Updated 19 Oct 2026

JEE Mains chapter wise weightage 2027

A chapter's weight is its share of its subject's questions in the 29 JEE Main shift papers of 2025 and 2026 held in the ViJEEta bank, out of 100 per subject. That covers 2,071 questions over 93 chapters: Physics (37), Chemistry (28) and Mathematics (28). Every weight is recomputed from the tagged bank at build time.

Test your heaviest weak chapter Download CSV dataset (chapter-weightage-jee.csv)

Denominator and scale

Out of 100 within each subject. Denominators: Physics 699, Chemistry 665, Mathematics 707 questions, from the 2025 and 2026 shift papers (the bank holds no 2024 JEE Main shift paper).

Chapters with no weight

9 chapters have no question in these papers and are not ranked rather than shown as 0.0: Basic Essentials, Basic Maths in Chemistry, Chemistry in Everyday Life, Environmental Chemistry, General Inorganic Chemistry, Hydrogen, Solid State, Surface Chemistry, The s-block elements. Their concepts are usually asked inside other chapters.

Licence to cite

Published under CC BY 4.0. You may quote or chart this table freely with a link to https://vijeeta.com/jee/weightage and the stamp Updated 19 Oct 2026.

Rank	Chapter	Subject	Weight (/100)	Exam importance (★)	Main PYQs	Advanced PYQs
1	Coordination Compounds	Chemistry	8.1	★★★★★	54	6
2	Ray Optics	Physics	7.9	★★★★★	55	4
3	3D Geometry	Mathematics	6.6	★★★★☆	47	3
4	Matrices and Determinants	Mathematics	6.6	★★★★☆	47	4
5	Practical Chemistry	Chemistry	6.5	★★★★☆	43	4
6	Sequence and Series	Mathematics	6.4	★★★★☆	45	1
7	Rotational Motion	Physics	6.2	★★★★☆	43	2
8	Units and Measurements	Physics	5.9	★★★★☆	41	5
9	Hydrocarbons	Chemistry	5.7	★★★★☆	38	1
10	Current Electricity	Physics	5.4	★★★★☆	38	0
11	Chemical Kinetics	Chemistry	5.4	★★★★☆	36	3
12	Solutions	Chemistry	5.3	★★★★☆	35	2
13	Permutations and Combinations	Mathematics	5.2	★★★★☆	37	2
14	Vectors	Mathematics	5.1	★★★★☆	36	5
15	Chemical Bonding	Chemistry	5.1	★★★★☆	34	5
16	Mole and Equivalent Concept	Chemistry	5.1	★★★★☆	34	1
17	Aldehydes and Ketones	Chemistry	5.0	★★★★☆	33	7
18	Electrochemistry	Chemistry	5.0	★★★★☆	33	4
19	Electrostatics	Physics	4.9	★★★★☆	34	3
20	Thermodynamics and Thermochemistry	Chemistry	4.8	★★★★☆	32	2
21	Definite Integrals	Mathematics	4.7	★★★★☆	33	4
22	Fluid Mechanics	Physics	4.6	★★★★☆	32	4
23	Relation and Functions	Mathematics	4.5	★★★★☆	32	7
24	Thermodynamics	Physics	4.4	★★★☆☆	31	4
25	Structure of Atom	Chemistry	4.4	★★★☆☆	29	2
26	Wave Optics	Physics	4.3	★★★☆☆	30	4
27	Biomolecules	Chemistry	4.2	★★★☆☆	28	4
28	General Organic Chemistry	Chemistry	4.2	★★★☆☆	28	1
29	Magnetic Effects of Current	Physics	4.1	★★★☆☆	29	3
30	Area Under Curves	Mathematics	4.1	★★★☆☆	29	2
31	Complex Numbers	Mathematics	4.1	★★★☆☆	29	4
32	Differential Equation	Mathematics	4.1	★★★☆☆	29	2
33	Straight Lines and Pair of Straight Lines	Mathematics	4.1	★★★☆☆	29	0
34	Amines	Chemistry	4.1	★★★☆☆	27	0
