NEET UG · 1,406 ideas · 2017–2026
What NEET asks again
Inside each topic we tagged the exact idea every question tested. Here is which ideas came back, in which chapters, in what form and after how long.
- Ideas tested
- 1,406
- in 10 papers
- Asked only once
- 76%
- 1067 ideas
- Asked twice or more
- 339
- across 90 chapters
- Asked three times or more
- 92
- 22 of them four times or more
Key findings
- 01
Of the 1,406 ideas NEET tested in ten years, 1067 (76%) were asked only once.
- 02
Only 92 ideas have been asked three or more times, and 1 reached 7.
- 03
In 2026, 41% of questions went back to an idea from an earlier paper, up from 5% in 2018.
- 04
When an idea returns, the most common gap is 1 year; 48% of returns come within two years.
- 05
Molecular Basis of Inheritance holds the most repeating ideas (12). Subjects are close: Physics 27%, Chemistry 23%, Biology 24% of ideas asked again.
24%
of ideas came back at least once
- One paper1,08477%
- Two papers24017%
- Three papers665%
- Four or more161%
1,406 ideas by how many of the ten papers asked them.
48%
of returns came within two years
GapReturnsSo far
- 1 yr11026%
- 2 yrs9748%
- 3 yrs6563%
- 4 yrs6478%
- 5 yrs4188%
- 6 yrs2593%
- 7 yrs1497%
- 8 yrs13100%
- 9 yrs1100%
Years between two papers asking the same idea, 430 returns; plus 39 times an idea was asked twice in one paper.
41%
of 2026 questions went back to an earlier idea
5
11
16
14
34
36
41
38
41%
’18’19’20’21’22’23’24’25’26
Share of each paper testing an idea asked before. It rises partly because each year has more past papers behind it.
The most repeated
Ideas asked in three papers or more
82 ideas came back in three or more of the ten papers, 16 of them in four or more. They are the closest thing NEET has to a fixed question. Open any row to see every question that tested it.
| Idea | Subject | Papers | Span | ’17’18’19’20’21’22’23’24’25’26 |
|---|---|---|---|---|
| Fundamental Chordate FeaturesAnimal Kingdom › Chordate Classes | Biology | 6 | 2020–26 | |
| Magnetic Moment and Colour of d- and f-Block IonsThe d- and f-Block Elements › d- and f-Block Elements | Chemistry | 57 questions | 2018–26 | |
Where it sits Usually asked as One-line MCQ · Application What each paper asked
The 7 questions
| ||||
| Polarisation and Malus's LawWave Optics › Single Slit Diffraction | Physics | 56 questions | 2017–25 | |
| Diseases and Their PathogensHuman Health and Disease › Human Diseases, Cancer and Drug Abuse | Biology | 56 questions | 2019–24 | |
| Stoichiometric CalculationsSome Basic Concepts of Chemistry › Mole Concept | Chemistry | 5 | 2018–26 | |
| Endocrine DisordersChemical Coordination and Integration › Endocrine Glands and Hormone Action | Biology | 5 | 2017–26 | |
| Displacement CurrentElectromagnetic Waves | Physics | 5 | 2019–25 | |
| Combined Circuit Truth TablesSemiconductor Electronics: Materials, Devices and Simple Circuits › Logic Gates | Physics | 5 | 2017–25 | |
| Microbe-Product MatchingMicrobes in Human Welfare | Biology | 5 | 2017–25 | |
| Ideal Gas EquationKinetic Theory › Kinetic Theory of Gases | Physics | 45 questions | 2020–25 | |
| Bioactive MoleculesMicrobes in Human Welfare | Biology | 4 | 2019–26 | |
| Calculating Oxidation NumbersRedox Reactions | Chemistry | 4 | 2018–26 | |
| p-n Junction: Depletion Region and BiasingSemiconductor Electronics: Materials, Devices and Simple Circuits › Semiconductor Devices | Physics | 4 | 2017–26 | |
| First Order Integrated Rate LawChemical Kinetics | Chemistry | 4 | 2017–25 | |
| Distinctive Structures of PhylaAnimal Kingdom › Animal Kingdom: Basis of Classification and Non-chordates | Biology | 4 | 2019–24 | |
| de Broglie Wavelength of ParticlesDual Nature of Radiation and Matter › Photoelectric Effect | Physics | 4 | 2017–24 | |
| Events of G1, S and G2Cell Cycle and Cell Division › Mitotic Division | Biology | 35 questions | 2020–23 | |
| Origin of Replication (ori)Biotechnology: Principles and Processes › Cloning Vectors | Biology | 34 questions | 2020–26 | |
| Down, Klinefelter and Turner SyndromesPrinciples of Inheritance and Variation › Sex Determination and Genetic Disorders | Biology | 34 questions | 2019–26 | |
| Parallel Resistors and Current DividerCurrent Electricity › Ohm's Law and Resistance | Physics | 34 questions | 2018–25 | |
| Series Resistors and Voltage DividerCurrent Electricity › Ohm's Law and Resistance | Physics | 34 questions | 2021–24 | |
| Trends in Groups 15 to 18The p-Block Elements (Class 12) › p-Block Elements (Groups 15-18) | Chemistry | 34 questions | 2018–24 | |
| Pituitary GlandChemical Coordination and Integration › Endocrine Glands and Hormone Action | Biology | 3 | 2024–26 | |
| Primary and Secondary Lymphoid OrgansHuman Health and Disease › Immunity and Lymphoid Organs | Biology | 3 | 2024–26 | |
| Photon Momentum and Effective MassDual Nature of Radiation and Matter › Photoelectric Effect | Physics | 3 | 2024–26 | |
| Positive and Negative DeviationsSolutions › Solutions and Colligative Properties | Chemistry | 3 | 2020–26 | |
| Kepler's LawsGravitation | Physics | 3 | 2018–26 | |
| Arrhenius Plot InterpretationChemical Kinetics | Chemistry | 3 | 2021–26 | |
| Molecular Shape PredictionChemical Bonding and Molecular Structure › VSEPR Theory | Chemistry | 3 | 2021–26 | |
| Sequence of Cell Cycle PhasesCell Cycle and Cell Division › Mitotic Division | Biology | 3 | 2019–26 | |
| Colostrum and IgAHuman Health and Disease › Immunity and Lymphoid Organs | Biology | 3 | 2019–26 | |
| Members of the Endomembrane SystemCell: The Unit of Life › Endomembrane System and Cell Theory | Biology | 3 | 2021–26 | |
| Blood CoagulationBody Fluids and Circulation › Blood Composition, Groups and Coagulation | Biology | 3 | 2021–26 | |
| Balancing Redox EquationsRedox Reactions | Chemistry | 3 | 2018–26 | |
| Spectrochemical Series UsageCoordination Compounds › Crystal Field Theory | Chemistry | 3 | 2020–26 | |
| Pancreatic HormonesChemical Coordination and Integration › Endocrine Glands and Hormone Action | Biology | 3 | 2019–26 | |
| Degrees of Freedom and Internal EnergyKinetic Theory › Kinetic Theory of Gases | Physics | 3 | 2017–26 | |
| OpioidsHuman Health and Disease › Human Diseases, Cancer and Drug Abuse | Biology | 3 | 2018–26 | |
| ABO Blood Group InheritancePrinciples of Inheritance and Variation › Mendelian Inheritance | Biology | 3 | 2017–26 | |
| Rectifiers and FiltersSemiconductor Electronics: Materials, Devices and Simple Circuits › Semiconductor Devices | Physics | 3 | 2022–25 | |
| BioreactorsBiotechnology: Principles and Processes › Cloning Vectors | Biology | 3 | 2019–25 | |
| Enzyme Prosthetic GroupsBiomolecules › Biomolecule Structure | Biology | 3 | 2019–25 | |
| Ionization Enthalpy TrendsClassification of Elements and Periodicity in Properties › Periodic Properties | Chemistry | 3 | 2019–25 | |
| Hormones of Heart, Kidney and GutChemical Coordination and Integration › Endocrine Glands and Hormone Action | Biology | 3 | 2021–25 | |
| Chemical Classes of HormonesChemical Coordination and Integration › Endocrine Glands and Hormone Action | Biology | 3 | 2018–25 | |
| Error Propagation in Power FunctionsUnits and Measurements › Units and Dimensions | Physics | 3 | 2019–25 | |
| Self InductanceElectromagnetic Induction › Faraday's Law | Physics | 3 | 2018–25 | |
| Open Organ Pipe HarmonicsWaves › Standing Waves, Organ Pipes and Beats | Physics | 3 | 2018–25 | |
| Transverse Nature and E x B DirectionElectromagnetic Waves | Physics | 3 | 2018–25 | |
