The elibility criteria for getting admission in Integrated Ph.D in  IISER Pune given on the official website is as follows:

Eligibility Criteria1. Students with minimum (55% or equivalent CGPA in aggregate for SC/ST and PD candidates  (overall percentage; not only in majoring subject) in B.Sc. (General / B.Sc. majoring in Chemistry, Physics & Biology) and qualifying additional criteria as given below can apply for Integrated Ph.D. Program in Chemistry starting August 2019. Candidates who are in the final year of qualifying degree, who have appeared/about to appear for the final exams can also apply for Int. PhD program. If selected for admission to the program, the candidate will be given provisional admission subjected to completing the qualifying degree, as per the criteria specified above, before August 1, 2019.

 AND

2. Candidates with rank No. 800 or less in JAM (Chemistry) 2019 can apply for the Integrated PhD program in Chemistry.
As it says you will have to score less than 800 ,I am really sorry to say that with an AIR of 7153 you can not get an admission in IISER Pune.

IISER Pune

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