Hello Vasu Narayan Swamy,

Following is the list of top institutes of India which provide BSc. Maths Research:

1. LOYOLA COLLEGE, CHENNAI
2. PRESIDENCY COLLEGE, KOLKATA
3. FERGUSSON COLLEGE, PUNE
4. ST. STEPHEN'S COLLEGE, NEW DELHI
5. MADRAS CHRISITIAN UNIVERSITY
6. CHRIST UNIVERSITY
7. ST. XAVIER'S COLLEGE, MUMBAI
8. ST. XAVIER'S COLLEGE, KOLKATA
9. PRESIDENCY COLLEGE, CHENNAI
10. OXFORD COLLEGE, BANGALORE

Hope this helps