NCERT-anchored chapter notes and 30-question chapter tests for NEET-UG Physics, Chemistry and Biology.
Select your class / paper and subject to see only the notes and chapter tests you need.
Filters: all class / papers, all subjects. 50 chapters shown
SI units, dimensional analysis, error propagation and the precision of vernier/screw-gauge instruments form a short but scoring entrance-exam topic. Dimensional checks let you eliminate wrong options in seconds without solving the full problem.
10 min read · Weightage 2–3 of 40 Physics questions
Kinematics builds the language of motion — position, velocity, acceleration and their graphical relationships — used throughout mechanics. Entrance papers frequently test graph-reading and relative-velocity problems involving projectiles, rivers and boats.
13 min read · Weightage 3–4 of 40 Physics questions
Newton's three laws, free-body diagrams, friction, circular motion dynamics and pseudo forces — the backbone of all mechanics problem solving.
14 min read · Weightage 4–5% (2–3 questions in NEET, 1–2 in JEE Main)
Work done by constant and variable forces, work-energy theorem, conservative forces, potential energy curves, collisions and power — the fastest route to solving mechanics problems without kinematics.
13 min read · Weightage 4–5% (2–3 questions in NEET, 1–2 in JEE Main)
Rotational motion extends Newton's laws and energy methods to rigid bodies using moment of inertia, torque and angular momentum. Entrance papers reward memorised moments of inertia and quick application of the parallel/perpendicular axis theorems and rolling conditions.
14 min read · Weightage 3–4 of 40 Physics questions
Newton's law of gravitation, Kepler's laws, gravitational field/potential energy, and escape/orbital velocity for satellites — a high-yield mechanics chapter.
13 min read · Weightage 1 question typically in board exams; important for JEE/NEET overlap
Elasticity, surface tension, viscosity and fluid statics/dynamics link microscopic intermolecular forces to macroscopic mechanical behaviour. IAT tests stress-strain curve reading, Bernoulli applications and terminal-velocity numericals with equal weight.
16 min read · Weightage 6–8% of IAT Physics
Kinetic theory of gases, thermodynamic processes and heat engines connect molecular motion to macroscopic work and heat. IAT frequently combines PV-diagram interpretation with first-law and efficiency calculations in a single multi-step question.
16 min read · Weightage 6–8% of IAT Physics
Molecular model of an ideal gas, pressure derivation, degrees of freedom, specific heats and mean free path — linking microscopic motion to macroscopic gas laws.
12 min read · Weightage 1 question typically in board exams; frequent numerical topic
Simple harmonic motion links periodic mechanical systems (springs, pendulums) through a single differential equation, while wave motion covers propagation, superposition, beats and the Doppler effect. Entrance papers repeatedly test SHM energy partition and standard wave-formula plug-ins.
14 min read · Weightage 3–4 of 40 Physics questions
Mole concept, stoichiometry, limiting reagent, concentration terms and empirical/molecular formulae — the calculation base of all physical chemistry.
12 min read · Weightage 3–4% (1–2 questions every year in both NEET and JEE Main)
Quantum numbers, orbital shapes, electronic configuration rules and their exceptions form the backbone of every periodicity and bonding question in entrance papers. Mastering Bohr's model, de Broglie wavelength and the Aufbau/Hund/Pauli framework lets you answer configuration and spectral questions in seconds.
11 min read · Weightage 3–4 questions in entrance papers Chemistry
The modern periodic law, block-wise classification of elements, and periodic trends in atomic size, ionisation enthalpy, electron gain enthalpy and electronegativity, including key exceptions.
13 min read · Weightage 4-6 marks in CBSE boards; frequent NCERT-based questions
Ionic and covalent bonding, VSEPR geometry, hybridisation, molecular orbital theory, bond parameters, dipole moment and hydrogen bonding — the most frequently examined inorganic-physical crossover chapter.
16 min read · Weightage 6–8% (3–4 questions in NEET, 2–3 in JEE Main)
System and surroundings, internal energy and enthalpy, the first law, heat capacities, Hess's law, bond enthalpies, entropy, Gibbs energy and spontaneity — the chapter that connects physical chemistry to equilibrium and electrochemistry.
17 min read · Weightage 5–7% (2–3 questions in NEET, 2 in JEE Main)
Equilibrium constants Kp and Kc, Le Chatelier's principle, acids and bases, pH and buffers, salt hydrolysis and solubility product — one of the highest-scoring chapters in Physical Chemistry.
18 min read · Weightage 6–7% (2–3 questions in NEET, 2–3 in JEE Main)
Oxidation numbers, identification of oxidising and reducing agents, balancing by oxidation-number and ion-electron methods, disproportionation and redox titrations.
11 min read · Weightage 2–3% (1 question in NEET, 1 in JEE Main)
This chapter builds the electronic-effect and mechanism toolkit — inductive, resonance, hyperconjugation and their impact on stability and reactivity — that underlies every later organic chapter. IUPAC nomenclature and the classification of reaction intermediates (carbocations, carbanions, free radicals) are core recurring exam themes.
