Dear Umarshaikh,

To check the top colleges in petrochemical engineering you can refer below

Maharashtra Institute of Technology, Pune

Maharaja Sayajirao University of Baroda, Vadodara

Jawaharlal Nehru Technological University College of Engineering, Kakinada

Rajasthan Technical University, Kota

University College of Engineering Bharathidasan Institute of Technology Campus Anna University, Tiruchirappalli

To check the complete list you can refer below link

https://engineering.careers360.com/colleges/list-of-petrochemical-engineering-colleges-in-india

Good Luck!!