35	Binomial Theorem	Mathematics	4.0	★★★☆☆	28	1
36	Probability	Mathematics	4.0	★★★☆☆	28	5
37	Dual Nature of Radiation and Matter	Physics	3.9	★★★☆☆	27	1
38	Periodic Properties	Chemistry	3.8	★★★☆☆	25	0
39	Semiconductors, Electronic Devices and Logic Gates	Physics	3.7	★★★☆☆	26	0
40	d- and f-Block Elements	Chemistry	3.6	★★★☆☆	24	2
41	Ellipse	Mathematics	3.5	★★★☆☆	25	2
42	Alkyl and Aryl Halides	Chemistry	3.5	★★★☆☆	23	1
43	Electromagnetic Waves	Physics	3.4	★★★☆☆	24	1
44	Parabola	Mathematics	3.1	★★★☆☆	22	3
45	Electromagnetic Induction	Physics	3.0	★★★☆☆	21	4
46	Limits and Derivatives	Mathematics	3.0	★★★☆☆	21	4
47	Trigonometry	Mathematics	3.0	★★★☆☆	21	2
48	Application of Derivatives	Mathematics	2.8	★★★☆☆	20	4
49	Circles	Mathematics	2.8	★★★☆☆	20	1
50	Continuity, Differentiability and Differentiation	Mathematics	2.8	★★★☆☆	20	2
51	Sets, Relations and Functions	Mathematics	2.8	★★★☆☆	20	0
52	Kinetic Theory of Gases	Physics	2.7	★★★☆☆	19	0
53	Waves	Physics	2.7	★★★☆☆	19	4
54	Work, Energy and Power	Physics	2.7	★★★☆☆	19	1
55	Capacitance	Physics	2.6	★★★☆☆	18	1
56	Chemical Equilibrium	Chemistry	2.6	★★★☆☆	17	0
57	Quadratic Equations	Mathematics	2.4	★★☆☆☆	17	2
58	Gravitation	Physics	2.3	★★☆☆☆	16	3
59	Inverse Trigonometric Functions	Mathematics	2.3	★★☆☆☆	16	2
60	Atoms	Physics	2.1	★★☆☆☆	15	4
61	Nuclei	Physics	2.1	★★☆☆☆	15	0
62	Simple Harmonic Motion	Physics	2.1	★★☆☆☆	15	3
63	Hyperbola	Mathematics	2.1	★★☆☆☆	15	1
64	Alcohols, Phenols and Ethers	Chemistry	2.1	★★☆☆☆	14	2
65	Alternating Current	Physics	2.0	★★☆☆☆	14	1
66	Indefinite Integration	Mathematics	2.0	★★☆☆☆	14	0
67	Statistics	Mathematics	2.0	★★☆☆☆	14	1
68	Ionic Equilibrium	Chemistry	2.0	★★☆☆☆	13	2
69	p-Block Elements (Group 13 and 14)	Chemistry	2.0	★★☆☆☆	13	0
70	Mechanical Properties of Solids	Physics	1.9	★★☆☆☆	13	0
71	Motion in a Plane	Physics	1.9	★★☆☆☆	13	1
72	p-Block Elements (Group 15 to 18)	Chemistry	1.8	★★☆☆☆	12	6
73	Electric Flux and Gauss's Law	Physics	1.7	★★☆☆☆	12	4
74	Heat, Temperature and Calorimetry	Physics	1.7	★★☆☆☆	12	1
75	Motion in a Straight Line	Physics	1.7	★★☆☆☆	12	1
76	Basic Mathematics	Mathematics	1.7	★★☆☆☆	12	1
77	Carboxylic Acid and Its Derivatives	Chemistry	1.7	★★☆☆☆	11	2
78	Redox Reactions	Chemistry	1.7	★★☆☆☆	11	0
79	Centre of Mass, Momentum and Collision	Physics	1.4	★★☆☆☆	10	2
80	Laws of Motion	Physics	1.4	★★☆☆☆	10	1
81	Gaseous State	Chemistry	1.2	★★☆☆☆	8	2
82	General Organic Chemistry (Revision) and Isomerism	Chemistry	1.1	★★☆☆☆	7	0
83	Circular Motion	Physics	1.0	★★☆☆☆	7	0
84	Heat Transfer	Physics	1.0	★★☆☆☆	7	1
85	Experimental Physics	Physics	0.9	★☆☆☆☆	6	1
86	Magnetism and Matter	Physics	0.9	★☆☆☆☆	6	0
87	Human Eye and Optical Instruments	Physics	0.4	★☆☆☆☆	3	0
88	Relative Motion	Physics	0.4	★☆☆☆☆	3	0
89	Basic Mathematics in Physics	Physics	0.3	★☆☆☆☆	2	0
90	Friction	Physics	0.3	★☆☆☆☆	2	0
91	Metallurgy	Chemistry	0.3	★☆☆☆☆	2	0
92	Polymers	Chemistry	0.2	★☆☆☆☆	1	0
93	Conic Sections	Mathematics	0.1	★☆☆☆☆	1	1