Hello,

NCERT Books are highly recommended for each subject, apart from this you can go through others books mentioned below-

• For Physics - Concept of Physics by H.C Verma and Understanding Physics Series by DC Pandey
• For Chemistry - Physical Chemitry by O.P Tandon, Concepts of Organic Chemistry by O.P Tandon
• For Mathematics - Mathematics by R.S Agarwal, Objective Mathematics by R.D. Sharma

For sample papers of WBJEE, consider going through the following link-

https://engineering.careers360.com/articles/wbjee-sample-papers