Hello student some of the best economic colleges are as mentioned below -

1. Jamia Millia Islamia, New Delhi
2. Indian Institute of Technology Bombay
3. Maharaja Sayajirao University of Baroda, Vadodara
4. Christ University, Bangalore
5. Guru Gobind Singh Indraprastha University, Delhi
6. Delhi Technological University, Delhi
7. Banaras Hindu University, Varanasi
8. University of Hyderabad, Hyderabad
9. Savitribai Phule Pune University, Pune
10. Ravenshaw University, Cuttack

For more details refer to the link mentioned https://university.careers360.com/colleges/list-of-economics-universities-in-india

Good luck