You can get some information from the name itself, BA which is Arts aligned and Bsc which is aligned towards Science. In BSc Economics you will study mathematics and statistics at advanced level. Whereas, in BA Economics, you will study the subjects of mathematics and statistics at basic and medium level.

Colleges for Bsc Economics are:

St. Stephen's College, New Delhi

Indian School of Business & Finance

Presidency College, Kolkata

St. Xavier's College, Kolkata

Indian Institute of Management and Commerce

Colleges for BA Econimics are:

Lady Shree Ram College for Woman, New Delhi

Loyola College, Chennai

St. Xavier's College, Mumbai

Christ University, Bangalore