Hi Rupesh,
Admission process varies from university to university. Most universities just have the admission forms online whereas the actual admission is done when they put up the merit list and you have to visit their campus to pay the fees or answer an interview. Although some universities do have offline admission where it is compulsory for you to go to the campus itself and get your admission done. So if you want to know the admission process for any particular college, do let me know.
Good luck