JEE Main Chemistry — Chapter-wise Weightage

1551 questions from 59 papers (2024–2026): how many questions each chapter gave every year, its share of all questions, its share in the latest 5 years, and questions per paper. Tap a column heading to sort.

Chapters ✎ Make my own test Paper-wise

Chapter	2026	2025	2024	Total	Share	Last 5 yrs	Per paper	2026 trend
Physical Chemistry	170	181	164	515	33%	33%	8.7
Some Basic Concepts of Chemistry	18	27	20	65	4.2%	4.2%	1.1	3.79% ▼ 33.3% vs last year
Structure of Atom	26	22	21	69	4.4%	4.4%	1.2	5.47% ▲ 18.2% vs last year
States of Matter	·	1	·	1	0.1%	0.1%	0.0	0% ▼ 100% vs last year
Thermodynamics	21	31	22	74	4.8%	4.8%	1.3	4.42% ▼ 32.3% vs last year
Equilibrium	28	24	17	69	4.4%	4.4%	1.2	5.89% ▲ 16.7% vs last year
Redox Reactions	6	2	13	21	1.4%	1.4%	0.4	1.26% ▲ 200% vs last year
Solid State	·	·	1	1	0.1%	0.1%	0.0	0%
Solutions	23	24	22	69	4.4%	4.4%	1.2	4.84% ▼ 4.2% vs last year
Electrochemistry	21	24	28	73	4.7%	4.7%	1.2	4.42% ▼ 12.5% vs last year
Chemical Kinetics	27	26	20	73	4.7%	4.7%	1.2	5.68% ▲ 3.8% vs last year
Inorganic Chemistry	117	118	175	410	26%	26%	6.9
Classification of Elements and Periodicity in Properties	20	16	19	55	3.5%	3.5%	0.9	4.21% ▲ 25% vs last year
Chemical Bonding and Molecular Structure	22	20	43	85	5.5%	5.5%	1.4	4.63% ▲ 10% vs last year
p-Block Elements (Group 13 & 14)	8	11	15	34	2.2%	2.2%	0.6	1.68% ▼ 27.3% vs last year
Environmental Chemistry	·	·	1	1	0.1%	0.1%	0.0	0%
General Principles of Isolation of Elements	·	·	1	1	0.1%	0.1%	0.0	0%
p-Block Elements (Group 15–18)	10	9	16	35	2.3%	2.3%	0.6	2.11% ▲ 11.1% vs last year
d- and f-Block Elements	24	25	44	93	6.0%	6.0%	1.6	5.05% ▼ 4% vs last year
Coordination Compounds	33	37	36	106	6.8%	6.8%	1.8	6.95% ▼ 10.8% vs last year
Organic Chemistry	188	176	261	625	40%	40%	10.6
Organic Chemistry – Some Basic Principles and Techniques	21	24	43	88	5.7%	5.7%	1.5	4.42% ▼ 12.5% vs last year
Isomerism	9	8	16	33	2.1%	2.1%	0.6	1.89% ▲ 12.5% vs last year
Hydrocarbons	20	22	19	61	3.9%	3.9%	1.0	4.21% ▼ 9.1% vs last year
Haloalkanes and Haloarenes	15	18	27	60	3.9%	3.9%	1.0	3.16% ▼ 16.7% vs last year
Alcohols, Phenols and Ethers	13	8	30	51	3.3%	3.3%	0.9	2.74% ▲ 62.5% vs last year
Aldehydes, Ketones and Carboxylic Acids	24	24	35	83	5.4%	5.4%	1.4	5.05% same as last year
Amines	29	19	23	71	4.6%	4.6%	1.2	6.11% ▲ 52.6% vs last year
Biomolecules	22	21	20	63	4.1%	4.1%	1.1	4.63% ▲ 4.8% vs last year
Principles Related to Practical Chemistry	35	32	48	115	7.4%	7.4%	1.9	7.37% ▲ 9.4% vs last year
Out of syllabus (current exam)	·	·	1	1	0%	0%	0.0
s-Block Elements	·	·	1	1	0.1%	0.1%	0.0	0%

Papers per year: 2026: 19, 2025: 19, 2024: 21. Red = 2 or more questions per paper that year. Share = this chapter's questions ÷ all Chemistry questions in the bank. Based on past papers; it updates as more papers are added.

Most asked topics

#	Topic · chapter	Questions	In % of papers	Last 5 yrs
1	Crystal Field Theory (CFT) · Coordination Compounds	42	54%	42
2	Chemical Reactions of Amines · Amines	30	46%	30
3	Quantitative Analysis of Organic Compounds · Principles Related to Practical Chemistry	29	47%	29
4	Stoichiometry and Stoichiometric Calculations · Some Basic Concepts of Chemistry	28	42%	28
5	Methods of Purification of Organic Compounds · Principles Related to Practical Chemistry	26	42%	26
6	Qualitative Salt Analysis of Cations · Principles Related to Practical Chemistry	25	41%	25
7	Integrated Rate Law of First Order Reaction · Chemical Kinetics	24	37%	24
8	Valence Bond Theory (VBT) in Coordination Compounds · Coordination Compounds	23	32%	23
9	VSEPR Theory and Molecular Geometry · Chemical Bonding and Molecular Structure	21	34%	21
10	Mechanism and Reactivity of SN1 and SN2 · Haloalkanes and Haloarenes	21	31%	21
11	Group 13 Elements (Boron Family) · p-Block Elements (Group 13 & 14)	21	32%	21
12	Magnetic Properties of d-Block Elements and Formation of Coloured Ions · d- and f-Block Elements	20	34%	20
13	Ionisation Enthalpy · Classification of Elements and Periodicity in Properties	19	32%	19
14	Molecular Orbital Theory (MOT) · Chemical Bonding and Molecular Structure	18	29%	18
15	Chemical Properties of Alkenes · Hydrocarbons	18	27%	18
16	Gibbs Energy Change and Equilibrium · Thermodynamics	18	29%	18
17	Nernst Equation and its Application · Electrochemistry	17	29%	17
18	Work Done in Thermodynamic Processes (Reversible, Irreversible, Free Expansion) · Thermodynamics	17	29%	17
19	Reactions of Phenols · Alcohols, Phenols and Ethers	16	22%	16
20	Aldol Condensation of Aldehydes and Ketones · Aldehydes, Ketones and Carboxylic Acids	16	27%	16
21	Group 15 Elements (Nitrogen Family) · p-Block Elements (Group 15–18)	16	27%	16
22	Chemical Reactions of Diazonium Salts, Coupling Reactions and Azo Compounds · Amines	15	24%	15
23	Monosaccharides · Biomolecules	15	25%	15
24	Abnormal Molar Mass and Abnormal Colligative Properties · Solutions	15	24%	15
25	Proteins · Biomolecules	14	24%	14

How to use this

Start with chapters that have a high Last 5 yrs share — the syllabus and paper style change, so recent years matter most.
A chapter with 1+ question per paper is a must-do: it comes in every shift.
Then practise the most asked topics above — each link opens exactly those PYQs.