Hello,
.
You haven't mentioned above the course you want to take in post graduation to provide you the details. College ratings may be differ according to the course and it's facilities, please do mention further more information.
.
If talking about medical colleges

• Christian medical college
• Moulana Azad medical college
• Kasturba medical college

https://medicine.careers360.com/colleges/ranking/top-medical-colleges-in-India-accepting-neet-pg-score
.
If talking about Management colleges

• Indian institute of management
• Management development institute
• Faculty of management studies

https://bschool.careers360.com/colleges/ranking
.
If talking about law colleges

• National law school of India university
• National law university
• NALSAR Institute of law

https://law.careers360.com/colleges/ranking
.
If you are searching for something, please do comment. Thank you

Hello
Best postgraduate universities depend on the course you want to seek admission in. Some of the top universities in different courses are:
For engineering: IITs, NITs
For Law: NLUs, University of Delhi
For Management : IIMs, FMS.
For medical: AIIMS, Maulana Azad Medical College
For science, arts: IITs, TIFR, JNU, University of Delhi

So, depending upon the course you want to pursue postgraduation in these are the premier institutions.

Good luck

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