As you have asked about the books for the preparation of the WBJEE Medical exam MCQ questions, I am mentioning them

WB JEE Medical Entrance Solved Papers (2014 – 2006) (English) 4th Edition
Chapterwise Explorer WB JEE 2014 – Physics, Chemistry : Medical (English) 1st Edition Author: MTG Editorial Board
8 Mock Tests & Solved Papers for WB JEE Medical Entrance
Chapterwise Explorer WB JEE 2014 – Biology : Medical (English) 1st Edition
Higher Secondary books- Part 1 and Part 2(WBHSC)
Rudiments of Biology- MCQ type
Pradeep’s Biology
SC Verma (Part-1 and 2)
MTG (Biology Today) CBSE PMT (Subscription)
NCERT- Biology Part 1 and Part 2
Trueman’s Biology
Dinesh’s Biology
AC Dutta for Botany (Oxford Publication)
Higher Secondary books- Part 1 and Part 2(WBHSC)
Rudiments of Chemistry- MCQC Type
Peter Atkins and Julio de Paula for Physical Chemistry
Arihant Organic Chemistry
NCERT- Chemistry Part 1 and Part 2
Dinesh Chemistry
Morrision Boyd for Organic Chemistry
Higher Secondary books- Part 1 and Part 2(WBHSC)
Rudiments of Physics- MCQ type
Concept of Competition Physics for CBSE PMT by Aggarwals
NCERT- Physics Part 1 and Part 2
Physics: CBSE PMT set of 3 Volumes by Anil Aggarwal
HC Verma for Physics