1	🟡 Medium
Motion in a Straight Line	1	🟡 Medium
Motion in a Plane	1–2	🟠 High
Laws of Motion	2	🔴 Very High
Work, Energy and Power	1–2	🟠 High
System of Particles and Rotational Motion	2–3	🔴 Very High
Gravitation	1–2	🟠 High
Mechanical Properties of Solids	1	🟡 Medium
Mechanical Properties of Fluids	1–2	🟠 High
Thermal Properties of Matter	1	🟡 Medium
Thermodynamics	2	🔴 Very High
Kinetic Theory	1	🟡 Medium
Oscillations	1–2	🟠 High
Waves	1	🟡 Medium

Class 12 Physics

Chapter (click to practise PYQs)	Average questions	Priority
Electric Charges and Fields	1–2	🟠 High
Electrostatic Potential and Capacitance	2	🔴 Very High
Current Electricity	3–4	🔴 Very High
Moving Charges and Magnetism	2–3	🔴 Very High
Magnetism and Matter	1	🟡 Medium
Electromagnetic Induction	1–2	🟠 High
Alternating Current	1–2	🟠 High
Electromagnetic Waves	1	🟡 Medium
Ray Optics and Optical Instruments	2–3	🔴 Very High
Wave Optics	1–2	🟠 High
Dual Nature of Radiation and Matter	1–2	🟠 High
Atoms	1	🟡 Medium
Nuclei	1–2	🟠 High
Semiconductor Electronics	2–3	🔴 Very High

Physics in one line: Class 12 gives slightly more than half the paper. Current Electricity, Ray Optics, Semiconductors and Moving Charges alone can account for 9–12 questions.

Top 15 High-Weightage Chapters for NEET 2027

If you want a single list of the NEET 2027 important chapters, this is it. Together these 15 give roughly 45–55 questions.

Rank	Chapter	Subject	Average questions
1	Molecular Basis of Inheritance	Biology	5–7
2	Principles of Inheritance and Variation	Biology	4–5
3	Sexual Reproduction in Flowering Plants	Biology	4
4	Human Reproduction	Biology	3–4
5	Animal Kingdom	Biology	3–4
6	Biomolecules	Biology	3–4
7	Current Electricity	Physics	3–4
8	Cell: The Unit of Life	Biology	3
9	Human Health and Disease	Biology	3
10	Biotechnology: Principles and Processes	Biology	3
11	Organisms and Populations	Biology	3
12	Equilibrium	Chemistry	2–3
13	Coordination Compounds	Chemistry	2–3
14	Ray Optics and Optical Instruments	Physics	2–3
15	System of Particles and Rotational Motion	Physics	2–3

Class 11 vs Class 12 Weightage

Subject	Class 11 share	Class 12 share
Physics	About 45%	About 55%
Chemistry	About 45%	About 55%
Biology	About 50%	About 50%

The split is close to even, so neither year can be skipped. Droppers often over-revise Class 12 and lose easy Class 11 marks in Biology.

Chapters Not in the Current Syllabus

Do not spend time on these unless a new notification brings them back:

• Biology: Transport in Plants, Mineral Nutrition, Digestion and Absorption, Reproduction in Organisms, Strategies for Enhancement in Food Production, Environmental Issues
• Chemistry: States of Matter, Hydrogen, s-Block Elements, Environmental Chemistry, Solid State, Surface Chemistry, Metallurgy, Polymers, Chemistry in Everyday Life
• Physics: no full chapters removed, but topics such as heat engines, the Carnot cycle and Earth’s magnetism are out

How to Use the NEET 2027 Syllabus Chapter Weightage

Knowing the weightage is step one. Using it well is what separates planned preparation from random preparation.

Step 1: Sort Your Chapters Into Three Buckets

• Must-master (🔴 Very High): cover these first, revise them most often, and never leave them incomplete.
• Should-cover (🟠 High): cover after the must-masters and revise at least twice.
• Cover once (🟡 Medium): study once and revise briefly. They are still in the exam, so do not skip them.

Step 2: Give High-Weightage Chapters 60–70% of Your Time

This is not about ignoring small chapters. It is about not giving equal time to a chapter worth one question and a chapter worth six.

Step 3: Use PYQs as Your Weightage Compass

Previous year questions are the most accurate guide to the high-weightage chapters. Solving them chapter-wise shows you what is asked and how it is asked. All chapters are sorted by subject here:

👉 Practise NEET PYQs chapter-wise

Step 4: Revise by Weightage

A chapter such as Molecular Basis of Inheritance or Current Electricity needs three to four revision rounds. A chapter such as Kinetic Theory can be reviewed once closer to the exam.

Quick Summary Table

Subject	Marks	Top 3 chapters by weightage
Biology	360	Molecular Basis of Inheritance, Principles of Inheritance, Sexual Reproduction in Flowering Plants
Chemistry	180	Equilibrium, Coordination Compounds, Chemical Bonding
Physics	180	Current Electricity, Ray Optics, Rotational Motion

The Bottom Line

The NEET 2027 syllabus chapter weightage data is clear: a small set of chapters carries a large share of the paper. Students who identify the NEET 2027 important chapters early, and build their plan around them, have a structural advantage over those who study everything equally.

Use the tables to decide the order, the PYQ links to test each chapter, and the official NMC syllabus as the final word once the 2027 notification is out.

FAQ

Q: What is the chapter wise weightage for Biology in NEET 2027?
A: Biology has 90 questions worth 360 marks. Molecular Basis of Inheritance (5–7 questions), Principles of Inheritance (4–5), Sexual Reproduction in Flowering Plants (4) and Human Reproduction (3–4) are the heaviest chapters.

Q: Which Physics chapters have the highest weightage in NEET 2027?
A: Based on PYQ trends, Current Electricity, Ray Optics, Semiconductor Electronics, Moving Charges and Magnetism, Rotational Motion and Laws of Motion give the most questions.

Q: Which Chemistry chapters are most important for NEET 2027?
A: Equilibrium, Chemical Bonding, Coordination Compounds, p-Block, d- and f-Block, GOC, Hydrocarbons and Aldehydes, Ketones and Carboxylic Acids are the most frequently tested.

Q: Has the NEET 2027 syllabus been released?
A: Not yet. Until an official notification is published, prepare from the current NMC syllabus, which was unchanged for NEET 2026.

Q: Is the NEET 2027 syllabus chapter weightage final?
A: No. The NEET 2027 syllabus chapter weightage shown here is a trend from past papers, not an official figure. It varies by a question or so per chapter each year, but the list of heavy chapters stays largely the same. Use weightage to set priorities, not to skip chapters.

Q: How many chapters are there in the NEET 2027 syllabus?
A: Going by the current syllabus, there are about 80 NCERT chapters: 28 in Physics, 20 in Chemistry and 32 in Biology, plus one practical-skills unit each in Physics and Chemistry.