Hello Mohsin,

The process of admission in BMS course varies from college to college.

Most colleges like St. Xavier, DU and NMIMS conduct their own entrance exams which may be followed by a group discussion or interview round and your performance in these respective entrance exams determines your selection for the course in the given college. 

But to be these exams also have their own eligi criteria, for example to be eligible for DU-JAT you must have a minimum of 60% in four of your five 12th board subjects if you are a general category student and a minimum of 55% if you are a reserved category student

Some colleges however provide admission into the course based on the 12th board results alone. Management seats of most private colleges offer admission based solely on 12th board results