Chapter-wise, subject-wise guide for NEET Biology, Chemistry, and Physics : Weightage-wise (Approx.)
Class 11 Biology
| Unit | Weightage |
| Diversity in Living World | 12% |
| Structural Organisation in Plants & Animals | 9% |
| Cell Structure & Function | 10% |
| Plant Physiology | 13% |
| Human Physiology | 20% |
Class 12 Biology
NEET BIOLOGY – Most Repeated Questions, Weightage & Important Topics
Biology carries 50% of total NEET marks (360/720), so repeated topics matter the most.
Biology Chapter
| Reproduction | 14% | |
| Genetics & Evolution | 18% | |
| Biology in Human Welfare | 9% | |
| Biotechnology | 10% | |
| Ecology | 12% | |
🌿 Most Repeated Biology Topics
1. Human Physiology (MOST repeated)
- Digestive system enzymes
- Respiratory volumes
- Cardiac cycle & ECG
- Nephron function
- Hormones and their actions
2. Genetics & Evolution
- Mendelian ratios
- Test cross & dihybrid cross
- Sex-linked inheritance
- DNA replication, transcription, translation
- Hardy–Weinberg principle
3. Reproduction
- Gametogenesis
- Menstrual cycle
- Fertilization
- Seed formation
- Reproductive health – contraceptives
4. Ecology
- Population interactions
- Food chain & energy flow (10% law)
- Biogeochemical cycles
- Biodiversity hotspots
5. Biotechnology
- rDNA tools (ligase, restriction enzymes)
- PCR steps
- Gel electrophoresis
- Bioreactors
🔥 NEET CHEMISTRY – Most Repeated Questions, Weightage & Important Topics
NEET Chemistry is divided into Physical, Organic, and Inorganic Chemistry.
✅ Chemistry Chapter-Wise Weightage (Approx.)
Physical Chemistry
| Chapter | Weightage |
| Mole Concept | 4–5% |
| Atomic Structure | 2% |
| Thermodynamics | 3% |
| Equilibrium | 4–5% |
| Electrochemistry | 2–3% |
| Solutions & Colligative properties | 3% |
Organic Chemistry
| Chapter | Weightage |
| GOC | 4% |
| Hydrocarbons | 4% |
| Alcohols, Phenols, Ethers | 3% |
| Aldehydes, Ketones | 3% |
| Amines | 3% |
| Biomolecules | 3% |
Inorganic Chemistry
| Chapter | Weightage |
| Periodic Table | 3% |
| Chemical Bonding | 5–6% |
| Coordination Compounds | 4% |
| p-block elements | 3–4% |
| d- & f-block | 2–3% |
| Metallurgy | 2% |
🎯 Most Repeated Chemistry Topics
Physical Chemistry
- Limiting reagent, concentration terms
- Quantum numbers
- First law of thermodynamics & enthalpy
- pH & buffer numericals
- Kp, Kc calculations
- Raoult’s law & relative lowering of vapour pressure
Organic Chemistry
- Inductive, mesomeric & hyperconjugation effects
- Reaction intermediates (carbocations, free radicals)
- SN1, SN2, E1, E2
- Aldol, Cannizzaro, HVZ reaction
- Nomenclature & isomerism
- Amines – basicity & reactions
Inorganic Chemistry
- VSEPR theory predictions
- Periodic trends
- Ligands, oxidation number, crystal field splitting
- p-block — oxides, acids, halides
- Coordination compounds – IUPAC naming, isomerism
⚡ NEET PHYSICS – Most Repeated Questions, Weightage & Important Topics
Physics decides rank because it’s calculation-heavy
✅ Physics Chapter-Wise Weightage (Approx.)
Class 11 Physics
| Chapter | Weightage |
| Units & Measurements | 2% |
| Kinematics | 3–4% |
| Laws of Motion | 3% |
| Work, Energy, Power | 4% |
| Rotational Motion | 5% |
| Gravitation | 2% |
| Thermodynamics | 4–5% |
| SHM & Waves | 4% |
Class 12 Physics
| Chapter | Weightage |
| Electrostatics | 4% |
| Current Electricity | 4% |
| Magnetism | 5% |
| EM Induction | 3% |
| Optics | 6–7% |
| Modern Physics | 8–10% |
| Semiconductor | 5% |
⚙ Most Repeated Physics Topics
Mechanics
- Motion in 1D & 2D
- Free body diagrams
- Circular motion
- Moment of inertia formulas
- Work–energy theorem
Electrodynamics
- Coulomb law & electric field
- Capacitors and series/parallel formulas
- Ohm’s law, Kirchhoff rules
- Magnetic force on charge
- Faraday law
Optics
- Lens formula
- Magnification
- Young’s double-slit experiment
Modern Physics (VERY high yielding)
- Photoelectric effect
- Atomic models (Bohr)
- Radioactivity equations
- Semiconductor diode characteristics
⭐ SHORTLIST: The Most Repeated Chapters (Absolute Must-Do)
Biology
- Human Physiology
- Genetics
- Ecology
- Reproduction
- Biotechnology
Chemistry
- Mole Concept
- Chemical Bonding
- GOC + Reaction Mechanisms
- Coordination Compounds
- Electrochemistry
Physics
- Mechanics (esp. Rotational Motion)
- Electrostatics
- Current Electricity
- Optics
- Modern Physics
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