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NEET 2019 against NEET 2025

What one sitting asked that the other did not — as a share of each paper, because NEET 2019 carries 158 questions and NEET 2025 carries 178. Comparing raw counts across papers of different sizes invents a trend in every row.

Asked more in NEET 2019

  • Principles of Inheritance and Variation+2.1 pp

    3.8% (6) in NEET 2019 · 1.7% (3) in NEET 2025

  • The p-Block Elements+2.0 pp

    3.2% (5) in NEET 2019 · 1.1% (2) in NEET 2025

  • Evolution+2.0 pp

    2.5% (4) in NEET 2019 · 0.6% (1) in NEET 2025

Asked more in NEET 2025

  • Organisms and Populations-2.2 pp

    0.0% (0) in NEET 2019 · 2.2% (4) in NEET 2025

Present on one paper and absent from the other

Absent from one sitting is not absent from the syllabus. A chapter carrying one question one year and none the next has told you almost nothing.

Only in NEET 2019

  • Motion in a Plane · 2
  • Mechanical Properties of Solids · 1
  • Locomotion and Movement · 2
  • Nuclei · 1
  • Neural Control and Coordination · 1
  • Magnetism and Matter · 1

Only in NEET 2025

  • Photosynthesis in Higher Plants · 2
  • Waves · 1
  • Alternating Current · 1
  • Purification and Characterisation of Organic Compounds · 2
  • Organisms and Populations · 4
  • Principles Related to Practical Chemistry · 1
  • Electrostatic Potential and Capacitance · 2
  • Haloalkanes and Haloarenes · 2

