Exam Info

JEE Main 2027 Deleted Syllabus: Every Removed Chapter and Topic, Checked Against NTA

By JEEnify Academic Team7 min readUpdated 8 October 2026

It’s easy to spend a fortnight on a chapter JEE Main stopped asking about years ago. NCERT still teaches every one of the deleted chapters, and plenty of reference books, coaching modules and old PDFs still include them, so nothing in your study material warns you.

This page lists exactly what is out of the JEE Main syllabus, checked against NTA’s official text, plus the topics that were trimmed inside chapters that stayed. That second list is the one most students miss.

Is anything deleted for JEE Main 2027?

Nothing has been announced. All the cuts below came in one go, with NTA’s revision for JEE Main 2024. The 2025 and 2026 syllabi were identical to it.

Exam year	Change to the syllabus
JEE Main 2024	Major revision: whole chapters removed in all three subjects, many topics trimmed
JEE Main 2025	No change
JEE Main 2026	No change
JEE Main 2027	Not announced yet; expected with the bulletin in late October or early November 2026

If the 2027 bulletin changes anything, we’ll add it here. Until then, prepare on the current syllabus; the JEE Main 2027 syllabus overview has the full unit list and the official PDF.

JEE Main 2026 Syllabus PDFOfficial NTA syllabus · Paper 1, 2A and 2B · 17 pages · 1.1 MBDownload

JEE Main 2027 Syllabus PDFExpected late October – early November 2026. We’ll add it here the day NTA publishes it.Coming soon

What was removed, subject by subject

Physics

Whole chapters removed	Topics trimmed inside chapters that stayed
Communication Systems	Potentiometer (Current Electricity, and from the experiments list) Radioactivity, radioactive decay law, alpha, beta and gamma rays (Atoms and Nuclei) Doppler effect (Oscillations and Waves) Transistors, transistor action and amplifiers (Electronic Devices) Resolving power of optical instruments (Optics)

Chemistry

Whole chapters removed	Topics trimmed inside chapters that stayed
States of Matter Solid State Surface Chemistry Hydrogen s-Block Elements General Principles and Processes of Isolation of Metals (metallurgy) Environmental Chemistry Polymers Chemistry in Everyday Life	p-Block Elements cut to a general introduction and periodic trends (Groups 13 to 18) Carboxylic acids cut to acidic strength and the factors affecting it

Mathematics

Whole chapters removed	Topics trimmed inside chapters that stayed
Mathematical Induction Mathematical Reasoning	Planes (Three Dimensional Geometry is now lines only) Rolle's theorem, the mean value theorem, tangents and normals (Limit, Continuity and Differentiability) Heights and distances (Trigonometry) Scalar and vector triple products (Vector Algebra stops at scalar and vector products)

NCERT chapters that aren’t JEE Main content

These are in the NCERT books but not in the JEE Main syllabus. Students sometimes call them “deleted”, but some of them were never part of JEE Main at all:

Physics: Physical World (Class 11, Chapter 1).
Mathematics: Linear Inequalities (Class 11) and Linear Programming (Class 12).

Topics people wrongly think were deleted

Some “deleted syllabus” lists online go too far. These are all still in the official JEE Main syllabus:

Topic	Where it lives now
Alcohols, phenols and ethers	Organic Compounds Containing Oxygen (with aldehydes, ketones and carboxylic acids)
Polymerisation of alkenes and alkynes	Hydrocarbons (only the separate Polymers chapter went)
Lyophilic and lyophobic sols	Principles Related to Practical Chemistry, as an experiment (Surface Chemistry itself went)
Hormones	Biomolecules, as a general introduction
Logic gates	Electronic Devices (OR, AND, NOT, NAND, NOR)
Nuclear fission and fusion, binding energy	Atoms and Nuclei (1.3 questions a paper in 2026)
Bayes’ theorem and probability distributions	Statistics and Probability

What the cuts mean for your preparation

A smaller syllabus didn’t make the paper easier. The same 75 questions now come from fewer topics, so each remaining topic gets asked more often. Two examples from 2026:

Three Dimensional Geometry lost planes and kept only lines, yet still averaged 1.5 questions a paper.
p-Block Elements shrank to periodic trends, yet still gave 1.0 a paper.

So the practical rule is: drop the removed material completely, then go deeper on what’s left. If you also sit JEE Advanced, check the JEE Main vs Advanced comparison first, since Advanced still covers some of these topics.

Practising from older question banks? Skip questions on removed topics rather than forcing yourself through them. JEEnify’s chapter-wise practice is organised by the current syllabus units. Subject by subject, the current syllabus is here: Physics, Chemistry and Maths.

Practise Physics, Chemistry & Maths — free

Drill one subject at a time with subject-wise practice tests in the real JEE interface — +4/−1 marking, a timer and instant analysis of where your marks went.

Start a Practice Test →

Key takeaways

No deletions have been announced for JEE Main 2027; every current cut dates from the 2024 revision.
Out: Communication Systems; States of Matter, Solid State, Surface Chemistry, Hydrogen, s-Block, metallurgy, Environmental Chemistry, Polymers, Chemistry in Everyday Life; Mathematical Induction and Reasoning.
Also trimmed: potentiometer, radioactivity, Doppler effect, transistors, planes, Rolle’s theorem and the mean value theorem, heights and distances.
Still in: alcohols, phenols and ethers, logic gates, fission and fusion, Bayes’ theorem.

Frequently Asked Questions

Is there any deleted syllabus for JEE Main 2027?+

No new deletions have been announced. All current removals date from NTA’s revision for JEE Main 2024; the 2025 and 2026 syllabi were unchanged. Check the 2027 bulletin, expected in late October or early November 2026.

Which Chemistry chapters are deleted from JEE Main?+

States of Matter, Solid State, Surface Chemistry, Hydrogen, s-Block Elements, metallurgy (isolation of metals), Environmental Chemistry, Polymers and Chemistry in Everyday Life.

Which Physics topics are removed from JEE Main?+

Communication Systems as a whole chapter, plus the potentiometer, radioactivity, the Doppler effect, transistors and the resolving power of optical instruments.

Which Maths topics are removed from JEE Main?+

Mathematical Induction and Mathematical Reasoning, plus planes in 3D Geometry, Rolle’s theorem and the mean value theorem, tangents and normals, heights and distances, and triple products.

Are alcohols, phenols and ethers removed from JEE Main?+

No. They are in the unit Organic Compounds Containing Oxygen in the official syllabus.

Beginning your JEE Main 2027 prep?

Create a free account, pick your subjects and get a personalized practice plan with progress tracking in under two minutes.

Create your free account →