Yes like even in paper applications, often forms are repeated. Truly, when you have a receipt from the server that forms have been received by both the Dy director and the respective college, along with receipts for payments, you should feel reassured. However, we are not preventing any one from making multiple applications, except that we shall warn a student (seatnumber) while applying online if multiple application is made to same college..
Yes, you can submit your application both online as well as on paper.