Hey Aditya!

In case you get rejected, you can definitely take admission in the next cut off matching your eligibility percentage and criteria. In case you are able to secure admission in the college you applied in first cut off, then for applying in the second cut off you will first have to cancel the application and then proceed to select a college and course from the second cut off and apply fresh. You can only apply once in every cut off and that too after cancelling your application from the previous cut off.