NEET 2021 paper analysis
This is a chapter-wise breakdown of NEET 2021. Edurack tagged 218 questions from this paper to NCERT chapters and topics. By subject: Physics 53, Chemistry 50, Botany 52, Zoology 63.
The chapters that asked the most questions were Animal Kingdom (12), Molecular Basis of Inheritance (10), Biotechnology - Principles and Processes (8).
Counts come from Edurack's tagged question set for 2020–2026, so they can differ from other sources' counts. Use them to see where a paper's marks came from and which chapters to revise first.
Physics
53
24% of questions
Physics chapter-wise →
Chemistry
50
23% of questions
Chemistry chapter-wise →
Botany
52
24% of questions
Botany chapter-wise →
Zoology
63
29% of questions
Zoology chapter-wise →
Chapters with the most questions in NEET 2021
What changed from NEET 2020
- Biggest rise: Animal Kingdom · Zoology went from 4 to 12 questions.
- Biggest drop: The p-Block Elements · Chemistry went from 6 to 0 questions.
Most-asked topics in NEET 2021
- 1Polymerase Chain Reaction (Denaturation, Annealing, etc.) · Biotechnology - Principles and Processes · Zoology3 Qs
- 2Population Interactions (Types of Population Interactions) · Organisms and Populations · Botany2 Qs
- 3Primary and Secondary Metabolites (Examples and Function) · Biomolecules · Zoology2 Qs
- 4Birth Control (IUDS) · Reproductive Health · Zoology2 Qs
- 5Tools of Recombinant DNA Technology (Restriction Enzymes and Other Enzymes) · Biotechnology - Principles and Processes · Zoology2 Qs
- 6Biotechnological Applications in Medicine (Gene Therapy) · Biotechnology and its Applications · Zoology2 Qs
- 7Dimensional Analysis and its Applications (Finding the Dimensions of Unknowns) · Units and Measurements · Physics2 Qs
- 8Escape Speed or Escape Energy (Escape Speed) · Gravitation · Physics2 Qs
- 9Classification of Animals (Non Chordata) (Characteristic Feature and Examples… · Animal Kingdom · Zoology2 Qs
- 10Biotechnological Applications in Medicine (Molecular Diagnosis) · Biotechnology and its Applications · Zoology2 Qs
- 11Exchange of Gases (O₂ and CO₂) (Atm pO₂ and pCO₂, Alveoli, etc.) · Breathing and Exchange of Gases · Zoology2 Qs
- 12Magnetic Force (Direction of Magnetic Force, Properties of Magnetic…) · Moving Charges and Magnetism · Physics2 Qs
Topics asked for the first time in NEET 2021
These topics had no question in any earlier paper in this set.
- 1Polymerase Chain Reaction (Denaturation, Annealing, etc.) · Biotechnology - Principles and Processes · Zoology3 Qs
- 2Dimensional Analysis and its Applications (Finding the Dimensions of Unknowns) · Units and Measurements · Physics2 Qs
- 3Magnetic Force (Direction of Magnetic Force, Properties of Magnetic…) · Moving Charges and Magnetism · Physics2 Qs
- 4Escape Speed or Escape Energy (Escape Speed) · Gravitation · Physics2 Qs
- 5Acids, Bases and Salts (Arrhenius concept of Acids and Bases) · Equilibrium · Chemistry2 Qs
- 6Population Interactions (Types of Population Interactions) · Organisms and Populations · Botany2 Qs
- 7Classification of Animals (Non Chordata) (Characteristic Feature and Examples… · Animal Kingdom · Zoology2 Qs
- 8Classification of Animals (Non Chordata) (Characteristic Feature and Examples… · Animal Kingdom · Zoology2 Qs
- 9Biotechnological Applications in Medicine (Gene Therapy) · Biotechnology and its Applications · Zoology2 Qs
- 10Biotechnological Applications in Medicine (Molecular Diagnosis) · Biotechnology and its Applications · Zoology2 Qs
- 11Birth Control (IUDS) · Reproductive Health · Zoology2 Qs
- 12Exchange of Gases (O₂ and CO₂) (Atm pO₂ and pCO₂, Alveoli, etc.) · Breathing and Exchange of Gases · Zoology2 Qs
Chapters with no question in NEET 2021
Atoms, Thermodynamics, Wave Optics, Laws of Motion, Magnetism and Matter, Mechanical Properties of Solids, Waves, Circular Motion, Alcohols, Phenols and Ethers, Classification of Elements and Periodicity in Properties, The p-Block Elements, Hydrogen, Principles of Qualitative Analysis, Biodiversity and Conservation, The Living World, Strategies for Enhancement in Food Production, Chemical Coordination and Integration, Neural Control and Coordination
Practise the chapters NEET 2021 leaned on
Free NEET PYQs with solutions. Try your first 5 without logging in.
Frequently asked questions
How many questions were tagged in NEET 2021?
Edurack tagged 218 questions from NEET 2021 to chapters: Physics 53, Chemistry 50, Botany 52, Zoology 63.
Which chapter had the most questions in NEET 2021?
Animal Kingdom (Zoology) had the most, with 12 questions.
Which subject had the most questions in NEET 2021?
Zoology had the most, with 63 questions (29% of the tagged paper).
Which chapters were not asked in NEET 2021?
18 of the 98 chapters had no question, including Atoms, Thermodynamics, Wave Optics, Laws of Motion, Magnetism and Matter.
Other NEET papers
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.