PYQ-Based Selection
NEET Important Topics 2026
High-yield chapters and key concepts for Biology, Chemistry and Physics — selected based on 10 years of NEET PYQ analysis. Focus here first to maximise your score.
Do-or-Die ☠️High PriorityMedium· ~Q = average questions in NEET paper
🧬
Biology
90 Q · 360 marks
Molecular Basis of Inheritance
Do-or-Die ☠️~5–6 Q
Key Concepts
- › DNA replication (enzymes + steps)
- › Transcription vs Translation
- › Lac operon & gene regulation
- › Human Genome Project
- › DNA fingerprinting
💡 Tip: Draw the replication fork and lac operon diagram from memory. NCERT diagrams appear directly as MCQs.
Principles of Inheritance & Variation
Do-or-Die ☠️~4–5 Q
Key Concepts
- › Mendel's laws + exceptions
- › Codominance & incomplete dominance
- › Linkage and crossing over
- › Chromosomal disorders (Down's, Turner's)
- › Sex-linked inheritance
💡 Tip: Always draw Punnett squares. Numerical genetics questions (ratio-based) appear every year.
Animal Kingdom
Do-or-Die ☠️~4–5 Q
Key Concepts
- › Phylum characteristics + examples
- › Notochord, coelom, body symmetry
- › Differences: Platyhelminthes vs Aschelminthes
- › Pisces → Mammals class features
💡 Tip: Make a table: Phylum → Distinguishing feature → 2 examples. This is pure memory — very scorable.
Human Physiology — Digestion
High Priority~3 Q
Key Concepts
- › Enzymes at each site + substrates
- › Bile salts vs bile pigments
- › Villi structure and absorption mechanisms
- › GI hormones: secretin, cholecystokinin
💡 Tip: Focus on enzyme names + where they act. Board question style: 'Which enzyme converts X to Y?'
Human Physiology — Circulation
High Priority~3 Q
Key Concepts
- › Cardiac cycle + sounds (lub-dub)
- › ECG waves (P, QRS, T)
- › Blood pressure regulation
- › ABO blood groups + Rh factor
- › Cardiac output calculation
💡 Tip: ECG wave interpretation appears almost every year. Know the full cardiac conduction pathway.
Cell Cycle & Cell Division
High Priority~3 Q
Key Concepts
- › G1, S, G2, M phase events
- › Mitosis: prophase → telophase (events)
- › Meiosis I vs II differences
- › Significance of meiosis in gametogenesis
💡 Tip: Know exact chromosome count at each stage. Diagrams from NCERT appear as 'identify the stage' MCQs.
Biomolecules
High Priority~3 Q
Key Concepts
- › Enzyme kinetics (Michaelis-Menten)
- › Competitive vs non-competitive inhibition
- › Protein structure levels (1°–4°)
- › Nucleotide structure (purine vs pyrimidine)
💡 Tip: Focus on enzyme kinetics graph shapes. Km and Vmax questions appear frequently.
Ecosystem
Medium~2–3 Q
Key Concepts
- › Energy flow + 10% law
- › Ecological pyramids (upright vs inverted)
- › Biogeochemical cycles (N₂, P)
- › Primary productivity: GPP vs NPP
💡 Tip: Aquatic food web pyramid (biomass) is inverted — a very common MCQ trap.
⚗️
Chemistry
45 Q · 180 marks
Chemical Bonding & Molecular Structure
Do-or-Die ☠️~4–5 Q
Key Concepts
- › VSEPR — bond angles of all common molecules
- › sp, sp², sp³ hybridisation
- › Resonance structures (SO₃, CO₃²⁻, ozone)
- › Formal charge calculation
- › MO theory — bond order + magnetic nature
💡 Tip: Know the shapes and bond angles of at least 15 molecules cold. NH₃, H₂O, SF₆, PCl₅ appear every year.
p-Block Elements
Do-or-Die ☠️~3–4 Q
Key Concepts
- › Group 15: allotropes of P, oxyacids of N
- › Group 16: allotropes of S, SO₂ vs SO₃
- › Group 17: interhalogen compounds, oxyacids of Cl
- › Group 18: xenon fluorides
💡 Tip: Make a table of oxyacids with oxidation states. Chlorine oxyacids (HOCl → HClO₄) are a perennial favourite.
