Hello Shoaib,

No book is necessary its upto you which book you want to choose

JMI entrance exam is carried out by the state of Jharkhand for the admission to both Medical and Engineering colleges in the state. You can refer different books for PCM subjects. Here are some good books regarding preparation

For Physics subject refer the CBSE PMT by Anil Aggarwal or the HC Verma.

For maths you can refer to R. S. Aggarwal or S.L. Loni.

The chemistry will be covered with the help of books from Arihant Organic Chemistry or NCERT.

NCERT books are always best for preparation.

Good luck.