Hello,

The qns for JEE mains & advanced are asked from physics, mathematics & chemistry. NCERT books are the best bcz they consisting of imp topics . This will help in strengthening particular topic. Best books to refer are:

For physics:

Science For Everyone : Aptitude Test Problem In Physics- S.S. Krotov.

Concepts of Physics Part 1nd 2 by H.C. Verma-HC Verma.

Problems In GENERAL PHYSICS- I.E. Irodov.

For mathematics:

Class XI and XII Mathematics- R.D. Sharma.

Golden Differential Calculus- N.P Bali.

Trigonometry, Geometry Books- S.L. Loney.

Problems Plus in IIT Mathematics- A Das Gupta.

For chemistry:

Inorganic Chemistry for JEE(Main & Advanced)- O.P. Tandon.

Numerical Chemistry for JEE(Main & Advanced)- P.Bahadur.

Organic Chemistry- Morrison Boyd.

For more information.

https://engineering.careers360.com/articles/best-books-for-jee-main .

Thankyou.