Hello aspirant,

The trenst show that the 40-50% of the paper is based on 11th grade ayllsyll while the rest is based on 12th. I'm listing here the important topics for the three subjects:

Mathematics

Complex Number , Quadratic Equations Coordinate Geometry (straight line, circle and conic section ), Calculus ( function, application of derivatives, definite integration are most important part in calculus ),3-D and vector, Bionomial theoem and Sequences and Series

Chemistry

Chemical Bonding and Molecular Structure, Chemical Thermodynamics, Electrochemistry ,Inorganic Chemistry ( most important part for jee main )Organic Chemistry( xiith class oganic chemisty is more imporant,full scoring ),Polymers and Bio Molecules, Environmental Chemistry, Chemistry in Everyday Life

Physics

Electrostatics,Current Electricity,Magnetic Effects of Current and Magnetism,Electromagnetic Induction and Alternating Currents,Optics,Dual Nature of Matter and Radiation,Atoms and Nuclei,Thermodynamics,Oscillations and Wave,

I hope this helps. All the best.