Hello Sush,

The selection of students are done as per the cutoff marks of specific college which changes from college to college.

IF you select only one college and you are not eligible for that college(i.e. your marks are not sufficient to get admission) then you will not get any college.

There can be a chance that you can get the college you want but there is also a chance that you wont get.Its always better to keep backups you should choose other colleges you and keep the college you want as the first priority.

Selecting multiple colleges priority wise will be the best option.

hope this may help you.