NEET 2027 Syllabus: Chapter-Wise Weightage in Biology, Physics, and Chemistry

NEET 2027 has 79 chapters, but not every chapter has the same number of questions. This guide shows how many marks each chapter usually carries in Biology, Physics, and Chemistry, based on NEET papers from 2021 to 2026. Sort the table, check trends, set a target score, and track your revision in one place.

NEET 2027 Exam Pattern and Marks Distribution

NEET 2027 has 180 questions worth 720 marks. Physics and Chemistry have 45 questions each, and Biology has 90. The optional Section B has been removed, so every question is compulsory.

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

Marking scheme: +4 for a correct answer, −1 for a wrong answer, 0 for an unattempted question.

	NEET 2026	NEET 2027
Optional questions	Not in the pattern	Removed (all 180 compulsory)
Exam mode	Pen and paper	Computer-based test (CBT), announced 15 May 2026
Syllabus	Official NMC syllabus	Expected to stay the same; no revision announced as of August 2026

Sources do not fully agree on CBT. Some say the Ministry has only indicated a move toward it. Confirm the mode and exam duration in the official NTA bulletin.

NEET 2027 Syllabus: 97 to 79 Chapters, What Was Removed

The NMC cut the NEET 2027 syllabus from 97 chapters to 79. This change removed repeated and low-weightage topics. The 79 chapters split roughly into 20 in Physics, 22 in Chemistry, and 37 in Biology.

What to do with this:

• Download the official NMC syllabus PDF and compare it with your coaching or school notes.

• Cross out any topic that is not in the official list. Old books and old test series may still include it.

• When you read old question papers, skip questions from removed chapters.

Expect no big change before the exam. The NMC is expected to release the updated 2027 syllabus around February 2027. On 23 December 2025, the NMC confirmed no changes to the NEET 2026 syllabus.

NEET 2027 Chapter-Wise Weightage (All 79 Chapters)

Chapter-wise weightage tells you how many questions NEET usually asks from each chapter. Use it to decide where your study hours should go first. Numbers below are approximate ranges, so always read them as “about” and not “exactly”.

Quick view of the biggest scorers (approximate, per paper):

Subject	Chapter groups that give the most questions
Biology	Human Physiology, Genetics and Evolution, Ecology, Cell Biology, Biotechnology
Physics	Mechanics (motion, laws, work-energy, rotation), Current Electricity, Modern Physics, Optics, Thermodynamics
Chemistry	Organic Chemistry, Chemical Bonding, Coordination Compounds, Electrochemistry, Equilibrium

Insight: One analysis finds that Human Physiology, Genetics and Evolution, Ecology, Cell Biology and Biotechnology together make up about 45% of Biology. That is why a few chapters deserve your first attention.

NEET 2027 Biology Chapter-Wise Weightage

Biology gives 90 questions, split evenly between Botany and Zoology. Class 11 and Class 12 both matter, and almost every question comes from NCERT.

NEET Botany Chapter-Wise Weightage

Botany has 45 questions. Class 12 topics like Genetics, Ecology, and Biotechnology usually get a bigger share.

• Usually heavy: Principles of Inheritance and Variation, Molecular Basis of Inheritance, Organisms and Populations, Ecosystem, Biodiversity and Conservation.

• Steady: Plant Physiology chapters (photosynthesis, respiration, plant growth), Morphology and Anatomy of Flowering Plants.

• Lighter: Plant Kingdom and Biological Classification often give fewer questions, but they are easy to prepare.

NEET Zoology Chapter-Wise Weightage

Zoology has 45 questions. Human Physiology is the single biggest block.

• Heavy: Breathing and Exchange of Gases, Body Fluids and Circulation, Excretory Products, Neural Control, Chemical Coordination.

• Steady: Human Reproduction, Reproductive Health, Evolution.

• Lighter: Animal Kingdom and Structural Organisation in Animals usually give a smaller share.

High-Yield Biology Chapters for NEET 2027

High-yield chapters give many questions and stay predictable. These five deserve the first slot in your plan:

1. Human Physiology: the largest set of questions in any Biology topic.

2. Genetics (Inheritance and Molecular Basis): mixes theory with small problems.

3. Ecology: short chapters with direct NCERT lines and definitions.

4. Cell Biology (Cell, Cell Cycle, Biomolecules): a base for many other chapters.

5. Biotechnology: questions on tools, processes, and applications.

NCERT Line-Based Questions in Biology

Most Biology questions come directly from NCERT text, examples, tables, and diagrams. Wrong options often change one word or number from the NCERT line, so precise reading matters.