| Variation of g and Force with HeightGravitation | Physics | 3 | 2017–25 | |
| Asthma and EmphysemaBreathing and Exchange of Gases › Mechanism of Breathing | Biology | 3 | 2018–25 | |
| Velocity in SHMOscillations › Simple Harmonic Motion | Physics | 3 | 2017–25 | |
| RNA Polymerase III FunctionMolecular Basis of Inheritance › Transcription Process | Biology | 3 | 2021–24 | |
| Dedifferentiation and RedifferentiationPlant Growth and Development › Plant Growth and Differentiation | Biology | 3 | 2021–24 | |
| Ideal TransformerAlternating Current › LCR Circuits | Physics | 3 | 2021–24 | |
| lac z, y and a Gene ProductsMolecular Basis of Inheritance › Gene Regulation and the lac Operon | Biology | 3 | 2019–24 | |
| Pulmonary CapacitiesBreathing and Exchange of Gases › Mechanism of Breathing | Biology | 3 | 2019–24 | |
| IUD ClassificationsReproductive Health › Contraceptive Methods | Biology | 3 | 2021–24 | |
| Group 16 HydridesThe p-Block Elements (Class 12) › p-Block Elements (Groups 15-18) | Chemistry | 3 | 2019–24 | |
| Alveolar Conditions for OxyhemoglobinBreathing and Exchange of Gases › Oxygen Dissociation Curve | Biology | 3 | 2020–24 | |
| Autoimmune DisordersHuman Health and Disease › Immunity and Lymphoid Organs | Biology | 3 | 2018–24 | |
| Entropy Change PredictionThermodynamics › Gibbs Free Energy | Chemistry | 3 | 2019–24 | |
| Moment of Inertia of Standard BodiesSystem of Particles and Rotational Motion › Rotational Motion | Physics | 3 | 2018–24 | |
| Astronomical TelescopeRay Optics and Optical Instruments › Prisms, Dispersion and Optical Instruments | Physics | 3 | 2018–24 | |
| Parenchyma, Collenchyma and SclerenchymaAnatomy of Flowering Plants › Plant Tissues and Anatomy | Biology | 3 | 2017–24 | |
| Mole-Mass-Particle ConversionsSome Basic Concepts of Chemistry › Mole Concept | Chemistry | 3 | 2018–24 | |
| Ciliated Epithelium Location and FunctionStructural Organisation in Animals › Animal Tissues | Biology | 3 | 2019–23 | |
| Spring Wood, Autumn Wood and Annual RingsAnatomy of Flowering Plants › Plant Tissues and Anatomy | Biology | 3 | 2019–23 | |
| Critical Angle and TIRRay Optics and Optical Instruments › Snell's Law | Physics | 3 | 2019–23 | |
| UV Visualization of DNABiotechnology: Principles and Processes › Restriction Enzymes | Biology | 3 | 2020–23 | |
| DNA Precipitation with Chilled EthanolBiotechnology: Principles and Processes › Restriction Enzymes | Biology | 3 | 2019–23 | |
| Carbon Resistor Color CodingCurrent Electricity › Ohm's Law and Resistance | Physics | 3 | 2018–23 | |
| Cleavage of Ethers by HIAlcohols, Phenols and Ethers › Alcohols and Phenols | Chemistry | 3 | 2017–23 | |
| Hypothalamus and Limbic SystemNeural Control and Coordination › Neural System and Brain | Biology | 3 | 2018–23 | |
| Manganese in Photolysis of WaterMineral Nutrition | Biology | 3 | 2020–23 | |
| Muscular DisordersLocomotion and Movement › Human Skeleton and Musculoskeletal Disorders | Biology | 3 | 2019–22 | |
| AvesAnimal Kingdom › Chordate Classes | Biology | 3 | 2018–22 | |
| Heartwood versus SapwoodAnatomy of Flowering Plants › Plant Tissues and Anatomy | Biology | 3 | 2017–22 | |
| Phyla Sharing Combined FeaturesAnimal Kingdom › Animal Kingdom: Basis of Classification and Non-chordates | Biology | 3 | 2019–21 | |
| Classification of Amino AcidsBiomolecules › Biomolecules (Chemistry) | Chemistry | 3 | 2018–20 | |
| ViroidsBiological Classification › Viruses, Viroids, Prions and Lichens | Biology | 3 | 2017–20 | |
| Bipolar Junction TransistorSemiconductor Electronics: Materials, Devices and Simple Circuits › Semiconductor Devices | Physics | 3 | 2017–20 | |
Where it sits
Usually asked as
One-line MCQ · Application
What each paper asked
- match list on magnetic moments of ions
- identify ion by d-d transition and magnetism
The 7 questions
- 2026 · Q67The lanthanide ion having four unpaired electrons is (Given : Atomic numbers of Ce = 58, Nd = 60, Tb = 65 and Ho = 67)
mediumOne-line MCQAsked the year before
- 2025 · Q71Given below are two statements : Statement I : Ferromagnetism is considered as an extreme form of paramagnetism. Statement II : The number…
mediumTwo statementsAsked the year before
- 2024 · Q67'Spin only' magnetic moment is same for which of the following ions? A. Ti B. Cr C. Mn D. Fe E. Sc…
mediumOther
- 2024 · Q94The pair of lanthanoid ions which are diamagnetic is
hardOne-line MCQ
- 2020 · Q103The calculated spin only magnetic moment of ion is :
easyNumerical
- 2018 · Q69Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code : Column…
mediumMatch the listsNew idea
- 2018 · Q70Which one of the following ions exhibits d-d transition and paramagnetism as well ?
mediumOne-line MCQNew idea
Papers counts the different years that asked the idea. Squares are the ten papers, 2017 to 2026; a number means the idea was asked more than once that year.
Where repeats live
Chapters that keep asking the same ideas
90 chapters have at least one idea asked in two papers. Size alone does not explain it: some small chapters bring back most of what they ask, some big ones almost never repeat.
Every chapter, by size and by repeat rate
Bubble size: ideas asked again. Dashed lines: the median chapter. Chapters with fewer than 5 ideas left out.
- Physics
- Chemistry
- Biology
Swipe the chart sideways to see all of it.
Most repeating ideas
Top ten chapters. The bar splits each chapter’s ideas into asked again and asked once.
- 01Molecular Basis of Inheritance12 of 47
- 02System of Particles and Rotational Motion9 of 15
- 03Human Health and Disease9 of 16
- 04Animal Kingdom9 of 17
- 05Principles of Inheritance and Variation9 of 31
- 06Biotechnology: Principles and Processes8 of 32
- 07Chemical Coordination and Integration7 of 10
- 08Semiconductor Electronics: Materials, Devices and Simple Circuits7 of 13
- 09Anatomy of Flowering Plants7 of 15
- 10Coordination Compounds7 of 19
50%
of all repeating ideas are Biology, from 50% of the ideas
Physics27% came back · 337 ideas
24766Most asked: Polarisation and Malus's Law, in 5 papers.
Chemistry21% came back · 359 ideas
28360Most asked: Magnetic Moment and Colour of d- and f-Block Ions, in 5 papers.
Biology22% came back · 710 ideas
554114Most asked: Fundamental Chordate Features, in 6 papers.
- Once
- 2 papers
- 3 papers
- 4+
Each subject’s ideas by how many of the ten papers asked them.
32%
of calculation ideas came back, the most of any skill
- Calculation202 ideas32%
- Application163 ideas29%
- Concept288 ideas25%
- Recall629 ideas21%
- Data or graph26 ideas19%
- Multi-step85 ideas18%
- Figure reading13 ideas8%
All ideas: 24% asked again. Dot size: number of ideas.
Share of ideas asked again, by the skill the question tested.
Form
The shape repeated ideas take
Match the lists ideas come back most often: 40% of them were asked again. A line that climbs means the format is over-represented among the ideas NEET reuses.
Share of all ideas against share of repeating ideas
Navy: formats NEET reuses more than it asks. Light: formats it brings back less. Square-root scale.
Chance a format’s idea is asked again
Formats with at least 10 ideas.
- Match the lists125 ideas40%
- Assertion–reason34 ideas38%
- Numerical236 ideas28%
- Figure-based93 ideas25%
- One-line MCQ788 ideas21%
- Other83 ideas20%
- Two statements47 ideas4%
All ideas: 24% asked again. Dot size: number of ideas.
Repetition explorer
Every idea asked twice or more
Filter by subject or by how often, search by name, and sort by times asked, recency or the historical chance of coming back.
