Updated 19 Oct 2026

NEET chapter wise weightage 2027

Every chapter in NEET UG Physics, Chemistry, Botany and Zoology is ranked below by its measured share of tagged past NEET papers (2,906 PYQs in the ViJEEta bank, Updated 19 Oct 2026). ★ denotes exam importance within each subject.

How it is computed: a chapter's tagged NEET PYQs divided by all tagged NEET PYQs of its subject in the bank, times 100, with repeated questions counted once. Denominators: Physics 758, Chemistry 707, Botany 793, Zoology 648. The bank labels the set NEET 2013–2026 but does not store each question's year. Download the CSV. Updated 19 Oct 2026.

Test your heaviest NEET chapter Practise on the 180-row NEET OMR sheet NEET Biology (90 Qs) breakdown

Rank	Chapter	Subject	Weight (/100 of subject)	Exam importance (★)	Tagged PYQs	Practice questions
1	Biotechnology: Principles and Processes	Zoology	11.0	★★★★★	71	493
2	Chemical Bonding and Molecular Structure	Chemistry	9.2	★★★★★	65	679
3	Molecular Basis of Inheritance	Botany	9.1	★★★★★	72	588
4	Animal Kingdom	Zoology	8.5	★★★★★	55	697
5	Biomolecules	Zoology	8.3	★★★★★	54	610
6	Cell: The Unit of Life	Botany	8.1	★★★★★	64	524
7	Morphology of Flowering Plants	Botany	7.9	★★★★★	63	591
8	Principles of Inheritance and Variation	Botany	7.9	★★★★★	63	525
9	Human Reproduction	Zoology	7.9	★★★★★	51	593
10	Evolution	Zoology	7.6	★★★★★	49	561
11	Biological Classification	Botany	7.1	★★★★★	56	606
12	Current Electricity	Physics	7.1	★★★★★	54	450
13	Human Health and Disease	Zoology	6.9	★★★★☆	45	581
14	Coordination Compounds	Chemistry	6.5	★★★★☆	46	517
15	Cell Cycle and Cell Division	Botany	6.4	★★★★☆	51	451
16	Sexual Reproduction in Flowering plants	Botany	6.4	★★★★☆	51	543
17	Body Fluids and Circulation	Zoology	6.0	★★★★☆	39	526
18	Hydrocarbons	Chemistry	5.9	★★★★☆	42	505
19	Solutions	Chemistry	5.7	★★★★☆	40	461
20	Chemical Coordination and Integration	Zoology	5.6	★★★★☆	36	482
21	Semiconductor Electronics : Materials, Devices and Simple Circuits	Physics	5.5	★★★★☆	42	334
22	Biodiversity and Its Conservation	Botany	5.3	★★★★☆	42	477
23	Dual Nature of Radiation and Matter	Physics	5.3	★★★★☆	40	224
24	System of Particles and Rotational Motion	Physics	5.3	★★★★☆	40	515
25	Breathing and Exchange of Gases	Zoology	5.2	★★★★☆	34	463
26	Reproductive Health	Zoology	5.2	★★★★☆	34	423
27	Ray Optics and Optical Instruments	Physics	5.1	★★★★☆	39	447
28	Locomotion and Movement	Zoology	5.1	★★★★☆	33	421
29	Alcohols, Phenols, and Ethers	Chemistry	5.0	★★★★☆	35	478
30	Ecosystem	Botany	4.7	★★★★☆	37	393
31	Organisms and Populations	Botany	4.7	★★★★☆	37	304
32	Moving Charges and Magnetism	Physics	4.6	★★★★☆	35	420
33	Structural Organisation in Animals	Zoology	4.6	★★★★☆	30	517
34	Anatomy of Flowering Plants	Botany	4.5	★★★★☆	36	481
35	Chemical Kinetics	Chemistry	4.5	★★★★☆	32	411
36	Biotechnology and Its Applications	Zoology	4.5	★★★★☆	29	305
37	d- and f-Block Elements	Chemistry	4.4	★★★☆☆	31	365
38	Photosynthesis in Higher Plants	Botany	4.3	★★★☆☆	34	483
