Here are some of the best books-

• Physics

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

         2. Problems in General Physics by I.E. Irodov

         3. Fundamentals of Physics by Halliday, Resnick & Walker

• Maths
  

         1. Maths XI & XII by R.D. Sharma

         2. Mathematics (Tata McGraw Hill)

         3. Calculus by J.Edward

• Chemistry
  

      1. Physical - i) Physical Chemistry by O.P.Tandon

                        ii) Numerical Chemistry by R.C. Mukharjee

                        iii) Physical Chemistry by P.W. Atkins

      2. Organic - i) Organic Chemistry by O.P.Tandon

                        ii) Organic Chemistry by Morrison and Boyd

                        iii) Organic Chemistry by Solomons
     

     3. Inorganic - i) Inorganic Chemistry by O.P.Tandon

                         ii) Concise Inorganic Chemistry by J.D.Lee

I have mentioned only some of the books. For more books, you can visit-

link : https://www.askiitians.com/iit-jee/advanced/important-books.html

Good luck.

Dear Shanu,

As you are asking for siggestion .

for physics: i will recomend you to go for H.C. Verma & if you have much time you can go for I.E. Iridov is a great little book if you are really interested. 

for chemistry :I can’t stress on how important NCERT is. seriously read it .

for maths :MTG publication’s math.

Hope it clears your query.

Good luck :)