NEET UG · Chemistry · 2017–2026

NEET Chemistry: chapter-wise weightage

All 469 Chemistry questions from ten NEET papers, by chapter, unit and topic. Which chapters carry the marks, how the questions have changed, and what is rising.

Questions in 10 years: 469; 25% of every paper
Chapters in the syllabus: 21; 9 dropped since 2024
Chapters for half the marks: 8; ranked by ten-year share
From Class 12: 54%; 2026: 53%
Easy: 47%; hard: 4.7%
Need a calculation: 24%; 2026: 31%
Use a figure: 17%; 2026: 27%
Per paper: 47; questions, on average

Key findings · NEET Chemistry

1
8 of 21 chapters carry half of the Chemistry weightage. The top five hold 33%: Thermodynamics; Coordination Compounds; Aldehydes, Ketones and Carboxylic Acids; Equilibrium; Hydrocarbons.
2
Coordination Compounds is rising fastest: 3.9 questions a paper since 2024, up from 2.1 before.
3
Alcohols, Phenols and Ethers has fallen most: 0.3 a paper since 2024, down from 1.9.
4
27% of Chemistry questions were easy in 2026, against 47% across ten years: the lowest in ten years.
5
31% of Chemistry questions in 2026 needed a calculation, against 24% over ten years.

Chapter weightage

Every Chemistry chapter, ranked

Share is the chapter's average share of the whole paper. “Weighted est.” is a model: a weighted average of past papers with recent ones counting more, scaled to 180 questions. A guide to effort, not a forecast.

Right: weighted estimate (model), and the change since 2024.

#	Chapter	Class	Share	Asked (10 yrs)	Years asked	Since 2024	Trend	Weighted est.
1	ThermodynamicsPhysical Chemistry	11	1.7%	32	10/10	3.9 vs 2.8	+1.1	3.5
2	Coordination CompoundsInorganic Chemistry	12	1.5%	27	10/10	3.9 vs 2.1	+1.9	3.4
3	Aldehydes, Ketones and Carboxylic AcidsPart droppedOrganic Chemistry	12	1.4%	27	10/10	3.2 vs 2.3	+0.9	3.1
4	HydrocarbonsOrganic Chemistry	11	1.3%	25	10/10	3.0 vs 2.2	+0.8	2.9
5	EquilibriumPhysical Chemistry	11	1.4%	26	10/10	3.2 vs 2.2	+0.9	2.7
6	Chemical Bonding and Molecular StructurePhysical Chemistry	11	1.3%	24	10/10	2.9 vs 2.0	+0.8	2.7
7	Organic Chemistry - Some Basic Principles and TechniquesOrganic Chemistry	11	1.2%	22	10/10	2.6 vs 1.9	+0.6	2.4
8	The d- and f-Block ElementsInorganic Chemistry	12	1.1%	21	10/10	2.6 vs 1.8	+0.8	2.4
9	Chemical KineticsPhysical Chemistry	12	1.1%	21	10/10	2.2 vs 1.9	+0.3	2.2
10	AminesOrganic Chemistry	12	1.0%	18	10/10	2.3 vs 1.5	+0.8	2.1
11	The p-Block Elements (Class 12)Part droppedInorganic Chemistry	12	1.2%	23	10/10	1.6 vs 2.5	-0.9	2.0
12	SolutionsPhysical Chemistry	12	0.9%	16	8/10	2.3 vs 1.3	+1.0	1.9
13	ElectrochemistryPhysical Chemistry	12	0.9%	17	10/10	1.6 vs 1.6	-0.0	1.8
14	Some Basic Concepts of ChemistryPhysical Chemistry	11	0.8%	14	9/10	2.2 vs 1.0	+1.3	1.8
15	Structure of AtomPhysical Chemistry	11	0.8%	16	10/10	1.6 vs 1.5	0.1	1.7
16	Haloalkanes and HaloarenesOrganic Chemistry	12	0.8%	16	10/10	1.6 vs 1.5	0.1	1.7
17	BiomoleculesOrganic Chemistry	12	0.8%	14	10/10	1.6 vs 1.3	+0.4	1.6
18	Classification of Elements and Periodicity in PropertiesInorganic Chemistry	11	0.7%	13	9/10	1.9 vs 1.0	+1.0	1.6
19	The p-Block Elements (Class 11)Part droppedInorganic Chemistry	11	0.7%	13	7/10	0.7 vs 1.5	-0.8	1.2
20	Redox ReactionsPhysical Chemistry	11	0.5%	10	8/10	1.3 vs 0.8	+0.5	1.2
21	Alcohols, Phenols and EthersPart droppedOrganic Chemistry	12	0.8%	15	7/10	0.3 vs 1.9	-1.6	1.0

Dropped from the NEET UG 2026 syllabus: The s-Block Elements (12), The Solid State (10), States of Matter (10), Surface Chemistry (8), General Principles and Processes of Isolation of Elements (8), Chemistry in Everyday Life (6), Environmental Chemistry (6), Hydrogen (6), Polymers (6).