339 ideas · 808 questions
d- and f-Block Elements · Chemistry
“match list on magnetic moments of ions”
last 2026 · every 2.0 yrs · One-line MCQChordate Classes · Biology
“count correct statements on chordate features”
last 2026 · every 1.2 yrs · OtherSingle Slit Diffraction · Physics
“true statement selection on brewster's angle”
last 2025 · every 2.0 yrs · One-line MCQHuman Diseases, Cancer and Drug Abuse · Biology
“match list on diseases and pathogens”
last 2024 · every 1.3 yrs · Match the listsMole Concept · Chemistry
“numerical”
last 2026 · every 2.0 yrs · NumericalEndocrine Glands and Hormone Action · Biology
“match list on endocrine glands and disorders”
last 2026 · every 2.3 yrs · Match the listsKinetic Theory of Gases · Physics
“graph interpretation of gas isobars”
last 2025 · every 1.7 yrs · NumericalElectromagnetic Waves · Physics
“effect of frequency on capacitor reactance and displacement current”
last 2025 · every 1.5 yrs · One-line MCQLogic Gates · Physics
“truth table of combined gate circuit”
last 2025 · every 2.0 yrs · Figure-basedMicrobes in Human Welfare · Biology
“match list on microbes and products”
last 2025 · every 2.0 yrs · Match the listsMitotic Division · Biology
“true statement selection on cell cycle phase”
last 2023 · every 1.5 yrs · One-line MCQCloning Vectors · Biology
“identify vector feature by function”
last 2026 · every 3.0 yrs · Figure-basedMicrobes in Human Welfare · Biology
“identify microbial source of a drug”
last 2026 · every 2.3 yrs · One-line MCQRedox Reactions · Chemistry
“order of oxidation states”
last 2026 · every 2.7 yrs · One-line MCQSex Determination and Genetic Disorders · Biology
“count correct statements on a genetic disorder”
last 2026 · every 3.5 yrs · One-line MCQSemiconductor Devices · Physics
“effect of bias on depletion region”
last 2026 · every 3.0 yrs · Figure-basedOhm's Law and Resistance · Physics
“current ratio in series-parallel network”
last 2025 · every 3.5 yrs · Figure-basedChemical Kinetics · Chemistry
“numerical”
last 2025 · every 2.7 yrs · NumericalOhm's Law and Resistance · Physics
“numerical”
last 2024 · every 1.5 yrs · NumericalAnimal Kingdom: Basis of Classification and Non-chordates · Biology
“match list on animal phyla features”
last 2024 · every 1.7 yrs · Match the listsp-Block Elements (Groups 15-18) · Chemistry
“incorrect statement on halogens”
last 2024 · every 3.0 yrs · One-line MCQPhotoelectric Effect · Physics
“graph interpretation of de broglie wavelength”
last 2024 · every 2.3 yrs · Figure-basedElectrostatic Potential · Physics
“numerical”
last 2026 · every 2.0 yrs · NumericalEndocrine Glands and Hormone Action · Biology
“assertion-reason on reproductive hormones”
last 2026 · every 1.0 yrs · Assertion–reasonImmunity and Lymphoid Organs · Biology
“count correct statements on lymphoid organs”
last 2026 · every 1.0 yrs · OtherPhotoelectric Effect · Physics
“count correct statements on photon properties”
last 2026 · every 1.0 yrs · NumericalSolutions and Colligative Properties · Chemistry
“identify mixture showing deviation”
last 2026 · every 3.0 yrs · One-line MCQGravitation · Physics
“order of kinetic energy at orbit positions”
last 2026 · every 4.0 yrs · Figure-basedChemical Kinetics · Chemistry
“graph interpretation of arrhenius plot”
last 2026 · every 2.5 yrs · Figure-basedVSEPR Theory · Chemistry
“match list on molecular shapes”
last 2026 · every 2.5 yrs · Match the listsMitotic Division · Biology
“order of steps in a process”
last 2026 · every 3.5 yrs · One-line MCQImmunity and Lymphoid Organs · Biology
“identify component giving immunity”
last 2026 · every 3.5 yrs · One-line MCQEndomembrane System and Cell Theory · Biology
“count correct examples of a cell system”
last 2026 · every 2.5 yrs · One-line MCQBlood Composition, Groups and Coagulation · Biology
“statement i/ii on blood”
last 2026 · every 2.5 yrs · One-line MCQRedox Reactions · Chemistry
“balance redox reaction coefficients”
last 2026 · every 4.0 yrs · One-line MCQCrystal Field Theory · Chemistry
“order/ranking of ligand field strength”
last 2026 · every 3.0 yrs · One-line MCQGravitation · Physics
“escape velocity for different planet radius”
last 2026 · every 5.0 yrs · One-line MCQEndocrine Glands and Hormone Action · Biology
“true statement selection on hormone action”
last 2026 · every 3.5 yrs · One-line MCQKinetic Theory of Gases · Physics
“match list on kinetic theory formulas”
last 2026 · every 4.5 yrs · Numerical- Opioids3×
Human Diseases, Cancer and Drug Abuse · Biology
“identify source of drug”
last 2026 · every 4.0 yrs · One-line MCQ
Chance next is the calibrated historical rate at which ideas with the same record came back in the following paper. For single ideas it is low, a few percent at most. How we compute it.
Index
All 1,406 ideas, by chapter
Every idea NEET tested from 2017 to 2026, including those asked once. Open a chapter, then an idea for its questions and how they were framed.
Physics · 337 ideas
Alternating Current10
- Ideal Transformer3×
- Capacitive Reactance Calculation2×
- Resonant Frequency Condition2×
- Series LCR Impedance Calculation2×
- Average Power Consumption2018
- Half-Power Frequencies2021
- Impedance Triangle Applications2021
- LCR Phase Angle Calculation2025
- RMS and Peak Value Conversions2022
- Unity Power Factor at Resonance2020
Atoms11
- Kinetic and Potential Energy Ratios2×
- Orbit Radius Calculation2×
- Angular Momentum Quantization2025
- Atomic Neutrality and Emission Spectra2024
- Balmer Series Visible Spectrum2024
- De Broglie Wavelength in Bohr Orbit2025
- Energy Level Calculation2022
- Max/Min Wavelength Ratio2017
- Rutherford Alpha Scattering2026
- Spectral Series Limits2023
- Valid Hydrogen-like Species2020
Current Electricity23
- Parallel Resistors and Current Divider4×
- Series Resistors and Voltage Divider4×
- Carbon Resistor Color Coding3×
- Joule Heating and Electrical Power2×
- Negative Temperature Coefficient2×
- Temperature Dependence2×
- Balanced Wheatstone Bridge2024
- Batteries in Opposition2023
- Bulb Brightness in Series and Parallel2019
- Cell Internal Resistance2024
- Charge Carrier Mobility2020
- Comparing EMFs via Potentiometer2021
- Fuse Wire Melting Current2019
- Maximum Sensitivity of Wheatstone Bridge2022
- Metre Bridge Application2020
- Microscopic Model of Resistivity2021
- Microscopic Vector Form of Ohm's Law2022
- Potentiometer Principle2017
- Resistivity vs Temperature Graphs2020
- Short-Circuiting a Cell2018
- Unbalanced Wheatstone Bridge Current2025
- Voltmeter Loading Effect2019
- Wire Stretching and Resistance2017
Dual Nature of Radiation and Matter13
- de Broglie Wavelength of Particles4×
- Photon Momentum and Effective Mass3×
- Effect of Intensity vs. Frequency2×
- Threshold Wavelength Condition2×
- de Broglie Wavelength of Accelerated Electrons2020
- De Broglie Wavelength of Emitted Photoelectron2021
- De Broglie Wavelength of Photoelectron2019
- eV to Joule Conversion in Photoelectric Equations2020
- Inverse Photoelectric Effect2023
- Maximum Velocity of Photoelectrons2018
- Photon Emission Rate from Power2021
- Solving Two-State Photoelectric Equations2022
- Work Function and Threshold2023
Electric Charges and Fields13
- Dipole in a Uniform Field2×
- Charged Particle in a Uniform Electric Field2018
- Electrostatic vs Gravitational Force2017
- Field of a Solid Conducting Sphere2020
- Field of an Electric Dipole2022
- Field of Line Charge2019
- Field of Spherical Shell2019
- Force After Conductor Contact2025
- Force After Percentage Charge Transfer2019
- Force Between Dipole and Point Charge2021
- Gauss Law Statement2023
- Off-Center Charge in Cavity2026
- Polar and Non-Polar Molecules2021
Electromagnetic Induction12
- Self Inductance3×
- AC Generator Principle and Peak EMF2022
- Eddy Current Damping Direction2024
- Eddy Currents and Applications2019
- EMF from Changing Area2026
- Faraday's Law of Induction2019
- Induced Charge Calculation2017
- Magnet and Loop Relative Motion2024
- Magnetic Flux Calculation2022
- Mutual Inductance of Concentric Circular Coils2021
- Self-Inductance of a Long Solenoid2026
- Series and Parallel Inductors2026
Electromagnetic Waves8
Electrostatic Potential and Capacitance17
- Potential and Energy near a Charged Sphere3×
- Capacitance of an Isolated Spherical Conductor2×
- Charge Sharing and Common Potential2×
- Parallel Plate Capacitor Formula2×
- Potential of an Electric Dipole2×
- Capacitance with Partial Dielectric Slab2025
- Capacitors in Parallel2021
- Capacitors in Series2023
- Common Potential in Charge Sharing2021
- Electrostatic Energy Density2021