12 min read · Weightage 3–4 questions in entrance papers Chemistry
Alkanes, alkenes, alkynes, arenes and alkyl/aryl halides are tested through characteristic reaction mechanisms — Markovnikov/anti-Markovnikov addition, free-radical substitution, electrophilic aromatic substitution and SN1/SN2/E1/E2 pathways. Recognising which mechanism applies from substrate, reagent and conditions is the key exam skill in this chapter.
13 min read · Weightage 4–5 questions in entrance papers Chemistry
Systematic qualitative analysis of inorganic salts (cation and anion detection) and quantitative volumetric titration techniques, both central to the CBSE Class 12 chemistry practical examination.
13 min read · Weightage Practical exam: 30 marks (salt analysis + volumetric titration are core components)
Biological classification systematises the enormous diversity of life using nomenclature rules, hierarchical taxonomic categories, and the five kingdom system, extending to viruses, viroids and lichens. IAT questions probe precise classification criteria and characteristic features of each group rather than memorised lists alone.
14 min read · Weightage 4–6 questions in IAT Biology
This chapter covers plant and animal tissue systems, morphology of flowering plants, and the anatomy of a representative animal (frog/cockroach type questions). IAT focuses on precise tissue identification, floral formula interpretation, and structural-functional correlation.
15 min read · Weightage 4–6 questions in IAT Biology
Cell theory, prokaryotic vs eukaryotic organisation, and the structure–function map of every cell organelle — a guaranteed NEET scoring chapter.
15 min read · Weightage 5–6% (3–4 questions in NEET every year)
Interphase checkpoints, mitosis phase by phase, the two divisions of meiosis and the significance of each — a short, factual chapter that NEET mines every single year for one or two direct questions.
15 min read · Weightage 3–4% (1–2 questions in NEET almost every year)
Plant physiology covers transport of water and nutrients, photosynthesis, respiration, plant hormones and photoperiodism/vernalisation. IAT expects quantitative and mechanistic understanding — light and dark reactions, C3/C4 comparison, hormone actions, and water potential concepts.
16 min read · Weightage 5–7 questions in IAT Biology
Pigments and the absorption spectrum, the light reaction and photophosphorylation, the Calvin cycle, C4 anatomy and photorespiration — a factual chapter NEET rewards for exact numbers and names.
16 min read · Weightage 4–5% (2 questions in NEET most years)
Human physiology integrates digestion, breathing, circulation, excretion and neuro-endocrine control into one coordinated system. IAT tests precise mechanisms — enzyme sites, pressure-volume changes in the cardiac cycle, nephron transport, and hormone feedback loops — rather than rote listing.
16 min read · Weightage 6–8 questions in IAT Biology
Composition of blood and lymph, blood groups and coagulation, human heart structure, the cardiac cycle, ECG, double circulation and circulatory disorders — a pure NCERT-recall chapter that reliably contributes 2–3 NEET questions.
16 min read · Weightage 3–4% (2–3 questions in NEET)
Coulomb's law, electric field and potential, dipoles, Gauss's law with symmetry, conductors, capacitance and dielectrics — a chapter where choosing the right symmetry converts a page of integration into a one-line answer.
20 min read · Weightage 8–9% (3–4 questions in NEET, 2–3 in JEE Main)
Ohm's law, drift velocity, resistivity, series-parallel networks, Kirchhoff's rules, Wheatstone bridge, potentiometer and cell combinations — the highest-yield electricity chapter for both exams.
15 min read · Weightage 6–7% (3–4 questions in NEET, 2–3 in JEE Main)
Magnetic force on charges and currents, Biot–Savart and Ampere's law, fields of loops and solenoids, the cyclotron and moving-coil galvanometer — a formula-dense chapter that returns 2–3 questions every year.
16 min read · Weightage 5–6% (2–3 questions in NEET, 2 in JEE Main)
Electromagnetic induction, alternating current circuits and Maxwell's unification into electromagnetic waves form a tightly connected block. IAT problems commonly chain a motional-emf or mutual-inductance setup into an LCR resonance or power calculation.
17 min read · Weightage 7–9% of IAT Physics
Reflection at plane and spherical mirrors, refraction, total internal reflection, prisms, thin lenses, lens combinations and the optical instruments built from them — a high-scoring, formula-driven chapter where sign convention decides your marks.
18 min read · Weightage 5–6% (3–4 questions in NEET, 1–2 in JEE Main)
Huygens' principle, Young's double slit interference, thin-film colours, single-slit diffraction, resolving power and polarisation — the wave picture of light with all standard numericals.
13 min read · Weightage 3–4% (1–2 questions in NEET, 1–2 in JEE Main)
Modern physics covers the photoelectric effect, matter waves, Bohr's atomic model and nuclear physics — topics built almost entirely on direct formula application. Questions here are quick, formula-based scorers if the standard relations are memorised precisely.
14 min read · Weightage 4–5 of 40 Physics questions
Energy bands, intrinsic and extrinsic semiconductors, p-n junction and diode characteristics, rectifiers, Zener regulation, transistor action and logic gates.
