There is no college that offers CA course. CA is a professional course and does not require admission in any college neither does it require a any graduation degree for doing CA course. Talking about some of the best colleges in Chennai that offer b.com  hons. course is Loyala College,Stella Maris College ,MOP Vaishnav College for Women and  Anna Adarsh College for Women . Along with doing your graduation from any of these colleges you can register yourself with ICAI and start your CA journey.