- Electrostatic Force Between Capacitor Plates2018
- Energy Stored in Capacitor2026
- Equipotential Surfaces2022
- Potential of Point Charges2023
- Relation between E and V2020
- Wheatstone Bridge of Capacitors2024
- Work and Potential Difference2017
Gravitation10
- Escape Velocity3×
- Kepler's Laws3×
- Variation of g and Force with Height3×
- Acceleration due to Gravity on a Planet2×
- Newton's Law of Gravitation2×
- Orbital Speed and Energy of Satellites2×
- Gravitational Field Intensity2022
- Gravitational Potential2023
- Gravitational Potential Energy2019
- Variation of g with Depth2019
Kinetic Theory5
Laws of Motion19
- Impulse of a Bouncing Ball2×
- Acceleration Sliding Down an Incline2025
- Angular Kinematics Variables2019
- Banking of Roads2026
- Block on a Smooth Inclined Plane2019
- Block on an Accelerating Truck2023
- Centripetal Acceleration2024
- Contact Force Between Adjacent Blocks2024
- Equilibrium via Orthogonal Components2019
- Friction in a Rotor (Death Well)2019
- Identifying Centripetal Force Sources2017
- Instantaneous Acceleration After Cutting a Spring or String2017
- Laws of Limiting Friction2018
- Momentum Conservation in Explosions2022
- Standard Atwood Machine2020
- Stationary Block on an Accelerating Wedge2018
- Tension in a Rotating Horizontal String2024
- Vector Application of F=ma2023
- Vertical Circular Motion2019
Magnetism and Matter6
Mechanical Properties of Fluids13
- Excess Pressure in Bubbles2×
- Speed of Efflux2×
- Bernoulli's Principle and Applications2023
- Equation of Continuity2026
- Lifting Force for a Disc2024
- Mass of Liquid in a Capillary Tube2020
- Power Dissipation by Viscous Drag2018
- Shape of a Liquid Surface2025
- Terminal Velocity Calculation2021
- Terminal Velocity Density Dependence2026
- U-Tube with Immiscible Liquids2017
- Velocity-Time Graph for Falling Body2022
- Work Done Expanding a Soap Bubble2023
Mechanical Properties of Solids6
Motion in a Plane5
Motion in a Straight Line10
Moving Charges and Magnetism17
- B vs r Graph for Solid Cylinder2×
- Charged Particle in a Magnetic Field2×
- Force on a Current-Carrying Conductor2×
- Magnetic Field of Solenoid2×
- Magnetic Moment of a Current Loop2×
- Biot-Savart vs. Coulomb's Law2022
- Crossed E and B Fields2025
- Field at Center of Loop2024
- Field at Center of Semicircular Loop2026
- Field due to Circular Arc2023
- Field of Thick Conductor2021
- Force on Central Parallel Wire2017
- Force on Charge Moving Parallel to Wire2021
- Magnetic Force on a Moving Charge2021
- Magnetic Levitation of Parallel Wire2026
- Moving-Coil Galvanometer Sensitivity2018
- Torque and Energy of a Current Loop2017
Nuclei13
- Alpha Emission Z and A Changes2021
- Balancing Nuclear Decay Equations2024
- Balancing Nuclear Equations2020
- Beta Plus Decay Mechanism2022
- Binding Energy per Nucleon2021
- Composition of Alpha Particles2019
- Decay Q-Value Calculation2026
- Energy Equivalent of One Gram2020
- Fraction Decayed vs Fraction Remaining2018
- Fraction Remaining After n Half-lives2021
- Half-Life and Decay Constant2023
- Nuclear Size and Density2022
- Radioactive Decay Law2017
Oscillations15
- Velocity in SHM3×
- Acceleration in SHM2018
- Cutting a Spring2017
- Frequency of Energy Oscillation2021
- Horizontal Spring-Mass Time Period2021
- Kinematic Graphs of SHM2023
- Oscillator with Changing Mass2025
- Phase Relationships in SHM Graphs2020
- Reference Circle Method (Phasors)2019
- SHM Displacement Equation2024
- Simple Pendulum Period2022
- Simple Pendulum Time Period2024
- Superposition of Parallel SHMs2019
- Velocity-Position (v-x) Graph Shape2026
- Vertical Oscillations of a Floating Body2026
Ray Optics and Optical Instruments18
- Astronomical Telescope3×
- Critical Angle and TIR3×
- Combination of Lenses Separated by a Distance2×
- Combination of Thin Lenses2×
- Snell's Law Calculation2×
- Thin Prisms and Dispersion2×
- Apparent Depth for Non-Air Observer2026
- Brewster's Angle and Snell's Law2022
- Compound Microscope2025
- Grazing Emergence Condition2024
- Index Correction on the Optical Bench2026
- Lens Maker's Formula2023
- Liquid Trapped Between Two Lenses2019
- Mirror Formula Application2018
- Optical Power Calculation2022
- Rainbow Formation2019
- Rotation of a Plane Mirror2017
- Thin Lens Formula Application2021
Semiconductor Electronics: Materials, Devices and Simple Circuits13
- Combined Circuit Truth Tables5×
- p-n Junction: Depletion Region and Biasing4×
- Bipolar Junction Transistor3×
- Rectifiers and Filters3×
- Intrinsic and Extrinsic Semiconductors2×
- Photodiodes, LEDs and Solar Cells2×
- Zener Diode as Voltage Regulator2×
- Boolean Algebra Expressions2024
- Electrical Switch Circuit Analogies2019
- Logic Gate Waveform Analysis2021
- NAND to NOT Conversion2024
- p-n Junction V-I Characteristics2018
- XOR Gate Fundamentals2018
System of Particles and Rotational Motion15
- Moment of Inertia of Standard Bodies3×
- COM Distance in Two-Body Systems2×
- Conservation of Angular Momentum2×
- Kinetic Energy of Rolling Bodies2×
- Parallel and Perpendicular Axis Theorems2×
- Rotational Equilibrium2×
- Rotational Kinematics2×
- Torque and Angular Acceleration2×
- Torque as a Cross Product2×
- Angular Momentum about Different Points2026
- Center of Gravity vs Center of Mass2017
- Coupled Rotating Bodies2017
- Motion of Center of Mass2026
- Radius of Gyration2022
- Velocities of Points on a Rolling Wheel2024
Thermal Properties of Matter8
Thermodynamics11
- First Law in Isobaric Processes2×
- Slopes on P-V Diagrams2×
- Adiabatic Work Calculation2026
- Carnot Efficiency Formula2018
- Efficiency Definition2023
- First Law in Adiabatic Processes2019
- First Law in Boiling2018
- First Law in Cyclic Processes2026
- First Law in Free Expansion2020
- Refrigerator COP Definition2017
- Work and First Law from P-V Graphs2024
Units and Measurements16
- Error Propagation in Power Functions3×
- Dimensionless Physical Quantities2×
- Dimensions of Universal Constants2×
- Dimensional Formulas2021
- Dimensions of Electrical Quantities2022
- Dimensions of Pressure and Energy Density2020
- Dimensions of Thermal Quantities2026
- Principle of Homogeneity2024
- Screw Gauge Measurements2021
- Screw Gauge Pitch and Least Count2020
- Screw Gauge Reading and Zero Error2018
- Significant Figures in Addition and Subtraction2020
- Significant Figures in Multiplication and Division2022
- Systematic vs Random Errors2023
- Vernier Caliper Least Count2024
- Vernier Caliper Reading and Zero Error2025
Wave Optics9
Waves7
Work, Energy and Power14
- Work by Variable Force2×
- Work-Energy Theorem2×
- Average Power2022
- Coefficient of Restitution2018
- Conservation of Mechanical Energy2021
- Elastic Collisions in 1D2019
- Inelastic Collisions2024
- Instantaneous Power2024
- Instantaneous Power and Velocity Relation2022
- Minimum Velocity for Vertical Circle2018
- Power of a Water Pump2021
- Spring Potential Energy2023
- Trajectory After String Goes Slack2025
- Velocity Exchange in Equal Mass Collisions2026
Chemistry · 359 ideas
Alcohols, Phenols and Ethers11
- Cleavage of Ethers by HI3×
- Cumene Process2×
- Lucas Test2×
- Acid-Catalysed Dehydration of Alcohols2023
- Acidity of Picric Acid2017
- Alcohols from Grignard Reagents2020
- Basicity of Alcohols, Ethers and Phenols2019
- Iodoform Test2018
- Ortho/Para vs Meta Position of EWG2022
- Reaction with Active Metals2018
- Reimer-Tiemann Reaction2018
Aldehydes, Ketones and Carboxylic Acids20
- Preparation of Aldehydes, Ketones and Acids3×
- Cross-Aldol Reaction Selectivity2×
- Etard Reaction2×
- Grignard Addition to Carbonyls2×
- Physical Properties of Carbonyl Compounds and Carboxylic Acids2×
- Tollens' and Fehling's Tests2×
- Acetaldehyde Self-Condensation (Crotonaldehyde)2017
- Acidity of Carboxylic Acids2025
- Aldol Dehydration to Enones2017
- Benzal Chloride Route to Benzaldehyde2020
- Carboxylic Acid Derivatives2019
- Chemoselective Hydride Reduction2021
- Claisen-Schmidt Condensation2026
- Clemmensen and Wolff-Kishner Reduction2023
- Cyanohydrins and Nitrile Hydrolysis2023
- Gattermann-Koch and Named-Reaction Matching2021
- Grignard Carboxylation2022
- Haloform Reaction2026
- Nucleophilic Addition-Elimination Products2022
- Partial Reduction to Aldehydes2025
Amines16
- Gabriel and Hoffmann Synthesis2×
- Reaction with Nitrous Acid2×
- Alkali Solubility in the Hinsberg Test2021
- Aqueous Basicity Order of Methylamines2019
- Basicity Trends in Amines2025
- Deamination via Diazonium Reduction2021
- Diazonium Replacement Reactions2023
- Direct Nitration Anomaly of Aniline2018
- Friedel-Crafts Anomaly in Aniline2024
- Hinsberg and Carbylamine Tests2020
