IIM CALCUTTA is the best known IIM as per the reviews for pursuing OPERATIONS MANAGEMENT. Apart from IIMs, other best college for operations management are

1. National Institute of Industrial Engineering Mumbai
2. SP Jain Institute of Management and Research Mumbai
3. SJM School of Management

Refer to our site to get more detailed information..

https://bschool.careers360.com/colleges/list-of-operations-management-colleges-in-india

Best wishes .thankyou.