Most repeated topics in NEET 2020–2026

Some NEET topics show up again and again. This list ranks topics by how many questions they produced across NEET 2020–2026 and Re-NEET 2026, and by how many of the 8 papers they appeared in. Start your revision here.

Physics Chemistry Botany Zoology

Topics asked in 5 or more of the 8 papers

These are the closest thing to "guaranteed" topics. Master them first.

1Population Interactions (Types of Population Interactions) · Organisms and Populations · Botany13 Qs · 7/8 papers
2Pollination (Types of Pollination/Agents of Pollination/Outbreed…) · Sexual Reproduction in Flowering Plants · Botany10 Qs · 7/8 papers
3Wave Nature of Matter (De Broglie Wavelength of Moving Particle.) · Dual Nature of Radiation and Matter · Physics7 Qs · 7/8 papers
4Meiosis (Meiosis I) · Cell Cycle and Cell Division · Botany9 Qs · 6/8 papers
5Where are ATP and NADPH Used? (Calvin Cycle or C3 Cycle/Primary Acceptor of… · Photosynthesis in Higher Plants · Botany7 Qs · 5/8 papers
6Polymerase Chain Reaction (Denaturation, Annealing, etc.) · Biotechnology - Principles and Processes · Zoology7 Qs · 5/8 papers
7Disorder of Muscular and Skeletal System · Locomotion and Movement · Zoology7 Qs · 5/8 papers
8General Characteristics of Alkenes (Chemical Properties) · Hydrocarbons · Chemistry5 Qs · 5/8 papers
9Packaging of the DNA Helix (Nucleosome, Histone Proteins etc.) · Molecular Basis of Inheritance · Botany5 Qs · 5/8 papers
10Productivity (NPP) · Ecosystem · Botany5 Qs · 5/8 papers
11Gel Electrophoresis (Separation and Isolation of DNA Fragments) · Biotechnology - Principles and Processes · Zoology5 Qs · 5/8 papers
12Convergent and Divergent Evolution · Evolution · Zoology5 Qs · 5/8 papers

Most repeated Physics topics

1Wave Nature of Matter (De Broglie Wavelength of Moving Particle.) · Dual Nature of Radiation and Matter · Physics7 Qs · 7/8 papers
2Combination of Capacitors (Series Grouping, Parallel Grouping) · Electrostatic Potential and Capacitance · Physics4 Qs · 4/8 papers
3Energy Stored in Capacitor (Energy Stored in Capacitor and Energy Density in…) · Electrostatic Potential and Capacitance · Physics4 Qs · 4/8 papers
4Relation Between Electric Field, Magnetic Field and Speed of Light · Electromagnetic Waves · Physics4 Qs · 4/8 papers
5Digital Electronics and Logic Gates (Logic Gates) · Semiconductor Electronics: Materials, Devices and Simple Circuits · Physics4 Qs · 3/8 papers
6Dimensions of Physical Quantities · Units and Measurements · Physics4 Qs · 3/8 papers
7Current Loop as Magnetic Dipole · Moving Charges and Magnetism · Physics4 Qs · 3/8 papers
8Polarisation (Polarisation by Reflection (Brewster's Law)) · Wave Optics · Physics4 Qs · 3/8 papers
9Combination of resistors (Combination of Resistors: Series and Parallel) · Current Electricity · Physics3 Qs · 3/8 papers
10Application of Junction Diode as Rectifier (Half-Wave Rectifier Circuit, and… · Semiconductor Electronics: Materials, Devices and Simple Circuits · Physics3 Qs · 3/8 papers
11Digital Electronics and Logic Gates (Combination of Gates) · Semiconductor Electronics: Materials, Devices and Simple Circuits · Physics3 Qs · 3/8 papers
12Semiconductor Diode (P-n Junction under Forward Bias, p-n Junction Diode…) · Semiconductor Electronics: Materials, Devices and Simple Circuits · Physics3 Qs · 3/8 papers
13Special Purpose p-n Junction Diodes (Zener Diode as Voltage Regulator) · Semiconductor Electronics: Materials, Devices and Simple Circuits · Physics3 Qs · 3/8 papers
14Refraction by Lenses (Combination of Thin Lenses in Contact) · Ray Optics and Optical Instruments · Physics3 Qs · 3/8 papers
15Magnetic Field at Centre of Circular Current Carrying Arc · Moving Charges and Magnetism · Physics3 Qs · 3/8 papers
16AC Voltage Applied to Series LCR Circuit · Alternating Current · Physics3 Qs · 3/8 papers
17Transformers · Alternating Current · Physics3 Qs · 3/8 papers
18Displacement Current (Consequences of Displacement Current) · Electromagnetic Waves · Physics3 Qs · 3/8 papers
19Important Characteristics and Nature of Electromagnetic Waves · Electromagnetic Waves · Physics3 Qs · 3/8 papers
20Mass-Energy and Nuclear Binding Energy · Nuclei · Physics3 Qs · 3/8 papers