39	Electrostatic Potential and Capacitance	Physics	4.2	★★★☆☆	32	484
40	Electrochemistry	Chemistry	4.2	★★★☆☆	30	453
41	Thermodynamics	Chemistry	4.2	★★★☆☆	30	517
42	Amines	Chemistry	4.1	★★★☆☆	29	393
43	Biomolecules	Chemistry	4.1	★★★☆☆	29	278
44	Plant Growth and Development	Botany	4.0	★★★☆☆	32	406
45	Laws of Motion	Physics	4.0	★★★☆☆	30	565
46	Aldehydes and Ketones	Chemistry	4.0	★★★☆☆	28	449
47	Environmental Issues	Botany	3.9	★★★☆☆	31	48
48	Microbes in Human Welfare	Zoology	3.9	★★★☆☆	25	287
49	Alternating Current	Physics	3.8	★★★☆☆	29	311
50	Gravitation	Physics	3.8	★★★☆☆	29	344
51	Plant Kingdom	Botany	3.7	★★★☆☆	29	507
52	Kinetic Theory of Gases	Physics	3.6	★★★☆☆	27	223
53	Work, Energy and Power	Physics	3.6	★★★☆☆	27	512
54	p-Block Elements (Group 15 to 18)	Chemistry	3.5	★★★☆☆	25	262
55	Wave Optics	Physics	3.4	★★★☆☆	26	325
56	Ionic Equilibrium	Chemistry	3.4	★★★☆☆	24	419
57	Some Basic Concepts of Chemistry	Chemistry	3.4	★★★☆☆	24	417
58	Structure of an Atom	Chemistry	3.4	★★★☆☆	24	435
59	Digestion and Absorption	Zoology	3.4	★★★☆☆	22	126
60	Units and Measurement	Physics	3.2	★★★☆☆	24	234
61	Neural Control and Coordination	Zoology	3.2	★★★☆☆	21	396
62	Classification of Elements and Periodicity	Chemistry	3.1	★★★☆☆	22	448
63	Excretory Products and Their Elimination	Zoology	3.1	★★★☆☆	20	436
64	Atoms	Physics	3.0	★★★☆☆	23	191
65	Oscillations	Physics	3.0	★★★☆☆	23	324
66	Organic Chemistry: Some Basic Principles and Techniques	Chemistry	3.0	★★★☆☆	21	637
67	Mechanical Properties of Fluids	Physics	2.9	★★★☆☆	22	392
68	Nuclei	Physics	2.9	★★★☆☆	22	168
69	Waves	Physics	2.9	★★★☆☆	22	347
70	Motion in a Straight Line	Physics	2.8	★★★☆☆	21	369
71	Chemical Equilibrium	Chemistry	2.8	★★★☆☆	20	385
72	Redox Reactions	Chemistry	2.7	★★★☆☆	19	375
73	p-Block Elements (Group 13 and 14)	Chemistry	2.7	★★★☆☆	19	250
74	Electric Charges and Fields	Physics	2.6	★★★☆☆	20	379
75	Electromagnetic Induction	Physics	2.6	★★★☆☆	20	333
76	Electromagnetic Waves	Physics	2.6	★★★☆☆	20	148
77	Respiration in Plants	Botany	2.5	★★★☆☆	20	426
78	Practical Chemistry	Chemistry	2.5	★★★☆☆	18	249
79	Motion in a Plane	Physics	2.4	★★☆☆☆	18	363
80	Thermal Properties of Matter	Physics	2.4	★★☆☆☆	18	360
81	Haloalkanes and Haloarenes	Chemistry	2.4	★★☆☆☆	17	409
82	Basic Maths and Vectors	Physics	2.2	★★☆☆☆	17	226
83	Strategies for Enhancement in Food Production	Botany	2.1	★★☆☆☆	17	133
84	Gasesous State*	Chemistry	2.1	★★☆☆☆	15	330
85	Transport in Plants	Botany	2.0	★★☆☆☆	16	110
86	General Organic Chemistry (Revision) and Isomerism	Chemistry	2.0	★★☆☆☆	14	244
87	Mineral Nutrition	Botany	1.9	★★☆☆☆	15	134
88	The Living World	Botany	1.9	★★☆☆☆	15	319
89	Magnetism and Matter	Physics	1.7	★★☆☆☆	13	168
90	Mechanical Properties of Solids	Physics	1.6	★★☆☆☆	12	261
91	Reproduction in Organisms	Botany	1.5	★★☆☆☆	12	64
92	Carboxylic Acids and Derivatives	Chemistry	1.1	★★☆☆☆	8	278
93	Thermodynamics	Physics	0.9	★☆☆☆☆	7	107
94	Practical Physics	Physics	0.8	★☆☆☆☆	6	33