Hello Aspirant,
All chapters that are mentioned in the JEE-Main syllabus should be first coveted from NCERT and the for same topics the questions shoul be practiced from some reference books. Sp i am mentioning down the JEE-Main syllabus :-

@Mathematics  
> Complex numbers and quadratic equations
> Matrices and determinants
> Sets, relations and functions
> Mathematical induction
> Permutations and combinations
> Mathematical reasoning
> Limit, continuity and differentiability
> Integral calculus
> Three-dimensional geometry
> Differential equations
> Binomial theorem and its simple applications
> Sequence and Series
> Vector algebra
> Statistics and probability
> Trigonometry
> Co-ordinate geometry

@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
+Experimental skills

@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 characterization 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 complete syllabus for JEE-Main and  their PDFs along with the detailed content weightage,  kindly check out the link given below :-
https://engineering.careers360.com/articles/jee-main-syllabus-weightage

You can also check out JEE-Main Learning package for solving series of mock tests :-  
https://learn.careers360.com/knockout-jee-main-april-one-month-subscription/?icn=jee-main-knockout&ici=c360-clevertap-sticky-articles-web


I hope this information helps you.
Good Luck!!