Most repeated Chemistry topics

1Chemical Properties · The d and f-Block Elements · Chemistry6 Qs · 4/8 papers
2General Characteristics of Alkenes (Chemical Properties) · Hydrocarbons · Chemistry5 Qs · 5/8 papers
3Stoichiometry and Stoichiometric Calculations (Limiting Reagent) · Some Basic Concepts of Chemistry · Chemistry5 Qs · 4/8 papers
4Nomenclature of Organic Compounds (I.U.P.A.C System of Nomenclature) · Organic Chemistry: Some Basic Principles and Techniques · Chemistry4 Qs · 4/8 papers
5Valence Shell Electron Pair Repulsion (VSEPR) Theory (Postulates, Applications… · Chemical Bonding and Molecular Structure · Chemistry4 Qs · 4/8 papers
6Quantitative Aspects of Electrolysis and Faraday's Laws (Faraday's First Law… · Electrochemistry · Chemistry4 Qs · 3/8 papers
7Ideal and Non-ideal Solutions (Ideal Solution and Non Ideal Solutions) · Solutions · Chemistry4 Qs · 3/8 papers
8Alcohols (Chemical Properties) · Alcohols, Phenols and Ethers · Chemistry4 Qs · 3/8 papers
9Aldehydes (Methods of Preparation) · Aldehydes, Ketones and Carboxylic Acids · Chemistry3 Qs · 3/8 papers
10Chemical Reactions of Aldehydes and Ketones (Addition of Grignard Reagent) · Aldehydes, Ketones and Carboxylic Acids · Chemistry3 Qs · 3/8 papers
11Miscellaneous/Mixed Reactions · Aldehydes, Ketones and Carboxylic Acids · Chemistry3 Qs · 3/8 papers
12Magnetism · Coordination Compounds · Chemistry3 Qs · 3/8 papers
13Qualitative Analysis of Organic Compounds (Test for Nitrogen, Sulphur and… · Organic Chemistry: Some Basic Principles and Techniques · Chemistry3 Qs · 3/8 papers
14Vitamins (Important Vitamins, their Sources and the Diseases…) · Biomolecules · Chemistry3 Qs · 3/8 papers
15Nomenclature of Elements With Atomic Number > 100 · Classification of Elements and Periodicity in Properties · Chemistry3 Qs · 3/8 papers
16Periodic Properties (Ionization Energy (Enthalpy)) · Classification of Elements and Periodicity in Properties · Chemistry3 Qs · 3/8 papers
17Oxidation Number · Redox Reactions · Chemistry3 Qs · 3/8 papers
18Extraction of Iron · General Principles and Processes of Isolation of Elements · Chemistry3 Qs · 3/8 papers
19Isomerism in Coordination Compounds (Stereoisomerism) · Coordination Compounds · Chemistry3 Qs · 2/8 papers
20Group - 2 Elements: Alkaline Earth Metals (Chemical Properties) · The s-Block Elements · Chemistry3 Qs · 2/8 papers

Most repeated Botany topics

1Population Interactions (Types of Population Interactions) · Organisms and Populations · Botany13 Qs · 7/8 papers
2Pollination (Types of Pollination/Agents of Pollination/Outbreed…) · Sexual Reproduction in Flowering Plants · Botany10 Qs · 7/8 papers
3Meiosis (Meiosis I) · Cell Cycle and Cell Division · Botany9 Qs · 6/8 papers
4Where are ATP and NADPH Used? (Calvin Cycle or C3 Cycle/Primary Acceptor of… · Photosynthesis in Higher Plants · Botany7 Qs · 5/8 papers
5Loss of Biodiversity (IUCN Red List, the Evil Quartet, etc.) · Biodiversity and Conservation · Botany7 Qs · 4/8 papers
6Packaging of the DNA Helix (Nucleosome, Histone Proteins etc.) · Molecular Basis of Inheritance · Botany5 Qs · 5/8 papers
7Productivity (NPP) · Ecosystem · Botany5 Qs · 5/8 papers
8M Phase (Mitosis) · Cell Cycle and Cell Division · Botany5 Qs · 4/8 papers
9Regulation of Gene Expression (Lac-Operon) · Molecular Basis of Inheritance · Botany4 Qs · 4/8 papers
10Transcription (Initiation, Elongation and Termination Process, etc.) · Molecular Basis of Inheritance · Botany4 Qs · 4/8 papers
11Exceptions to Mendelian Principles (Co-Dominance) · Principles of Inheritance and Variation · Botany4 Qs · 4/8 papers
12Gymnosperms (General Characteristics and Importance) · Plant Kingdom · Botany4 Qs · 4/8 papers
13Pteridophytes (Characteristics and Importance) · Plant Kingdom · Botany4 Qs · 4/8 papers
14Microbes in Industrial Products (Bioactive Molecules) · Microbes in Human Welfare · Botany4 Qs · 4/8 papers
15Eukaryotic Cells (Mitochondria) · Cell: The Unit of Life · Botany4 Qs · 3/8 papers
16Interphase (G1 Phase) · Cell Cycle and Cell Division · Botany4 Qs · 3/8 papers
17Plant Growth Regulators (Effects of PGR) · Plant Growth and Development · Botany4 Qs · 3/8 papers
18Photorespiration · Photosynthesis in Higher Plants · Botany4 Qs · 3/8 papers
19Ex-Situ Conservation (Botanical Gardens, Zoological Parks, etc.) · Biodiversity and Conservation · Botany4 Qs · 3/8 papers
20Decomposition (Process Involved in Decomposition) · Ecosystem · Botany4 Qs · 3/8 papers