- Mendius Reduction Reaction2025
- Reduction Methods for Amine Synthesis2026
- Reduction Products of Cyanides and Isocyanides2023
- Substituent Effects on Aniline Basicity2026
- Substituent Effects on Aniline Basicity2017
- Synthesis of Iodobenzene from Diazonium2025
Biomolecules11
- Classification of Amino Acids3×
- Vitamin Deficiency Diseases2×
- Dietary Sources of Vitamins2026
- Disaccharides and Invert Sugar2020
- Enzymes as Biocatalysts2022
- Levels of Protein Structure2026
- Monosaccharide Structure and Anomers2025
- Nucleosides and Nucleotides2023
- Polysaccharides: Starch, Cellulose and Glycogen2018
- Protein Functions and Denaturation2017
- Reactions of Open-Chain Glucose2024
Chemical Bonding and Molecular Structure20
- Molecular Shape Prediction3×
- Bond Order from MO Configuration2×
- Molecular Polarity2×
- Bond Order, Stability and Bond Length2025
- Counting Sigma and Pi Bonds2024
- Electron Pair Geometry2017
- Exceptions to the Octet Rule2023
- Existence of Diatomic Species2020
- Highest Occupied Molecular Orbital2026
- Interhalogen Compound Shapes2018
- Intramolecular Hydrogen Bonding2024
- Isostructural Species Identification2017
- Lone Pair Repulsion Effects2022
- Magnetic Behaviour from MOs2022
- MO Energy Order and s-p Mixing2023
- Pi-Only Bonding in C22019
- Polarity of Organic Functional Groups2026
- Resonance Hybrid Geometries2024
- Simple Hybridization (sp, sp2, sp3)2021
- Zero Dipole Moment Geometries2020
Chemical Kinetics14
- First Order Integrated Rate Law4×
- Arrhenius Plot Interpretation3×
- Arrhenius Equation at Two Temperatures2×
- General Half-Life Formula2×
- Arrhenius Equation Parameters2023
- Collision Theory Parameters2020
- First Order 99.9% Completion Shortcut2025
- First Order Percentage Completion Time Shortcuts2019
- Rate Law and Order Determination2023
- Rate Law from Fast Pre-Equilibrium Mechanisms2017
- Rate of Appearance and Disappearance2019
- Rate vs Concentration Graphs2022
- Reaction Coordinate Diagrams2021
- Zero Order Completion Time2026
Chemistry in Everyday Life5
Classification of Elements and Periodicity in Properties11
- Ionization Enthalpy Trends3×
- Acidic, Basic, and Amphoteric Nature of Oxides2020
- Deducing Group, Period, and Block from Atomic Number2017
- Electronegativity Trends2024
- Fluorine vs Chlorine Electron Gain Enthalpy2026
- Ionic Formulae from Configurations2018
- Ionization Enthalpy Anomaly: Nitrogen vs Oxygen2026
- IUPAC Nomenclature for Elements Z > 1002020
- IUPAC Nomenclature for Z > 1002022
- Radii of Isoelectronic Species2023
- s, p, d, f Block Classification2025
Coordination Compounds19
- Spectrochemical Series Usage3×
- Absorbed Wavelength and Splitting Energy2×
- Homoleptic vs Heteroleptic Complexes2×
- IUPAC Nomenclature Rules2×
- Nickel Complex Geometry Trio2×
- Spin-Only Magnetic Moment via CFT2×
- Werner's Theory: Molar Conductivity Ranking2×
- EDTA Structure and Denticity2021
- Facial and Meridional Isomerism in [MA3B3]2026
- Geometric Isomerism in CN62018
- Hexacyanoferrate vs Hexafluoroferrate Comparison2019
- Metal Carbonyls and Nuclearity2018
- Optical Activity in [M(AA)2B2] Cis/Trans Isomers2026
- Organometallic Compounds2017
- Stepwise and Overall Stability Constants2023
- Structural Isomerism Identification2024
- VBT: Inner vs Outer Orbital Complexes2017
- VBT: Magnetic Properties2024
- Werner's Theory: Precipitation Calculations2017
Electrochemistry12
- Full Cell Potential Calculation3×
- Degree of Dissociation from Conductivity2×
- Faraday's Laws of Electrolysis2×
- Gibbs Free Energy and EMF2×
- Cell Potential and Equilibrium2019
- Conductivity and Cell Constant2023
- Determining Electron Transfer Number (n)2024
- Kohlrausch's Law2021
- Non-Additivity of E-standard in Half-Reactions2026
- Products of Electrolysis2020
- Spontaneity of Disproportionation Reactions2018
- Variation of Molar Conductivity with Concentration2026
Environmental Chemistry6
Equilibrium23
- Group Separation of Cations2×
- Solubility Product from Solubility2×
- Standard Gibbs Free Energy and Equilibrium Constant2×
- Common-Ion Effect on Solubility2020
- Conjugate Acid-Base Pair Ka and Kb Relationship2019
- Degree of Dissociation and Equilibrium Constant2024
- Equilibrium and Rate Constants2025
- Equilibrium Concentration Calculations2022
- Henderson-Hasselbalch Equation2022
- Identifying Buffer Solutions2019
- Kp for Solid Thermal Decomposition2017
- Le Chatelier: Concentration and Pressure2018
- Le Chatelier: Temperature Effect2025
- Lewis Acids and Bases2023
- Manipulation of Equilibrium Constant2017
- pH of Acid-Base Neutralization Mixtures2018
- pH of Hydroxide Precipitation2019
- pH of Polyprotic Acids2025
- pH of Salt Solutions2024
- pH of Weak Acid-Weak Base Salt2021
- Reaction Quotient and Direction2024
- Relationship Between Kp and Kc2024
- Solubility from Ksp2026
General Principles and Processes of Isolation of Elements6
Haloalkanes and Haloarenes14
- Allylic and Benzylic Reactivity2×
- Preparation of Haloarenes2×
- Alcohols to Haloalkanes2024
- Aqueous vs Alcoholic KOH2024
- Benzyne Elimination-Addition2017
- C-X Bond Enthalpy Trend2021
- Carbocation Rearrangements2023
- Dehydrohalogenation and Zaitsev's Rule2020
- Grignard Reagents2026
- Leaving Group Ability2025
- Reactions of Haloalkanes and Haloarenes with Metals2023
- Saytzeff Rule in Dehydrohalogenation2021
- Side-Chain Halogenation of Toluene2018
- Stereochemical Outcomes2022
Hydrocarbons21
- Aromaticity and Huckel's Rule2×
- Reverse Ozonolysis (Parent Alkene Identification)2×
- Soda Lime Decarboxylation2×
- Wurtz Reaction Mechanism2×
- Acidity and s-Character Correlation2017
- Alkyne Structure and Hybridization2025
- Aromatization (Reforming)2025
- Boiling Point Trends2024
- Bromine Water Test for Unsaturation2025
- Conformational Analysis2017
- Conformational Dihedral Angles2021
- Controlled Hydrogenation (Cis/Trans)2019
- Free Radical Halogenation2025
- Geometrical Isomerism (Cis/Trans & E/Z)2025
- Halogen Addition Stereochemistry2026
- Hydration and Keto-Enol Tautomerism2017
- Lindlar's Catalyst Reduction2026
- Nomenclature of Alkenes2021
- Peroxide Effect (Anti-Markovnikov)2021
- Retro-Ozonolysis (Reactant Identification)2020
- Stability of Diene Systems2026
Hydrogen5
Organic Chemistry - Some Basic Principles and Techniques18
- Alphabetical Branch Naming2×
- Hybridisation and Sigma/Pi Bonds in Organic Molecules2×
- Lassaigne's Test for N and Halogens2×
- Types of Distillation2×
- Arenium Ion (Wheland Intermediate) Stability2018
- Chromatography2020
- Counting Isomers2025
- Electrophiles and Nucleophiles2017
- Functional Group Priority2017
- Halogen -I Effect Series2018
- Hyperconjugation Stability2020
- Intermediate Stability2024
- Kjeldahl Method2022
- Lassaigne's Test for Sulphur2026
- Non-Participating Lone Pair in Pyridine2023
- Orbital Overlap in Hyperconjugation2026
- Purification Techniques2024
- Types of Structural Isomerism2021
Polymers6
Redox Reactions5
Solutions10
Some Basic Concepts of Chemistry7
States of Matter7
Structure of Atom13
- Single-Electron Species Energy Exception3×
- Orbital Degeneracy2×
- Atomic Number, Mass Number and Particle Counts2020
- Azimuthal Quantum Number (l)2024
- Bohr Orbit Radius2022
- Electronic Filling Rules2018
- Fundamental Particles and Early Atomic Models2023
- Graphical Identification of Radial Nodes2026
- Hydrogen Spectral Series2019
- Isoelectronic Species Configurations2021
- Magnetic Quantum Number (ml)2023
- The (n+l) Rule2019
- Wave Nature of Electromagnetic Radiation2021
Surface Chemistry6
The d- and f-Block Elements14
- Magnetic Moment and Colour of d- and f-Block Ions7×
- Ionisation and Hydration Enthalpy of Transition Metal Ions2×
- Cr(II) Reducing Power and Interstitial Compounds2020
- KMnO4 in Different Media2022
- Lanthanoid Contraction2021
- Melting Points of Transition Metals2026
- Mercury(II) Halide Complexes2017
- Oxides of Transition Metals2023
- Preparation and Thermal Decomposition of KMnO42026
- Properties of Lanthanoids and Actinoids2021
- Structures of Chromate, Dichromate, Manganate and Permanganate2019
- Transition Metals as Catalysts2025
- Trends in M3+/M2+ Electrode Potentials2024
- Variable Oxidation States of Actinoids2017
The p-Block Elements (Class 11)11
- Inert Pair Effect in Group 132×
- Maximum Covalency of Boron2×
- Alums2026
- Atomic Size Anomaly in Group 132018
- Diamond vs Graphite Structure2023
- Hydrolysis Mechanism of SiCl4 vs CCl42019
- Mechanism of Carbon Monoxide Toxicity2020
- Redox Behavior of Tin and Lead2017
- Structure and Bonding in Diborane2022
- Structure of Diamond2022
- Zeolites and ZSM-5 Catalysis2020
