Here I am suggesting you reference books for preparation of JIPMER Entrance Exam

Reference Books for JIPMER Entrance Exam
JPNP Objective Physics by Sanjeev Gupta
Pradeep Objective Chemistry by S. N. Dhawan, S. C. Kheterpal & J. R. Mehta
G. R. B. Objective Physics by Dr. Pramod Agarwal
NCERT- Biology Part 1 and Part 2
Objective Physics: For Medical & Engineering Entrance Exam by Mahesh Jain
Biology Medical Entrance Previous Years’ Questions with Solutions by Sudhakar Banarjee
JPNP Objective Subjective Zoology for Medical Entrance by Dr. S. P. Kurl
Pragati Mega Study Package Objective Botany by M. U. Charaya
Concept of Competition Physics for CBSE PMT by Agarwals
NCERT- Physics Part 1 and Part 2
Prakash Objective Botany by Dr. Naresh Kumar & Mrs. Jaishree Malik
G. R. Bathla Objective Chemistry by Dr. Prakash Bahadur