Do this:

• Read NCERT line by line, twice.

• Underline numbers, names, and exceptions.

• Practice with NEET questions to see how lines get twisted.

Diagram, Table and Assertion-Reason Questions

NEET Biology often uses statement-based questions, matching tables, diagrams, and assertion-reason formats (one statement claims something, another gives the reason). Use these habits to prepare:

• Redraw NCERT diagrams and label them from memory.

• Make small tables for classification, hormones, diseases and organelles.

• For assertion-reason, first decide if each statement is true, then check if the reason explains the assertion.

NEET 2027 Physics Chapter-Wise Weightage

Physics has 45 questions worth 180 marks. Questions are spread across many chapters, so no single chapter dominates the way Human Physiology does in Biology.

Class 11 vs Class 12 Physics Weightage

The paper draws from both classes, and the split is roughly balanced. Class 11 brings Mechanics, Properties of Matter, Thermodynamics, and Waves. Class 12 brings Electricity and Magnetism, Optics, Modern Physics, and Semiconductors.

Do not skip Class 11. Mechanics builds the base for many Class 12 problems.

Most Scoring Physics Chapters for NEET 2027

Scoring chapters give many questions and are easier to get right. Focus on these:

• Current Electricity: a few formulas cover most questions.

• Modern Physics (Dual Nature, Atoms, Nuclei): short and formula-based.

• Ray Optics and Wave Optics: mostly direct formula use.

• Electrostatics and Capacitors: predictable problem types.

• Thermodynamics and Kinetic Theory: concept plus a few formulas.

Numerical vs Conceptual Questions

Physics mixes numerical questions (you calculate) and conceptual ones (you reason without much maths). Numerical questions in NEET are usually short and need one or two steps. Conceptual ones test your understanding of definitions, graphs and units.

Practice both. For each chapter, solve 15-20 numerical questions and 10 conceptual ones.

Physics Chapters That Repeat the Same Question Types

Some chapters keep asking the same style of question year after year. Learn these patterns:

• Current Electricity: Kirchhoff's rules, series and parallel circuits, Wheatstone bridge.

• Optics: lens and mirror formulas, refraction at surfaces, Young's double-slit.

• Modern Physics: photoelectric equation, energy levels of the hydrogen atom, nuclear binding energy.

• Mechanics: projectile motion, friction on slopes, collisions.

Keep a one-page formula sheet for each of these chapters.

NEET 2027 Chemistry Chapter-Wise Weightage

Chemistry has 45 questions worth 180 marks, spread over three branches. One analysis finds Chemical Bonding, Organic Chemistry, Coordination Compounds, and Electrochemistry together make up 35–40% of the subject.

Physical vs Organic vs Inorganic Chemistry Weightage

The three branches share the paper in roughly equal parts, with small changes each year.

Branch	What it covers	How to study
Physical	Mole concept, equilibrium, thermodynamics, electrochemistry, kinetics	Practice numericals daily
Organic	Basic principles (GOC), hydrocarbons, functional groups, biomolecules	Learn reactions and mechanisms
Inorganic	Periodic table, bonding, p, d and f block, coordination compounds	Read NCERT and memorise

NCERT-Based Inorganic Chemistry Questions

Inorganic questions mostly come straight from NCERT text. You can score full marks here if you read the book carefully.

• Focus on tables, trends, exceptions, and colours of compounds.

• Make short notes on periodic trends, oxidation states, and properties.

• Revise weekly, since inorganic depends on memory.

Easiest Chemistry Chapters for NEET 2027

Easy chapters are quick to finish and pay off fast. Start with these:

• Chemical Bonding

• Periodic Classification and Periodicity

• Coordination Compounds

• Electrochemistry (basic formulas)

• Biomolecules and Polymers

Organic Reaction Mechanisms vs Named Reactions

Both appear, but mechanisms carry more weight because they help with many questions at once. Learn how electrons move in reactions like SN1, SN2, and elimination. Then memorise named reactions such as Aldol, Cannizzaro, Sandmeyer, and Hoffmann bromamide.

Tip: Make a reaction map for each functional group. Show how one compound changes into another.

Chapter Weightage Trend Analysis (2021 to 2026)

Trend analysis shows which chapters NEET asks about every year and which ones swing up and down. Consistent chapters are safer bets. Volatile chapters can give a surprise, so treat them as second priority.