The p-Block Elements (Class 12)14
- Trends in Groups 15 to 184×
- Group 16 Hydrides3×
- Interhalogen Compounds2×
- Noble Gases: Properties and Uses2×
- Oxoacids of Sulphur2×
- Xenon Fluorides and Oxides2×
- Ammonia and the Tetraamminecopper(II) Complex2020
- Group 15 Hydrides and Oxides2025
- Industrial Processes in the p-Block2019
- Phosphorus Halides2019
- Preparation of Halogens2026
- Reducing Properties of SO22017
- Structures of Halogen Oxides and Oxoacids2019
- Structures of Sulphur Oxoanions2017
The s-Block Elements11
- Biological Role of Mg and Ca2×
- Amphoteric Nature of BeO and Be(OH)22019
- Amphoteric Nature of Beryllium Oxides and Hydroxides2018
- Anomalous Behavior of Beryllium2021
- Biological Role of Sodium and Potassium2020
- Hydration Enthalpy of Group 1 Ions2017
- Oxide, Peroxide, and Superoxide2022
- Purification of Sodium Chloride2020
- Solution in Liquid Ammonia2023
- Structure of Beryllium Chloride2021
- Uses of Alkali Metals and Compounds2022
The Solid State6
Thermodynamics17
- Entropy Change Prediction3×
- Bond Enthalpy Calculations2018
- Entropy of Free Expansion2026
- Entropy of Isothermal Gas Expansion2021
- First Law: Delta U = q + w2017
- Free Expansion of an Ideal Gas2020
- Gibbs Energy and Equilibrium2026
- Heat Capacities2021
- Hess's Law Application2025
- Reaction Enthalpy from Energy Profiles2025
- Relation Between dH and dU2023
- Reversible Isothermal Work2024
- Temperature of Spontaneity2017
- Thermodynamic Process Types2024
- Work Against Constant External Pressure2019
- Work as Area Under a p-V Curve2022
- Work in Cyclic Processes2026
Biology · 710 ideas
Anatomy of Flowering Plants15
- Heartwood versus Sapwood3×
- Parenchyma, Collenchyma and Sclerenchyma3×
- Spring Wood, Autumn Wood and Annual Rings3×
- Cork Cambium and Periderm2×
- Dicot versus Monocot Stem Anatomy2×
- Epidermal, Ground and Vascular Tissue Systems2×
- Isobilateral Leaf and Bulliform Cells2×
- Absence of Secondary Growth in Monocots2018
- Bark and Lenticels2023
- Dicot versus Monocot Root Anatomy2018
- Endarch and Exarch Xylem2023
- Formation of the Cambial Ring2021
- Gymnosperm Xylem and Phloem2019
- Products of Vascular Cambium2017
- Radial, Conjoint, Open and Closed Bundles2022
Animal Kingdom17
- Fundamental Chordate Features6×
- Distinctive Structures of Phyla4×
- Aves3×
- Phyla Sharing Combined Features3×
- Acoelomate, Pseudocoelomate and Coelomate2×
- Body Symmetry2×
- Comparison of Fish Classes2×
- Mammalia2×
- Porifera2×
- Amphibia and Reptilia2026
- Common Names of Animals2021
- Cyclostomata2025
- Direct and Indirect Development2018
- Earthworm Morphology2021
- Echinodermata2025
- Hemichordata2017
- Homeotherms and Poikilotherms2018
Biodiversity and Conservation19
- Components of the Evil Quartet2×
- Habitat Loss and Fragmentation2×
- Species Richness of the Amazon2×
- Biosphere Reserve Zonation2017
- Earth Summit CBD Goal2019
- Earth Summit Details2023
- Ex-situ Conservation Definition2024
- Ex-situ Conservation Types2022
- Global Species Estimates2020
- In-situ Conservation Definition2022
- In-situ Conservation Types2019
- IUCN Red List Categories2024
- Latitudinal Gradient of Diversity2024
- Sacred Groves Role2018
- Scientists and Biodiversity Concepts2024
- Species-Area Relationship2017
- The Evil Quartet Concept2025
- Wildlife Safari Parks Classification2017
- Zoological Parks vs Sanctuaries2025
Biological Classification22
- Viroids3×
- Mycoplasma Characteristics2×
- Prokaryotic Cellular Organization2×
- Anoxygenic Photosynthetic Bacteria2018
- Bacterial Morphologies2026
- Bacterial Reproduction via Fission2017
- Basidiomycetes Club Fungi2018
- Diatoms as Chief Producers2018
- Exogenous Conidia in Ascomycetes2022
- Fungal Genera Classification2024
- Fungal Modes of Nutrition2019
- Fungal Role in Lichens2026
- Fungal Sexual Cycle Stages2026
- Macronucleus and Micronucleus of Ciliates2018
- Metabolic Diversity2022
- Mycelium Morphology2024
- Plasmogamy and Karyogamy2021
- Prions2026
- Protozoan Classification2018
- Types of Extremophilic Archaebacteria2017
- Whittaker's Five Kingdom Classification2025
- Yeast as a Unicellular Exception2019
Biomolecules25
- Enzyme Prosthetic Groups3×
- Temperature and Competitive Inhibition3×
- Function of GLUT-42×
- Glycosidic Linkages2×
- Holoenzyme Components2×
- Peptide Bond Formation2×
- Acidic and Basic Amino Acids2020
- Biological Roles of Biomolecules2022
- Catalytic Cycle of an Enzyme2024
- Cellulose Iodine Test Failure2023
- Chitin Structure and Composition2022
- Elemental Composition of the Body2026
- Fatty Acid Carbon Counting2021
- Functional Groups of Sugars2018
- Lectin Secondary Metabolites2019
- Lipid Structure and Esters2022
- Lipids in Acid-Insoluble Pool2017
- Most Abundant Proteins2020
- Nucleoside vs Nucleotide2025
- Phospholipid Structure and Lecithin2024
- Polypeptide Chain Terminals2023
- Primary vs. Secondary Metabolites2021
- Secondary Metabolites: Toxins and Lectins2021
- Six Classes of Enzymes2025
- Toxin Secondary Metabolites2020
Biotechnology and its Applications18
- Molecular Diagnosis Prerequisite3×
- Alkaline pH Activation2×
- Biopiracy and Patents2×
- Disulfide Bond Assembly2×
- Specific Cry Gene Targets2×
- ADA Role in Immune System2021
- Bt Toxin Source2020
- Disarmed Retroviral Vectors2018
- GEAC and Biosafety Regulation2018
- Gene Therapy Definition2021
- Golden Rice Vitamin A Enrichment2019
- Host Organism for Insulin2025
- Insulin Maturation Process2021
- Limitations of Lymphocyte Therapy2022
- Probe Hybridisation and Autoradiography2021
- RNAi Silencing Mechanism2025
- Transgenic Plants as Biopesticides2020
- Transposon Definition2022
Biotechnology: Principles and Processes32
- Origin of Replication (ori)4×
- Bioreactors3×
- DNA Precipitation with Chilled Ethanol3×
- Palindromic Sequences3×
- UV Visualization of DNA3×
- DNA Denaturation Step2×
- Exponential DNA Amplification2×
- Ti Plasmid and T-DNA2×
- Agarose Gel Electrophoresis2022
- Agarose Sieving Effect2017
- Anode Migration in Electrophoresis2025
- BAC and YAC Vectors2023
- Blue-White Screening Outcomes2025
- Chronological Sequence of PCR Steps2018
- Definition of a Plasmid2026
- DNA Migration to Anode2017
- Downstream Processing2017
- EcoRI Recognition Sequence2020
- Enzymatic Cell Lysis for DNA Isolation2026
- Ethidium Bromide Intercalation2017
- Exo vs Endonucleases2020
- Formation of Chimeric DNA2023
- Hind II Cleavage Pattern2024
- Mechanism of DNA Cleavage2020
- Phosphodiester Bond Cleavage2019
- Primer Annealing Step2026
- PvuI/PstI Site Insertional Inactivation2021
- Rationale for Gold/Tungsten in Biolistics2023
- Recombinants as White Colonies2025
- Role of DNA Ligase2025
- Selectable Markers2017
- Single Recognition Sites2022
Body Fluids and Circulation15
- Blood Coagulation3×
- AV Valve Locations2×
- P-Wave Interpretation2×
- QRS Complex Meaning2×
- Types of Leucocytes2×
- ABO Blood Groups2021
- Bundle of His Electrical Isolation2024
- Cardiac Output Calculation2019
- Double Circulation and Hepatic Portal System2017
- Erythrocytes2017
- Joint Diastole Phase2022
- Medulla Oblongata Cardiac Control2025
- Myogenic Heart Nature2017
- Plasma Proteins2018
- SA Node Intrinsic Firing Rate2026
Breathing and Exchange of Gases11
- Alveolar Conditions for Oxyhemoglobin3×
- Asthma and Emphysema3×
- Pulmonary Capacities3×
- Anatomical Dead Space2022
- Effect of pO2 on Binding2021
- Mechanism of Inspiration2020
- Normal Oxygen Delivery Rate2022
- Occupational Respiratory Disorders2018
- Partial Pressures of O2 and CO22021
- Residual Volume Keeps Alveoli Open2017
- Respiratory Volumes2018
Cell Cycle and Cell Division21
- Events of G1, S and G25×
- Sequence of Cell Cycle Phases3×
- Chiasmata Formation2×
- Kinetochore Structure and Function2×
- Quiescent G0 Phase2×
- Recombination Nodule Identification2×
- Sequence of Prophase I Stages2×
- Anaphase Chromosome Doubling2023
- Anaphase Promoting Complex (APC)2017
- Centromere Splitting2021
- DNA Replication Timing Trap2022
- Equational Division Definition2023
- Initiation of Synaptonemal Complex Dissolution2020
- Maximum Condensation in Diakinesis2026
- Metaphase Plate Alignment2017
- Mitosis in Asexual Reproduction2018
- Non-Sister Chromatid Exchange2023
- Prophase Events2022
- Spindle Fiber Composition2025
- Terminalisation2021
- Tracking Ploidy and DNA Content2021
Cell: The Unit of Life29
- Members of the Endomembrane System3×
- Chromosome Types by Centromere2×
- History of Cell Theory2×
- Mitochondrial Inner Structure2×
- Nucleolus and rRNA Synthesis2×
- Ribosomal Subunits (70S/80S)2×
- Anucleate Cells in Eukaryotes2021
- Bacterial Cell Envelope2017
