Hello aspirant.

Chemistry section in JEE mains is one of the most scoring and Important sections that every candidates must focus to fetch good marks in JEE examinations. you can start your JEE chemistry preparation from the NCERT textbooks as the NCERT textbooks will help you to cover all the basics and fundamentals for JEE mains examinations. Then, after comleting NCERT books, you can go for some high reference books for JEE mains.

Below are some best tips to crack Chemistry in IIT JEE :

1. JEE Main Chemistry Syllabus. ...
2. Read NCERT Chemistry Books for IIT JEE Preparations. ...
3. Focus on All 3 Parts – Organic, Inorganic and Physical Chemistry. ...
4. Periodic Table Is a Must Know. ...
5. Understand Complete Reaction Mechanism. ...
6. Learn Formulae Thoroughly.

Further, below are some of the best Books recommendations for PCM in IIT JEE ;

JEE Main Books Important for Mathematics

Trigonometry by S. L. Loney

Higher Algebra by Hall & Knight

Maths XI & XII by NCERT

Coordinate Geometry by S. L. Loney

Problems in Calculus of One Variable by I.A. Maron

JEE Main Books for Physics

Problems in General Physics by I.E. Irodov

Fundamentals of Physics by Halliday, Resnick & Walker

Concepts of Physics Vol I and II by H.C. Verma

Books for JEE Main Chemistry

Organic Chemistry by Paula Bruice Yurkanis

Organic Chemistry by Morrison & Boyd

Inorganic Chemistry by J.D. Lee

Numerical Chemistry by P. Bahadur

Further, For more information and complete details about the JEE mains tips and strategies and about the subject wise weightage in JEE mains, you can follow the belwo link :

https://engineering.careers360.com/articles/jee-main-preparation-tips

I hope that this will help.