Hello Aakriti,

In many colleges there will an seperate applications and admission procedures for B.tech and B.Arch. Since NATA score is very important for the B.Arch admission they will have seperate processes for B. Arch applications and procedures. Therefore, first of all make sure you appear for NATA examination and get a good score in it. Then you will be able to apply and get admissions into many of the colleges for persuing B.Arch course. Otherwise it is very difficult for you to get admission into many of the colleges for architecture.

Hope this Helps.

Good Luck! will be very happy to help you with any other doubts