- Centromere and Kinetochore2025
- Chloroplast DNA Characteristics2024
- Chromoplast Pigment Composition2026
- Chromosome Arm Nomenclature (p and q)2019
- Cilia and Flagella Structure2024
- Cis and Trans Faces of Golgi2025
- Cristae Surface Area Maximization2021
- Double-Membrane Organelle Grouping2024
- Energy Transformation Role2017
- Functions of the Cytoskeleton2023
- Golgi as Site of Glycoproteins and Glycolipids2020
- Golgi Packaging and Secretion2018
- Lipid Synthesis in SER2026
- Lysosomes2019
- Mesosomes2025
- Mitochondrial Enzyme Compartmentalization2019
- Polytene Chromosomes and Balbiani Rings2018
- Prokaryotic Inclusion Bodies2020
- Protein Processing in RER2018
- Rough versus Smooth ER2022
- Semiautonomous Nature2019
Chemical Coordination and Integration10
Digestion and Absorption15
- Anatomy of the Alimentary Canal2020
- Brunner's Glands Location and Secretion2019
- Chief Cells Secretion2023
- Chylomicrons and Lacteals2022
- Dental Formula and Milk Teeth2017
- Enterokinase Source and Function2020
- Goblet Cells Mucus Secretion2019
- Ileo-Caecal Valve Function2023
- Intrinsic Factor and Vitamin B122018
- Pancreatic Juice Enzyme Roster2017
- Paneth Cells and Lysozyme2017
- Salivary Amylase Action2022
- Sphincter of Oddi Function2021
- Succus Entericus Composition2021
- Thecodont, Diphyodont and Heterodont Dentition2018
Ecosystem16
- Detritivores vs. Decomposers2×
- Inverted Pyramid of Biomass2×
- Net Primary Productivity (NPP) Equation2×
- Trophic Level Identification2×
- Deducing Pyramid Shape from Raw Data2018
- Energy Pyramid Units2025
- Factors Affecting Decomposition2022
- GPP vs NPP Magnitude Comparison2020
- Gross Primary Productivity (GPP)2025
- Lindeman's 10 Percent Law2024
- Phosphorus Cycle2022
- Productivity and Biomass of Ecosystems2017
- Second Law of Thermodynamics in Ecosystems2025
- Standing State vs Standing Crop Distinction2021
- Upright Pyramid of Energy2026
- Vertical Stratification2017
Environmental Issues16
- Electrostatic Precipitator and Scrubber3×
- Dobson Units2×
- Biological Magnification2023
- Chlorine's Catalytic Nature2018
- CNG and Vehicular Pollution in Delhi2022
- Environmental Days and Events2018
- Eutrophication Process2018
- Montreal and Kyoto Protocols2019
- Montreal Protocol2020
- Particulates and Aerosols2017
- Planktonic Algae in Blooms2023
- Radioactive Waste Disposal2019
- Relative GHG Contribution2019
- Snow Blindness Pathology2020
- Solid Waste and Plastic Recycling2019
- Tropospheric Ozone and Smog2018
Evolution24
- Analogous Organs in Animals2×
- Directional Selection Curve Dynamics2×
- Hardy-Weinberg Equation2×
- Homologous Organs in Animals2×
- Adaptive Radiation2021
- Adaptive Radiation: Australian Marsupials2023
- Analogous Organs in Plants2025
- Brain Capacity of Hominids2019
- Convergent Evolution: Marsupials vs. Placentals2026
- Definition of Saltation2018
- Embryological Support2026
- Evolution by Anthropogenic Action2020
- Examples of Stabilizing Selection2019
- Factors Disturbing Hardy-Weinberg Equilibrium2024
- Founder Effect in Adaptive Radiation2021
- Geological Eras and Life Forms2024
- Homology in Forelimb Bones2018
- Homology vs Analogy: Flipper Trap2020
- Hugo de Vries' Mutation Theory2019
- Miller's Experiment2020
- Origin and Spread of Homo sapiens2026
- Sequence of Human Evolution2024
- Types of Selection Curves2026
- Von Baer's Refutation of Biogenetic Law2020
Excretory Products and their Elimination14
- Cortical vs Juxtamedullary Nephrons2×
- Descending Limb Permeability2×
- ADH/Vasopressin Mechanism2023
- Aldosterone Target Sites2020
- Ammonotelism, Ureotelism and Uricotelism2022
- ANF Opposition to RAAS2017
- Ascending Limb Permeability2017
- Diabetes Mellitus Urine Indicators2020
- Excretory Structures of Invertebrates2023
- Glycosuria Definition2018
- Loop of Henle Role2019
- Malpighian Body Components2018
- pH Maintenance by the PCT2025
- Vitamin D Activation Failure2019
Human Health and Disease16
- Diseases and Their Pathogens6×
- Autoimmune Disorders3×
- Colostrum and IgA3×
- Opioids3×
- Primary and Secondary Lymphoid Organs3×
- Cell-mediated Immunity and Graft Rejection2×
- Drugs: Sources and Effects2×
- Innate versus Acquired Immunity2×
- Plasmodium Life Cycle2×
- Active and Passive Immunity2020
- Antibody Structure2025
- Cancer Detection and Treatment2025
- Helminth Diseases2018
- HIV and AIDS2023
- Mucosa-associated Lymphoid Tissue2017
- Neoplastic Cells2025
Human Reproduction28
- Male Accessory Ducts2×
- Role of hCG in Pregnancy2×
- Spermatozoon Structure2×
- Spermiation Process2×
- Zona Pellucida Formation2×
- Bulbourethral Gland Function2020
- Corpus Luteum Formation2017
- Ejaculatory Duct Formation2023
- Embryonic Initiation of Oogenesis2025
- Endometrium Implantation Site2023
- Estrogen Positive Feedback2020
- Estrous vs. Menstrual Cycle2023
- Fallopian Tube Anatomy2024
- Fertilisation and Capacitation2017
- Fetal Oogonia Formation2022
- Foetal Development Milestones2025
- Germ Layers and Extra-embryonic Membranes2018
- Hormonal Regulation of Spermatogenesis2024
- Hormones of Pregnancy2021
- Hymen Characteristics2024
- Menarche Definition and Onset2025
- Monozygotic and Dizygotic Twins2025
- Ovarian vs. Uterine Cycle Terminology2018
- Ovulatory LH Surge2026
- Parturition2021
- Spermatogenesis Stages2022
- Trigger for Meiosis II Completion2020
- Trigger for Second Polar Body Extrusion2019
Locomotion and Movement14
- Muscular Disorders3×
- Fibrous Joints2×
- Ribs and Sternum2×
- Vertebral Column2×
- Acetylcholine in Muscle Contraction2026
- Bones of the Limbs2026
- Cartilaginous Joints2023
- Fascia and Fascicles2023
- Fibrocartilage in Intervertebral Discs2022
- Hinge and Pivot Joints2017
- Osteoporosis and Gout2022
- Pectoral and Pelvic Girdles2020
- Role of Calcium Ions2018
- Specific Band Changes During Contraction2021
Microbes in Human Welfare7
Mineral Nutrition9
Molecular Basis of Inheritance47
- lac z, y and a Gene Products3×
- RNA Polymerase III Function3×
- DNA Length Calculation2×
- Euchromatin vs Heterochromatin2×
- Frameshift Mutations and the Reading Frame2×
- Hershey-Chase Experiment2×
- Histone Amino Acid Composition2×
- Inducer and Repressor Control2×
- Initiation/Elong/Term2×
- Properties of Genetic Code2×
- Ribosome Structure and Role2×
- Semi-conservative Model2×
- 23S rRNA as a Ribozyme2018
- Central Dogma2021
- Chargaff's Rules2021
- Deducing Coding Strand Sequence2023
- Definition of Expressed Sequence Tags2023
- Deriving mRNA from Coding Strand2018
- DNA Fingerprinting and VNTRs2021
- DNA Polymorphism2022
- ESTs vs Sequence Annotation2019
- First Step of Aminoacylation: AA Activation2020
- George Gamow's Triplet Code Proposition2025
- H1 Linker Histone2017
- Hydrogen Bond Count2020
- Jacob and Monod's Operon Concept2018
- Leading/Lagging Strands2017
- Local Unwinding by RNA Polymerase2020
- Meselson-Stahl Generation Calculations2022
- Nucleosome Structure2023
- Polymerase Directionality2024
- Polysomes / Polyribosomes2018
- Post-Transcriptional Mods2025
- Predicting mRNA from Template Strand2024
- Purines vs Pyrimidines2019
- Relative Abundance of RNA Types2017
- Rho Factor Function2025
- RNA Mutation Rate2023
- RNA Polymerase II Function2026
- RNA World Structural Evidence2025
- Salient Features of HGP2025
- Sequence Annotation Definition2022
- Spliceosome Mechanism2017
- Structure of the lac Operon2018
- Transcription Unit Parts2024
- Translation Initiation Complex Formation2022
- tRNA as Adapter Molecule2025
Morphology of Flowering Plants23
- Placentation Patterns2×
- Respiratory Roots (Pneumatophores)2×
- Stamen Cohesion Types2×
- Stem Thorns in Citrus and Bougainvillea2×
- Zygomorphic Flower Examples2×
- Actinomorphic Flower Examples2024
- Adhesion of Stamens2026
- Aleurone Layer of Cereal Grains2025
- Axile Placentation Examples2023
- Cohesion of Stamens2024
- Epigynous Flower Examples2020
- Exclusive Zone of Absorption2017
- Fibrous Root Origin in Monocots2020
- Floral Formula Symbols2021
- Floral Symmetry Types2025
- Flower as a Modified Shoot2023
- Fruit Types2017
- Marginal Placentation Example2024
- Ovary Position and Whorls2024
- Perigynous Flower Examples2020
- Root Modifications for Storage2018
- Types of Phyllotaxy2026
- Vexillary Aestivation Examples2022
Neural Control and Coordination12
- Hypothalamus and Limbic System3×
- Midbrain, Hindbrain and Brain Stem2×
- Avascular Nature of the Cornea2019
- Central Neural System and Meninges2026
- Electrical and Chemical Synapses2022
- Lens Suspensory Ligaments2018
- Myelin Sheath Formation2017
- Neuron Structure and Nissl Bodies2018
- Neurotransmitter Receptors2017