Drill down

Chapter, topic, idea, question

Every Chemistry chapter, opened all the way down: its topics, the ideas inside them, and the questions themselves.

chapterAskedShareYears’17’18’19’20’21’22’23’24’25’26

Open27 · 6%6%10/1022443433
Open27 · 6%6%10/1043222336
Open26 · 6%6%10/1033322254
Open25 · 5%5%10/1032242253
Open24 · 5%5%10/10322322423
Open23 · 5%5%10/1035232222
Open22 · 5%5%10/1033222332
Open21 · 4%4%10/102222222322
Open21 · 4%4%10/10222222323
Open19 · 4%4%10/102222323
Open18 · 4%4%10/102222232
Open17 · 4%4%10/102222222
Open16 · 3%3%10/102233
Open16 · 3%3%8/102222232
Open16 · 3%3%10/10222222

Squares are the ten papers, 2017 to 2026; darker means more questions. Share is of the level above.

Year by year

Every chapter in every paper

Questions per chapter in each year's paper, chapters in the 2026 syllabus, highest weighted estimate first.

Thermodynamics32
4433222435
Coordination Compounds27
4311222336
Aldehydes, Ketones and Carboxylic Acids27
2112443433
Hydrocarbons25
3122422153
Equilibrium26
3332122541
Chemical Bonding and Molecular Structure24
3212322423
Organic Chemistry - Some Basic Principles and Techniques22
3312122332
The d- and f-Block Elements21
2212222323
Chemical Kinetics21
2222222322
Amines18
2111222232
The p-Block Elements (Class 12)23
3152322221
Solutions16
22221232
Electrochemistry17
1122222212
Some Basic Concepts of Chemistry14
211111322
Structure of Atom16
1121222221
Haloalkanes and Haloarenes16
1111223311
Biomolecules14
1212111122
Classification of Elements and Periodicity in Properties13
111211222
The p-Block Elements (Class 11)13
1222222
Redox Reactions10
21111112
Alcohols, Phenols and Ethers15
2422221

’17’18’19’20’21’22’23’24’25’26

Chapter	2017	’18	2019	’20	2021	’22	2023	’24	2025	’26	Total
Thermodynamics	4	4	3	3	2	2	2	4	3	5	32
Coordination Compounds	4	3	1	1	2	2	2	3	3	6	27
Aldehydes, Ketones and Carboxylic Acids	2	1	1	2	4	4	3	4	3	3	27
Hydrocarbons	3	1	2	2	4	2	2	1	5	3	25
Equilibrium	3	3	3	2	1	2	2	5	4	1	26
Chemical Bonding and Molecular Structure	3	2	1	2	3	2	2	4	2	3	24
Organic Chemistry - Some Basic Principles and Techniques	3	3	1	2	1	2	2	3	3	2	22
The d- and f-Block Elements	2	2	1	2	2	2	2	3	2	3	21
Chemical Kinetics	2	2	2	2	2	2	2	3	2	2	21
Amines	2	1	1	1	2	2	2	2	3	2	18
The p-Block Elements (Class 12)	3	1	5	2	3	2	2	2	2	1	23
Solutions	2	·	2	2	2	1	·	2	3	2	16
Electrochemistry	1	1	2	2	2	2	2	2	1	2	17
Some Basic Concepts of Chemistry	·	2	1	1	1	1	1	3	2	2	14
Structure of Atom	1	1	2	1	2	2	2	2	2	1	16
Haloalkanes and Haloarenes	1	1	1	1	2	2	3	3	1	1	16
Biomolecules	1	2	1	2	1	1	1	1	2	2	14
Classification of Elements and Periodicity in Properties	1	1	1	2	·	1	1	2	2	2	13
The p-Block Elements (Class 11)	1	2	2	2	·	2	2	·	·	2	13
Redox Reactions	·	2	1	1	1	·	1	1	1	2	10
Alcohols, Phenols and Ethers	2	4	2	2	·	2	2	1	·	·	15

06+questions in that year’s paper

Units

Units, ranked

Chapters grouped into NEET syllabus units. Share of the subject's ten-year questions.

Chemistry units

SHARE OF 10 YEARS

Physical Chemistry · 9 chapters · ~19.5 expected43%
Organic Chemistry · 7 chapters · ~14.8 expected33%
Inorganic Chemistry · 5 chapters · ~10.6 expected24%

Trend

Rising and falling chapters

Change in questions per paper: 2024–2026 against 2017–2023, on a 180-question paper.

Rising

Coordination Compounds+1.92.1 → 3.9 per paper · slope +0.17 a year
Some Basic Concepts of Chemistry+1.31.0 → 2.2 per paper · slope +0.16 a year
Thermodynamics+1.12.8 → 3.9 per paper · slope +0.01 a year
Solutions+1.01.3 → 2.3 per paper · slope +0.08 a year
Classification of Elements and Periodicity in Properties+1.01.0 → 1.9 per paper · slope +0.11 a year
Equilibrium+0.92.2 → 3.2 per paper · slope -0.02 a year
Aldehydes, Ketones and Carboxylic Acids+0.92.3 → 3.2 per paper · slope +0.23 a year
Chemical Bonding and Molecular Structure+0.82.0 → 2.9 per paper · slope +0.07 a year

Falling

Alcohols, Phenols and Ethers−1.61.9 → 0.3 per paper · slope -0.31 a year
The p-Block Elements (Class 12)−0.92.5 → 1.6 per paper · slope -0.17 a year
The p-Block Elements (Class 11)−0.81.5 → 0.7 per paper · slope -0.08 a year
Electrochemistry−0.01.6 → 1.6 per paper · slope +0.04 a year

Shape of the questions

How Chemistry questions have changed

Class balance, difficulty and figure use in each year's paper. Tap a year to open that paper.