Consistent vs volatile chapters:

Type	What it means	Examples of where they appear
Consistent	Asked every year with a similar number of questions	Human Physiology, Genetics, core Mechanics and Electricity
Volatile	Question count changes a lot	Many smaller Chemistry and Physics chapters

Two rules for reading trends:

• Count only chapters that remain in the 79-chapter syllabus. Papers from earlier years contain questions from removed chapters.

• Compare average marks, not a single year. A chapter with 5 questions in one paper and 1 in the next averages 3.

Which NEET 2027 Chapters to Study First

Study high-weightage, low-difficulty chapters first. This gives the most marks per hour of study.

Tier	What it includes	Suggested share of study time
Must-Do	High-weightage chapters, such as Human Physiology, Genetics, Current Electricity, Chemical Bonding	About 50%
Should-Do	Medium-weightage chapters with steady questions	About 35%
Low-Return	Low-weightage chapters with irregular questions	About 15%

Example week: Spend four days on Must-Do chapters, two days on Should-Do chapters, and one day on revision or Low-Return topics.

NEET 2027 Target Score Planner

A target score planner tells you how many correct answers you need. It also helps you split marks across subjects.

Example: target 600

• If you attempt all 180 questions, you need about 156 correct and 24 wrong. (156 × 4 = 624, minus 24 = 600.)

• If you attempt 170 questions, you need about 154 correct and 16 wrong.

• One possible split: Biology 320, Chemistry 160, Physics 120.

Rule: Each wrong answer costs 5 marks in effect (you lose 1 and miss the 4 you could have won). Do not guess when you cannot eliminate at least two options.

NEET 2027 Chapter Tracker (Free)

A chapter tracker helps you see what you finished and what you must revise. Tick a chapter once you finish it, then mark it as revised each time you revise it.

How to use it:

1. Finish each chapter once and tick it.

2. Revise after 7 days, then after 30 days.

3. Add a star to chapters where you scored below 60% in practice tests.

4. Review your progress bars every Sunday.

Can You Skip Low-Weightage Chapters?

You can skip some low-weightage chapters, but only after finishing the Must-Do and Should-Do groups. Skipping too early puts marks at risk, because a chapter that gave 1 question one year may give 3 the next.

Before you skip, check:

• Its average number of questions across several years

• Its highest count in any single year

• How long it takes to finish

Rules:

• Do not skip Biology chapters. They are short, and NCERT lines give easy marks.

• Skip a hard Physics or Chemistry chapter only if it gives about 1 question on average and takes long to master.

• Skipping one chapter of 1 question costs up to 4 marks. That is fine only if you use the time to improve a bigger chapter.

Quick Quiz: Do You Know Where the Marks Are?

Try these five questions. Answers appear below.

1. How many questions does NEET 2027 Biology have?

2. How many marks do you get for one correct answer?

3. How many chapters are in the NEET 2027 syllabus after the NMC revision?

4. Whose NCERT books form the base of the syllabus: Class 9 and 10, or Class 11 and 12?

5. If you attempt all 180 questions, how many correct answers give you about 600 marks?

Answers: 1) 90. 2) 4. 3) 79. 4) Class 11 and 12. 5) About 156.

NEET 2027 Weightage FAQs

Which chapter has the highest weightage in NEET?

No single chapter leads every year. Human Physiology, Genetics, Ecology and core Mechanics regularly give the most questions in their subjects.

Will NEET 2027 weightage match previous years?

It will likely follow similar patterns, but NTA can shift questions. Use weightage to plan, and study all Must-Do and Should-Do chapters.

How many chapters are in the NEET 2027 syllabus?

The revised NMC syllabus has 79 chapters. Check the official PDF when it is released to confirm any changes.

Is Section B removed in NEET 2027?

Yes. The exam has 180 compulsory questions and no optional section. Confirm final details in the NTA information bulletin.

Which subject is the most scoring?

Biology, because it carries 360 of 720 marks and draws most questions directly from NCERT.

Is NCERT enough for NEET 2027?

NCERT is enough for most Biology and Inorganic Chemistry. Physics and Physical Chemistry also need extra problem practice.

How We Calculated This Data

We tagged each question in NEET papers from 2021 to 2026 to its NCERT chapter. We then counted questions per chapter each year and calculated averages, ranges and trends. Difficulty ratings come from how many students usually answer correctly and from question length and steps.

What the data can and cannot tell you:

• It shows past patterns. It does not predict the 2027 paper.

• Chapters removed from the syllabus are excluded from the 79-chapter count.

• Numbers are averages, so single years may differ.