- Organ of Corti2020
- Rhodopsin and Vitamin A Link2017
- Visual Acuity at the Fovea2023
Organisms and Populations27
- Competition Concept (-/-)2×
- Per Capita Birth/Death Rates2×
- Predation Concept (+/-)2×
- Verhulst-Pearl Logistic Growth Equation2×
- Age Pyramid Interpretation2023
- Amensalism Concept (-/0)2021
- Amensalism: Antibiosis Example2018
- Breeding Frequency Strategies2018
- Brood Parasitism2023
- Carrying Capacity (K)2024
- Co-extinction in Obligate Mutualism2018
- Commensalism Concept (+/0)2025
- Competitive Exclusion in Galapagos2026
- Exponential Growth Equation2021
- Fig and Wasp Co-evolution2025
- Gause's Principle Limiting Condition2024
- Habitat and Niche2018
- Individual vs. Population Attributes2020
- Interaction Matrix Decoding2023
- J-shaped vs S-shaped Growth Curves2026
- Mutualism Concept (+/+)2017
- Natality (B) Definition2018
- Physiological, Behavioural and Biochemical Adaptations2021
- Pioneers of Ecology2025
- Plant Secondary Metabolites as Defenses2020
- Resource Partitioning2021
- Triangular Age Pyramid2018
Photosynthesis in Higher Plants21
- C3 Reduction and Regen2×
- Chemiosmotic Hypothesis2×
- Calvin Cycle Turns per Glucose2026
- Early Experiments on Photosynthesis2026
- Energy Cost for 1 Glucose in C32023
- First Products of Photorespiration2020
- First Stable Product of C4 Cycle2021
- Kranz Anatomy2022
- Light Saturation Points C3 vs C42017
- PEP Carboxylase Role2022
- Phosphoglycolate Formation2026
- Photorespiration (C2)2024
- Photosynthetic Pigments2025
- Plastoquinone (PQ) Function2020
- Primary CO2 Acceptors Comparison2017
- PS I and PS II Differences2026
- RuBisCO Carboxylation2025
- Specific Absorption Peaks of Chlorophyll a2023
- Stoichiometry of Non-cyclic Output2018
- Thylakoid vs Stroma Lamellae Distribution2021
- Wasteful Nature of Photorespiration2026
Plant Growth and Development18
- Dedifferentiation and Redifferentiation3×
- 2,4-D as a Dicot Herbicide2×
- Gibberellins in Sugarcane Production2×
- Site of Photoperiodic Perception2×
- ABA and GA Antagonism2020
- Arithmetic and Geometric Growth2026
- Auxin-Induced Parthenocarpy2025
- Auxin's Dual Role in Abscission2017
- Auxins in Pineapple Flowering2019
- Cytokinins and Senescence2025
- Ethylene and Cucumber Feminization2022
- Ethylene in Deep Water Rice2023
- Ethylene in Root Growth and Root Hairs2022
- Gibberellins and Bolting2026
- Gibberellins in Juvenile Conifers2023
- Plasticity and Heterophylly2022
- Sigmoid Growth Curve2020
- Synthetic Auxins and Weed Control2021
Plant Kingdom26
- Algal Food Storage2×
- Algin vs Carrageen Sources2×
- Haplontic, Diplontic and Haplodiplontic Life Cycles2×
- Homospory vs Heterospory2×
- Monoecious and Dioecious Plant Groups2×
- Algal Forms and Examples2017
- Bryophyte Life Cycle and Reproduction2025
- Class Sphenopsida2026
- Coralloid Roots and Mycorrhiza2019
- Edible Algae and Space Food2020
- Examples of Mosses2025
- Extended Examples of Heterospory2023
- Floridean Starch Structure2020
- Haplo-Diplontic Life Cycle2025
- Independent Alternation of Generations2022
- Liverwort Structure and Gemmae2021
- Morphology of Gemmae2025
- Naked Ovules and Seeds2025
- Origin of the Moss Protonema2023
- Phaeophyceae Structure2024
- Position of Strobili in Equisetum2020
- Red Algae Gamete Motility2018
- Retention of Female Gametophyte2019
- Retention of Gametophytes2026
- Wind Pollination and Pollen Tube2023
- Winged Pollen of Pinus2018
Principles of Inheritance and Variation31
- Down, Klinefelter and Turner Syndromes4×
- ABO Blood Group Inheritance3×
- ABO Blood Group System2×
- Mendel's Seven Contrasting Traits2×
- Mendelian Disorders and Their Loci2×
- Monohybrid Punnett Square2×
- Sturtevant's Genetic Mapping2×
- X-linked Recessive Inheritance2×
- XO, XY and ZW Sex Determination2×
- Aneuploidy and Non-disjunction2017
- Autosomal Dominant Disorders2022
- Back Cross vs Test Cross2024
- Centimorgan Definition2019
- Examples of Incomplete Dominance2024
- Exception to Independent Assortment2022
- F2 Phenotypic Ratio 9:3:3:12025
- Genetic Mapping Units2022
- Incomplete Dominance2019
- Inventor of the Punnett Square2018
- Law of Dominance Postulates2024
- Mendel's Experiment Timeline2017
- Mendel's Seven Contrasting Traits2026
- Morgan's Experiments2020
- Pedigree Carrier Probability2025
- Pedigree Symbols2023
- Pleiotropy2023
- Polygenic Inheritance2025
- Starch Grain Size Exception2018
- Test Cross Application2024
- Thalassaemia versus Sickle-cell Anaemia2017
- True-Breeding Lines2020
Reproductive Health17
- IUD Classifications3×
- Barrier Contraceptives2×
- Curability of STIs2×
- Sexually Transmitted Infections2×
- Artificial Insemination2017
- Copper IUD Mechanism2017
- ICSI Technique2026
- Lactational Amenorrhea Mechanism and Limits2019
- Limitations of ART and Adoption2025
- Natural Contraceptive Methods2024
- Pathogens of STIs2017
- Progestasert Hormonal IUD2019
- Reproductive and Child Health Care2023
- Saheli Estrogen Receptor Modulation2018
- Surgical Sterilization2023
- Transmission of STIs2021
- ZIFT vs IUT2020
Respiration in Plants13
- GTP/ATP Synthesis2×
- Net Yield of Glycolysis2×
- ATP Investment Phase2023
- Glycolysis Site and Substrate2024
- Hexokinase and First Phosphorylation2019
- Matrix Location of TCA Enzymes2018
- Metabolic Fates of Pyruvate2022
- NAD+ as the Oxidizing Agent2018
- NADH to ATP Equivalence2021
- Oxidative Decarboxylation Sites2023
- Respiratory Quotient2019
- Substrate-Level vs Oxidative Phosphorylation2020
- Succinate Dehydrogenase Location2025
Sexual Reproduction in Flowering Plants31
- Abiotic Pollination2×
- Anemophily Floral Adaptations2×
- Double Fertilization Concept2×
- Ploidy Level Calculation2×
- Post-Fertilization Changes2×
- Structure of the Mature Embryo Sac2×
- Biotic Pollination2017
- Cleistogamous vs. Chasmogamous Flowers2022
- Development of the Embryo Sac2025
- Dioecious Plants: Papaya and Date Palm2017
- Discharge of Male Gametes2019
- Embryo Growth and Non-Albuminous Seeds2026
- Exceptions in Aquatic Plant Pollination2020
- Extended Pollen Viability Families2021
- Floral Traits of Entomophily2023
- Gametophyte and Sporophyte in Angiosperms2020
- Grass Embryo Diagram Labeling2024
- Hydrophily Mechanisms and Traps2024
- Inflorescence Adaptation in Wind Pollination2024
- Megasporogenesis and Functional Megaspore2017
- Microsporangium Wall and Tapetum2025
- Monocot Embryo Structure2025
- Parthenogenetic vs Adventive Embryo2019
- Pollen Cryopreservation2018
- Pollen Wall and Sporopollenin2018
- Role of Filiform Apparatus2026
- Seed Structure and Perisperm2019
- Structure of the Anther2026
- Structure of the Ovule2020
- True and False Fruits2022
- Types of Pollination2021
Strategies for Enhancement in Food Production9
Structural Organisation in Animals23
- Ciliated Epithelium Location and Function3×
- Digestive Tract Anatomy2×
- Sexual Dimorphism: Anal Styles vs. Cerci2×
- Accessory Excretory Organs2023
- Anal Cerci Segment Origin2024
- Brush Border Epithelium2020
- Cell Junction Functions2021
- Copulatory Pad Location2025
- Cranial Nerves Count2026
- Dense Connective Tissue2023
- Goblet Cell Cellular Origin2020
- Hepatic Caecae Location and Function2021
- Mechanism of Cutaneous Respiration2026
- Modes of Respiration2025
- Muscle Tissue Classification2024
- Nervous System Distribution and Survival2020
- Neuroglia Proportion and Function2022
- Renal Portal System Definition2025
- Sinus Venosus2025
- Smooth Muscle Morphology2021
- Sperm Pathway Post-Bidder's Canal2017
- Tegmina vs. Hindwings2022
- Unicellular vs. Multicellular Glands2024
The Living World8
Transport in Plants11
- Cohesion and Adhesion2×
- Stomatal Opening Mechanism2×
- Active Transport across Membranes2023
- Apoplast and Symplast Pathways2022
- Girdling Experiment2022
- Guttation vs Transpiration2020
- Phloem Translocation by Pressure Flow2019
- Solute Potential Effect2022
- Standard Conditions for Pure Water2017
- Transpirational Cooling2023
- Uptake and Translocation of Mineral Ions2019
Method
How to read this
What is an idea?
The single fact, law or skill a question tests, one level below the topic. For example, a topic like Chemical Kinetics holds ideas such as the first-order integrated rate law.
Does a repeated idea mean a repeated question?
No. The idea comes back, usually in a new form: a match-the-lists one year, a two-statement question the next. Learn the idea, not the old question.
Why is the chance for each idea so low?
Because NEET draws from a very large pool. Even the most repeated ideas came back in only about half the papers. Topics are far more predictable than ideas.