Most repeated Zoology topics

1Polymerase Chain Reaction (Denaturation, Annealing, etc.) · Biotechnology - Principles and Processes · Zoology7 Qs · 5/8 papers
2Disorder of Muscular and Skeletal System · Locomotion and Movement · Zoology7 Qs · 5/8 papers
3Gel Electrophoresis (Separation and Isolation of DNA Fragments) · Biotechnology - Principles and Processes · Zoology5 Qs · 5/8 papers
4Convergent and Divergent Evolution · Evolution · Zoology5 Qs · 5/8 papers
5Cloning Vectors (Plasmid (pBR322)) · Biotechnology - Principles and Processes · Zoology5 Qs · 4/8 papers
6Primary and Secondary Metabolites (Examples and Function) · Biomolecules · Zoology5 Qs · 4/8 papers
7Biotechnological Applications in Medicine (Recombinant Insulin - Humulin) · Biotechnology and its Applications · Zoology5 Qs · 4/8 papers
8Birth Control (IUDS) · Reproductive Health · Zoology5 Qs · 3/8 papers
9Enzymes (Classification and Nomenclature of Enzymes) · Biomolecules · Zoology4 Qs · 4/8 papers
10Biotechnological Applications in Agriculture (Bt Cotton) · Biotechnology and its Applications · Zoology4 Qs · 4/8 papers
11Joints (Fibrous, Cartilaginous, etc.) · Locomotion and Movement · Zoology4 Qs · 4/8 papers
12Mechanism of Muscle Contraction (Sliding Filament Theory of Muscle Contraction) · Locomotion and Movement · Zoology4 Qs · 4/8 papers
13Birth Control (Barrier Methods) · Reproductive Health · Zoology4 Qs · 4/8 papers
14Cloning Vectors (pBR322, Cosmids, etc.)u– · Biotechnology - Principles and Processes · Zoology4 Qs · 3/8 papers
15Processes of Recombinant DNA Technologies (Isolation of the Genetic Material… · Biotechnology - Principles and Processes · Zoology4 Qs · 3/8 papers
16Restriction Enzymes (Endonuclease and Exonuclease, Nomenclature of Restr…) · Biotechnology - Principles and Processes · Zoology4 Qs · 3/8 papers
17Tools of Recombinant DNA Technology (Restriction Enzymes and Other Enzymes) · Biotechnology - Principles and Processes · Zoology4 Qs · 3/8 papers
18Gametogenesis (Oogenesis) · Human Reproduction · Zoology4 Qs · 3/8 papers
19Biotechnological Applications in Agriculture (Introduction) · Biotechnology and its Applications · Zoology4 Qs · 3/8 papers
20Biotechnological Applications in Agriculture (RNA Interference) · Biotechnology and its Applications · Zoology4 Qs · 3/8 papers

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Frequently asked questions

Which topics are repeated most in NEET?

Across NEET 2020 to 2026 and Re-NEET 2026, the most repeated topic in Edurack's tagged set is Population Interactions (Types of Population Interactions) (Organisms and Populations), with 13 questions.

Are NEET questions repeated from previous years?

Topics repeat often, though questions rarely repeat word for word. Solving previous-year questions shows you which ideas NEET keeps returning to.

How should I use this list?

Revise the topics that appear in the most papers first, then solve chapter-wise PYQs on each so you see how the topic is tested.

Does a repeated topic guarantee a question next year?

No. Past frequency is a trend guide, not a promise. Use it to prioritise, but cover the whole NCERT.

Counts come from Edurack's tagged set of NEET papers 2020–2026 (including Re-NEET 2026), mapped to NCERT chapters and topics. Use them as a trend guide — past frequency doesn't guarantee what a future paper will ask.