Coordination Compounds
Do-or-Die ☠️~3–4 Q
Key Concepts
- › IUPAC naming rules
- › Isomerism: geometric, optical, ionisation
- › Crystal Field Theory + CFSE
- › EAN rule + effective atomic number
💡 Tip: Practice naming 5–10 complex ions daily. Geometric isomers of square planar Pt complexes appear annually.
General Organic Chemistry (GOC)
Do-or-Die ☠️~2–3 Q
Key Concepts
- › Inductive vs resonance effects
- › Stability of carbocations and carbanions
- › Named reactions: Aldol, Cannizzaro, Kolbe
- › Nucleophilic vs electrophilic attack
💡 Tip: Stability order questions (which carbocation is most stable?) appear every year — know hyperconjugation.
Chemical Kinetics
High Priority~2–3 Q
Key Concepts
- › Rate law + order determination
- › Half-life formulas (1st vs 2nd order)
- › Arrhenius equation
- › Activation energy from graph
💡 Tip: 1st order half-life t₁/₂ = 0.693/k is a must-know. Always check units to identify reaction order.
Electrochemistry
High Priority~2 Q
Key Concepts
- › Nernst equation at STP and non-standard
- › Cell EMF calculations
- › Kohlrausch's law
- › Faraday's laws of electrolysis
💡 Tip: Cell EMF = E°cathode − E°anode. Practice sign conventions carefully — a very common source of errors.
⚡
Physics
45 Q · 180 marks
Rotational Motion & Rigid Body
Do-or-Die ☠️~3–4 Q
Key Concepts
- › MOI of common bodies (disc, sphere, rod)
- › Parallel & perpendicular axis theorems
- › Angular momentum conservation
- › Rolling without slipping conditions
- › Torque and angular acceleration
💡 Tip: MOI formulas MUST be memorised — at least 8 standard shapes. Rolling motion KE = ½mv²(1 + I/mr²) appears as numericals.
Thermodynamics
Do-or-Die ☠️~3 Q
Key Concepts
- › 1st law: ΔU = Q − W
- › Isothermal vs adiabatic processes
- › Carnot cycle efficiency = 1 − T₂/T₁
- › Entropy + 2nd law applications
- › Cp − Cv = R
💡 Tip: PV diagrams are very common — identify work done as area under curve. Know the sign convention for Q and W.
Current Electricity
Do-or-Die ☠️~3 Q
Key Concepts
- › Kirchhoff's laws (KCL + KVL)
- › Wheatstone bridge balance condition
- › R in series vs parallel + internal resistance
- › Potentiometer principle
- › Power dissipated = V²/R = I²R
💡 Tip: Practice Wheatstone bridge problems — both balance condition and unbalanced galvanometer deflection variants appear.
Magnetic Effects of Current
High Priority~3 Q
Key Concepts
- › Biot-Savart law vs Ampere's law applications
- › Force on current-carrying conductor
- › Moving coil galvanometer principle
- › Cyclotron frequency
💡 Tip: The right-hand thumb rule for direction is tested every year. Practice using it for multiple geometries.
Semiconductor Electronics
High Priority~3 Q
Key Concepts
- › p-n junction: forward vs reverse bias
- › Zener diode as voltage regulator
- › NPN vs PNP transistor: CE, CB, CC configurations
- › Logic gates: AND, OR, NOT, NAND, NOR, XOR truth tables
💡 Tip: Logic gate truth tables appear every year — know all 6 gates cold. Transistor as switch/amplifier is also common.
Optics
High Priority~2–3 Q
Key Concepts
- › Mirror formula + magnification
- › Lens maker's equation
- › Young's double slit: fringe width formula
- › Diffraction + resolving power
- › Total Internal Reflection + critical angle
💡 Tip: Sign convention is critical. Always define incident ray direction first. YDS fringe width β = λD/d is a direct formula question.
📱
Practice every important topic with 7,000+ NEET MCQs — free
7,000+ MCQs · Full mock tests · Flashcards · Study plan — all free