Hi Kiran,

Thanks for putting up the query. S.C. Malik, Gorakh Prasad for Maths; B.S. Grewal, Shanti Narayan for Chemistry; Riley, Hobson & Bence for Physics are some of the books you can refer for preparation of IIT JAM. For more details, follow the links below:

https://university.careers360.com/articles/jam-how-prepare-for-mathematics

https://university.careers360.com/articles/jam-how-prepare-for-chemistry

https://university.careers360.com/articles/jam-how-prepare-for-physics

https://university.careers360.com/articles/how-prepare-for-jam

Hope this helps!