Hello there,

Studying important topics is very essential. It will give you an advantage in examination specially in exams like JEE mains.

Here is the link attached from the official website of Careers360 which will give you the list of all the important topics from all the subjects of JEE mains that is Physics, Chemistry and math. Hope it helps!

https://engineering.careers360.com/articles/most-important-chapters-of-jee-main

thank you!