As per the online data available, most of the IIM graduates gets a job with a starting CTC of Rs.28LPA-31LPA. It may get higher or lower depending on your background, knowledge and credibility.
To know more about the IIM's in India you can visit the link provided below:
https://bschool.careers360.com/colleges/list-of-top-iim-colleges-in-india
I hope this answer helps. All the very best for your future endeavors!
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