Class 11 and Class 12

0%25%50%75%100%

2017
1926
2018
2322
2019
2124
2020
2124
2021
2129
2022
2128
2023
2228
2024
2426
2025
2322
2026
2124

Class 11
Class 12

Difficulty

0%25%50%75%100%

2017
2718
2018
2317
2019
1924
2020
2718
2021
3019
2022
2028
2023
1930
2024
2621
2025
1625
2026
1228

Easy
Medium
Hard

Question pattern

0%25%50%75%100%

201727272220
201820312022
201924272018
202029201827
2021441222
2022122016201012
202330121822
20241822261410
202511183313
2026241331

Recall
Concept
Application
Calculation
Figure-based
Match the lists
Two statements
Assertion–reason
Data or graph

Need a calculation

20%’17 22%’18 18%’19 27%’20 22%’21 20%’22 22%’23 26%’24 33%’25 31%’26

Use a figure

16%’17 13%’18 16%’19 9%’20 18%’21 16%’22 24%’23 16%’24 20%’25 27%’26

Topics

Chemistry topics asked most

The 20 topics with the most questions in ten years. A filled dot is a year the topic was asked.

p-Block Elements (Groups 15-18)23
The p-Block Elements (Class 12)
Aldehydes, Ketones and Carboxylic Acids22
Aldehydes, Ketones and Carboxylic Acids
d- and f-Block Elements21
The d- and f-Block Elements
Chemical Kinetics21
Chemical Kinetics
Amines and Diazonium Salts18
Amines
Solutions and Colligative Properties16
Solutions
Quantum Numbers16
Structure of Atom
Nucleophilic Substitution16
Haloalkanes and Haloarenes
Alcohols and Phenols15
Alcohols, Phenols and Ethers
Mole Concept14
Some Basic Concepts of Chemistry
Biomolecules (Chemistry)14
Biomolecules
Periodic Properties13
Classification of Elements and Periodicity in Properties
Coordination Compounds13
Coordination Compounds
VSEPR Theory13
Chemical Bonding and Molecular Structure
pH and Buffer Solutions13
Equilibrium
Hydrocarbons (Alkenes)12
Hydrocarbons
p-Block (Group 13-14)12
The p-Block Elements (Class 11)
Purification, Analysis and Isomerism of Organic Compounds11
Organic Chemistry - Some Basic Principles and Techniques
Chemical Equilibrium11
Equilibrium
Crystal Field Theory10
Coordination Compounds

Topic	Chapter	Total	Per paper	Weighted est.
p-Block Elements (Groups 15-18)	The p-Block Elements (Class 12)	23	2.2	1.9
Aldehydes, Ketones and Carboxylic Acids	Aldehydes, Ketones and Carboxylic Acids	22	2.1	2.5
d- and f-Block Elements	The d- and f-Block Elements	21	2.0	2.2
Chemical Kinetics	Chemical Kinetics	21	2.0	2.0
Amines and Diazonium Salts	Amines	18	1.7	2.0
Solutions and Colligative Properties	Solutions	16	1.6	1.7
Quantum Numbers	Structure of Atom	16	1.5	1.6
Nucleophilic Substitution	Haloalkanes and Haloarenes	16	1.5	1.6
Alcohols and Phenols	Alcohols, Phenols and Ethers	15	1.4	0.9
Mole Concept	Some Basic Concepts of Chemistry	14	1.3	1.6
Biomolecules (Chemistry)	Biomolecules	14	1.4	1.5
Periodic Properties	Classification of Elements and Periodicity in Properties	13	1.3	1.5
Coordination Compounds	Coordination Compounds	13	1.3	1.4
VSEPR Theory	Chemical Bonding and Molecular Structure	13	1.2	1.4
pH and Buffer Solutions	Equilibrium	13	1.3	1.1
Hydrocarbons (Alkenes)	Hydrocarbons	12	1.1	1.6
p-Block (Group 13-14)	The p-Block Elements (Class 11)	12	1.2	1.1
Purification, Analysis and Isomerism of Organic Compounds	Organic Chemistry - Some Basic Principles and Techniques	11	1.1	1.3
Chemical Equilibrium	Equilibrium	11	1.1	1.1
Crystal Field Theory	Coordination Compounds	10	1.0	1.1

Papers

Chemistry in each NEET paper

What does “share” mean?

A chapter's average share of the whole NEET paper over ten years. Years with 200 printed questions are scaled to 180 so they compare fairly.

Is the weighted estimate a prediction?

No. It is a weighted average of the chapter's recent share, scaled to a 180-question paper. It shows where past papers put their weight, not what the next paper will ask.