Following are some important chapters in jee mains -->

Physics

1. Electrostatics: Questions on Coulomb’s Law, electric field, and potential.
2. Current Electricity: Ohm’s law, Kirchhoff's laws, and series-parallel combinations.
3. Optics: Ray optics, particularly lenses and mirrors, and wave optics (Young’s double-slit experiment).
4. Modern Physics: Photoelectric effect, atomic models, nuclear physics, and semiconductors.
5. Thermodynamics: First law, heat engines, and Carnot cycle.
6. Kinematics and Mechanics: Projectile motion, Newton’s laws, and rotational dynamics.

Chemistry

1. Chemical Bonding and Molecular Structure: VSEPR theory, hybridization, molecular orbital theory.
2. Coordination Compounds: Nomenclature, isomerism, and bonding.
3. Thermodynamics: Enthalpy, entropy, Gibbs free energy.
4. Electrochemistry: Nernst equation, electrochemical cells.
5. Organic Chemistry: Reactions involving aldehydes, ketones, carboxylic acids, and alcohols.
6. s, p, d, f-block Elements: Properties and reactions of elements, especially transition elements.

Mathematics

1. Coordinate Geometry: Questions from circles, parabola, ellipse, and hyperbola.
2. Calculus: Limits, continuity, differentiability, integration, and application of derivatives.
3. Algebra: Matrices, determinants, complex numbers, and quadratic equations.
4. Probability and Statistics: Bayes’ theorem, mean, variance.
5. Vectors and 3D Geometry: Vector algebra, equations of lines and planes in 3D.

Hi there,

Hope you are doing fine.

In JEE Mains certain chapters frequently appear in the exam reflecting their importance across the years. Some of the key topics that have been recurrently emphasized include Physics chapters like Electrostatics, Current Electricity, and Optics which often feature multiple questions due to their foundational concepts.

In Mathematics, chapters such as Calculus, Coordinate Geometry, and Algebra are crucial with a practice of questions on topics like Integration, Differentiation and Complex Numbers.

For Chemistry, chapters on Physical Chemistry like Chemical Kinetics and Equilibrium as well as Organic Chemistry topics such as Hydrocarbons and Haloalkanes and Haloarenes are commonly tested.

Hope this resolves your query.