Laws of Motion
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)
JEE Main & Advanced Self Study
Concept-first chapter notes and 30-question chapter tests for JEE Main and JEE Advanced Physics, Chemistry and Mathematics.
Physics
Work, Energy and Power
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)
Current Electricity
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)
Ray Optics and Optical Instruments
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)
Electrostatics
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)
Chemistry
Some Basic Concepts of Chemistry
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)
Chemical Bonding and Molecular Structure
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)
Thermodynamics and Thermochemistry
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)
Chemical Kinetics
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)
Mathematics
Quadratic Equations
Roots, discriminant, relations between roots and coefficients, common roots, sign of a quadratic and location of roots — a high-frequency JEE Main topic.
13 min read · Weightage 3–4% (1–2 questions in JEE Main every session)
Limits, Continuity and Differentiability
Standard limits, indeterminate forms, L'Hôpital's rule, expansions, continuity tests and differentiability of piecewise and modulus functions — the entry gate to all of calculus in JEE.
15 min read · Weightage 6–8% (2–3 questions in JEE Main, frequent in Advanced)
Vectors and Three Dimensional Geometry
Vector algebra, dot and cross products, scalar and vector triple products, direction cosines, lines and planes in space, shortest distance and angles — a highly scoring chapter where a clean vector method replaces long coordinate computation.
18 min read · Weightage 8–10% (3–4 questions across JEE Main sessions)
Sequences and Series
Arithmetic, geometric, harmonic and arithmetico-geometric progressions, means and inequalities, special summations and telescoping techniques — the chapter that quietly powers half of the algebra you will meet later.
17 min read · Weightage 5–6% (2–3 questions in JEE Main, guaranteed in BITSAT)