Hi,

I would like to tell you that there is no nedd to study 6th or 7th standard books for NEET or JIPMER. NEET and JIPMER includes syllabus of 11th and 12th standard of CBSE board. The subjects are Physics, Chemistry and Biology. NCERT books are most important and preffered books for both the exams. Other than this, you can refer Modern ABC of Biology, Concepts of Physics, and O.P.Tondon for Chemistry. Hope this helps.

All the best!!