Hello Aspirant,

For JEE-Main and JEE-Advance, I am enlisting down some very important topics from every subject that are Physics, Chemistry and Mathematics :-

@Physics

• Modern Physics
• Heat and Thermodynamics
• Optics
• Current Electricity
• Electrostatics
• Magnetics

@Chemistry

• Transition Elements and Coordination Chemistry
• Periodic table and Representative Elements
• Thermodynamics And Gaseous State
• Atomic Structure
• Chemical Bonding
• Chemical And Ionic Equilibrium
• Nuclear Chemistry And Environment

@Mathematics

• Coordinate Geometry
• Limits, Continuity and Differentiability
• Integral Calculus
• Complex numbers and Quadratic Equation
• Matrices and Determinants
• Statistics and Probability
• Vector Algebra

You can also check out JEE-Main Learner package for your preparation :-

https://learn.careers360.com/jee-main-coaching/?utm_source=%20QnA

I hope this information helps you.

Good Luck!!