Hello Chinmoy,

It's hard to compare different branches of St.xavier .

Both are very good colleges for UG Courses .

I suggest you ST Xavier's college Mumbai is good for BMS because it has introduced in 1999.

St. Xavier provides more internship and industrial tours than compared to St. Xavier's Kolkata .

Though Mumbai is a small campas it provides to have a good college life which should be remarkable in student Life .

Thank you

All the best