You must cover these topics
Geometry
Algebra
And calculus in mathematics
Inorganic chemistry
Thermodynamics
Solutions
Atomic structure in chemistry
Optics
Thermodynamics
Fluid
Wave
Electrostat
Kinematics
Laws of motion
In physics

But one thing that you can not depend upon one topic because no one can say that exam committee will definitely put question from that topic.
So better to prepare with all syllabus and atleast go through all the topics once.
Good luck

Hello zhavia,

I suggest you to go through the given link to know important topics and the preparation tips given by experts,

• https://engineering.careers360.com/articles/jee-main-2019

Copy above link and paste it in the address bar of your browser.

Please refer previous year papers and ncert books,you can easily get 150+.

All the best!

I Hope this information will be useful to you.

If you need additional information,let us know to help you.

Thank you!!!:)

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