Hello Sharif
According to the NEET 2019 eligibility criteria
Candidates belonging to the Unreserved categories should have scored 50% minimum aggregate marks in the PCB subjects. Candidates belonging to OBC/SC/ST categories should have scored 40% aggreagte marks in PCB subjects.
And according to the AIIMS MBBS eligibility criteria, the minimum aggregate of the marks secured in English, Physics, Chemistry and Biology should be 60% for General and OBC candidates and 50% for SC/ST/PWD candidates.
So, you are eligible to apply for both the exams.
Go through the link below to check the detailed eligibility criteria

https://medicine.careers360.com/articles/neet-eligibility-criteria

https://medicine.careers360.com/articles/aiims-mbbs-eligibility-criteria

Good Luck!

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