12 min read · Weightage 3–4% (1–2 questions in NEET, 1 in JEE Main)
Colligative properties link solute amount to measurable changes in vapour pressure, boiling point, freezing point and osmotic pressure, while surface chemistry covers adsorption, colloids and catalysis. IAT tests both quantitative colligative calculations (with van't Hoff factor corrections) and conceptual surface-chemistry classification.
13 min read · Weightage 6–8 questions in IAT Chemistry
Electrochemistry links chemical change to electrical energy through galvanic and electrolytic cells, EMF, the Nernst equation and Faraday's laws. Entrance papers frequently test cell notation, standard electrode potentials, conductance and quantitative electrolysis calculations.
11 min read · Weightage 3–4 questions in entrance papers Chemistry
Rate of reaction, rate laws and order, integrated rate equations, half-life, the Arrhenius equation, collision theory and catalysis — a compact, highly formula-driven chapter that reliably delivers full marks with practice.
16 min read · Weightage 4–5% (2 questions in NEET, 1–2 in JEE Main, 7 marks in CBSE XII)
Groups 13–18 show sharp anomalies driven by the inert pair effect, back bonding and catenation trends, tested heavily through oxoacids, boranes, silicates and interhalogen structures. Entrance papers focus on structure–bonding correlations and characteristic reactions of these elements and their compounds.
13 min read · Weightage 4–5 questions in entrance papers Chemistry
Transition-metal trends, variable oxidation states, colour and magnetism, lanthanoid contraction, actinoid chemistry and the reactions of KMnO₄ and K₂Cr₂O₇.
12 min read · Weightage 3–4% (1–2 questions in NEET, 1 in JEE Main)
Coordination compounds feature a central metal bonded to ligands via coordinate bonds, exhibiting rich structural (isomerism), electronic (colour, magnetism) and bonding (VBT, CFT) behaviour. IAT tests IUPAC nomenclature, isomerism classification, crystal field splitting and magnetic/spectral predictions.
14 min read · Weightage 6–8 questions in IAT Chemistry
Alcohols, phenols, ethers, aldehydes, ketones, carboxylic acids and amines each show characteristic reactivity governed by their functional group. IAT emphasises named reactions, acidity/basicity ordering, mechanism-based product prediction and distinguishing chemical tests.
14 min read · Weightage 6–8 questions in IAT Chemistry
Biomolecules (carbohydrates, proteins, nucleic acids, vitamins, hormones) sustain life processes, polymers are giant molecules built from repeating monomer units used across industries, and environmental chemistry studies pollution of air, water and soil along with green chemistry principles. IAT tests structural classification, biochemical reactions, polymer types/uses and pollution mechanisms.
14 min read · Weightage 6–8 questions in IAT Chemistry
Reproduction spans sexual reproduction in flowering plants (pollination, fertilisation, seed/fruit development), and human reproduction including gametogenesis, menstrual cycle, fertilisation, and reproductive health. IAT tests precise sequences and structural details over rote memorisation.
16 min read · Weightage 5–7 questions in IAT Biology
Mendelian genetics, deviations from Mendelism, chromosomal theory, linkage, sex determination, pedigree analysis and genetic disorders — consistently one of the top-scoring NEET Genetics chapters.
16 min read · Weightage 7–8% (4–5 questions every year in NEET)
From Mendel's laws through molecular inheritance to the mechanisms of evolution, this chapter connects pattern (crosses, pedigrees), mechanism (DNA replication, transcription, translation, mutation) and process (natural selection, speciation, Hardy-Weinberg) — a core IAT scoring area.
16 min read · Weightage 6–8 questions in IAT Biology
This chapter covers human health and disease (pathogens, immunity, cancer, drug/alcohol abuse), improvement in food production (plant breeding, animal husbandry, dairy/poultry, single cell protein, biofortification) and microbes in human welfare (fermentation, biogas, biocontrol, biofertilisers). IAT tests applied and mechanistic knowledge of these topics.
15 min read · Weightage 4–6 questions in IAT Biology
Biotechnology covers the principles and processes of recombinant DNA technology, and its applications in agriculture, medicine and industry, including transgenic organisms, gene therapy, and ethical/biosafety issues. IAT expects precise understanding of molecular tools (restriction enzymes, vectors, PCR, gel electrophoresis) and applied case studies (Bt cotton, golden rice, insulin production, gene therapy).
16 min read · Weightage 5–7 questions in IAT Biology
Ecology examines organisms in relation to environment across scales — population growth, community interactions, ecosystem energy flow and nutrient cycling — culminating in biodiversity patterns, conservation strategies and human impacts like pollution and global warming.
15 min read · Weightage 5–7 questions in IAT Biology
Admissions open
NEET-UG free notes and chapter tests is part of the NEET-UG syllabus plan. Pick the batch by the year you appear in — Class 11 students join the two-year NEET 2028 program, Class 12 students and repeaters join the one-year or crash program for NEET 2027.
