JEE mains is an entrance exam conducted for admission to various engineering colleges in top institute of India. Candidates who have completed there 12th with subjects like physics chemistry and mathematics along with English are eligible for applying. Candidates who have scored highest percentile in JEE mains will get into top NITs or iits.

Here is a list of topics in the syllabus

Mathematics

Sets, Relations and Functions

Complex Numbers and Quadratic Equations

Permutations and Combinations

Mathematical Inductions

Binomial theorem and its symbol applications

Sequence and Series

Limits continuity and differentiability

Integral calculus

Differential equations

Coordination geometry

Three dimensional geometry

Vector algebra

Trigonometry

Statistics and probability

Mathematical reasoning

physics

Physics and measurement

Rotational motion

Thermodynamics

Kinematics

Work, energy and power

Properties of solids and liquids

Gravitation

Laws of motion

Oscillations and waves

Electronic devices

Kinetic theory of gases

Current electricity

Communication systems

Electromagnetic induction and alternating currents

Magnetic effects of current and magnetism

Optics

Electromagnetic waves

Atoms and nuclei

Electrostatics

Dual nature of matter and radiation

CHEMISTRY

Physical Chemistry

Some basic concepts in chemistry

States of matter

Atomic structure

Chemical bonding and molecular structure

Chemical thermodynamics

Solutions

Equilibrium

Redox reactions and electrochemistry

Chemical kinetics

Surface chemistry

Organic Chemistry

Purification and characterisation of organic compounds

Hydrocarbons

Chemistry in everyday life

Principles related to practical chemistry

Organic compounds containing halogens

Organic compounds containing oxygen

Organic compounds containing nitrogen

Polymers

Some basic principles of organic chemistry

Biomolecules

Inorganic Chemistry

Classification of elements and periodicity in properties

Hydrogen

Block elements (alkali and alkaline earth metals)

P Block elements group 13 to group 18 elements

d- and f - block elements

Co-ordination compounds

Environmental chemistry

General principles and processes of isolation of metals

FOr detailed syllabus of maths,Physics and Chemistry refer the article below

https://engineering.careers360.com/articles/jee-main-syllabus