Every chapter, both papers

ChapterNEET 2019NEET 2025Change
Molecular Basis of InheritanceBotany3.2% (5)4.5% (8)-1.3 pp
BiomoleculesZoology2.5% (4)3.4% (6)-0.8 pp
Principles of Inheritance and VariationBotany3.8% (6)1.7% (3)+2.1 pp
Sexual Reproduction in Flowering PlantsBotany2.5% (4)2.8% (5)-0.3 pp
Biotechnology: Principles and ProcessesZoology1.9% (3)3.4% (6)-1.5 pp
Cell: The Unit of LifeBotany2.5% (4)2.2% (4)+0.3 pp
Plant KingdomBotany1.9% (3)2.8% (5)-0.9 pp
Human ReproductionZoology1.9% (3)2.8% (5)-0.9 pp
Human Health and DiseaseZoology1.9% (3)2.8% (5)-0.9 pp
The p-Block ElementsChemistry3.2% (5)1.1% (2)+2.0 pp
Microbes in Human WelfareBotany2.5% (4)1.7% (3)+0.8 pp
HydrocarbonsChemistry2.5% (4)1.7% (3)+0.8 pp
Chemical Coordination and IntegrationZoology1.9% (3)2.2% (4)-0.3 pp
Structural Organisation in AnimalsZoology1.9% (3)2.2% (4)-0.3 pp
ThermodynamicsChemistry1.9% (3)1.7% (3)+0.2 pp
EquilibriumChemistry1.9% (3)1.7% (3)+0.2 pp
Animal KingdomZoology1.3% (2)2.2% (4)-1.0 pp
EvolutionZoology2.5% (4)0.6% (1)+2.0 pp
OscillationsPhysics1.9% (3)1.1% (2)+0.8 pp
Biological ClassificationBotany1.9% (3)1.1% (2)+0.8 pp
Biodiversity and ConservationBotany1.9% (3)1.1% (2)+0.8 pp
Ray Optics and Optical InstrumentsPhysics1.9% (3)1.1% (2)+0.8 pp
Work, Energy and PowerPhysics1.9% (3)1.1% (2)+0.8 pp
Moving Charges and MagnetismPhysics1.3% (2)1.7% (3)-0.4 pp
Current ElectricityPhysics1.3% (2)1.7% (3)-0.4 pp
System of Particles and Rotational MotionPhysics1.3% (2)1.7% (3)-0.4 pp
Biotechnology and its ApplicationsZoology1.3% (2)1.7% (3)-0.4 pp
EcosystemBotany1.3% (2)1.7% (3)-0.4 pp
SolutionsChemistry1.3% (2)1.7% (3)-0.4 pp
Electric Charges and FieldsPhysics1.9% (3)0.6% (1)+1.3 pp
Reproductive HealthZoology1.9% (3)0.6% (1)+1.3 pp
Chemical Bonding and Molecular StructureChemistry1.3% (2)1.1% (2)+0.1 pp
GravitationPhysics1.3% (2)1.1% (2)+0.1 pp
Structure of AtomChemistry1.3% (2)1.1% (2)+0.1 pp
Plant Growth and DevelopmentBotany1.3% (2)1.1% (2)+0.1 pp
Chemical KineticsChemistry1.3% (2)1.1% (2)+0.1 pp
Electromagnetic WavesPhysics1.3% (2)1.1% (2)+0.1 pp
Laws of MotionPhysics1.3% (2)1.1% (2)+0.1 pp
Organic Chemistry: Some Basic Principles and TechniquesChemistry0.6% (1)1.7% (3)-1.1 pp
Morphology of Flowering PlantsBotany0.6% (1)1.7% (3)-1.1 pp
Units and MeasurementsPhysics0.6% (1)1.7% (3)-1.1 pp
Aldehydes, Ketones and Carboxylic AcidsChemistry0.6% (1)1.7% (3)-1.1 pp
Dual Nature of Radiation and MatterPhysics0.6% (1)1.7% (3)-1.1 pp
Organisms and PopulationsBotany0.0% (0)2.2% (4)-2.2 pp
Excretory Products and their EliminationZoology1.3% (2)0.6% (1)+0.7 pp
Cell Cycle and Cell DivisionBotany1.3% (2)0.6% (1)+0.7 pp
Thermal Properties of MatterPhysics1.3% (2)0.6% (1)+0.7 pp
Semiconductor ElectronicsPhysics1.3% (2)0.6% (1)+0.7 pp
Anatomy of Flowering PlantsBotany1.3% (2)0.6% (1)+0.7 pp
Body Fluids and CirculationZoology1.3% (2)0.6% (1)+0.7 pp
ElectrochemistryChemistry1.3% (2)0.6% (1)+0.7 pp
Breathing and Exchange of GasesZoology1.3% (2)0.6% (1)+0.7 pp
Respiration in PlantsBotany1.3% (2)0.6% (1)+0.7 pp
Mechanical Properties of FluidsPhysics1.3% (2)0.6% (1)+0.7 pp
Motion in a Straight LinePhysics0.6% (1)1.1% (2)-0.5 pp
The d- and f-Block ElementsChemistry0.6% (1)1.1% (2)-0.5 pp
Kinetic TheoryPhysics0.6% (1)1.1% (2)-0.5 pp
Classification of Elements and Periodicity in PropertiesChemistry0.6% (1)1.1% (2)-0.5 pp
AminesChemistry0.6% (1)1.1% (2)-0.5 pp
Some Basic Concepts of ChemistryChemistry0.6% (1)1.1% (2)-0.5 pp
Wave OpticsPhysics0.6% (1)1.1% (2)-0.5 pp
Coordination CompoundsChemistry0.6% (1)1.1% (2)-0.5 pp
Motion in a PlanePhysics1.3% (2)0.0% (0)+1.3 pp
Locomotion and MovementZoology1.3% (2)0.0% (0)+1.3 pp
AtomsPhysics0.6% (1)0.6% (1)+0.1 pp
Electromagnetic InductionPhysics0.6% (1)0.6% (1)+0.1 pp
Redox ReactionsChemistry0.6% (1)0.6% (1)+0.1 pp
The Living WorldBotany0.6% (1)0.6% (1)+0.1 pp
Photosynthesis in Higher PlantsBotany0.0% (0)1.1% (2)-1.1 pp
Purification and Characterisation of Organic CompoundsChemistry0.0% (0)1.1% (2)-1.1 pp
Electrostatic Potential and CapacitancePhysics0.0% (0)1.1% (2)-1.1 pp
Haloalkanes and HaloarenesChemistry0.0% (0)1.1% (2)-1.1 pp
Mechanical Properties of SolidsPhysics0.6% (1)0.0% (0)+0.6 pp
NucleiPhysics0.6% (1)0.0% (0)+0.6 pp
Neural Control and CoordinationZoology0.6% (1)0.0% (0)+0.6 pp
Magnetism and MatterPhysics0.6% (1)0.0% (0)+0.6 pp
WavesPhysics0.0% (0)0.6% (1)-0.6 pp
Alternating CurrentPhysics0.0% (0)0.6% (1)-0.6 pp
Principles Related to Practical ChemistryChemistry0.0% (0)0.6% (1)-0.6 pp

75 of 79 chapters moved by less than 1.5 percentage points and are greyed out — at these chapter sizes, a swing of one or two questions is noise, not a signal.

Two sittings are two sittings. Everything above describes what these two papers contained. None of it predicts the next one, and a chapter that fell here is not a chapter to drop — the examiners are not running a trend. The aggregate across every complete paper is the more reliable number.