hello aspirant,

I would like to tell you that Being a Class 12th passed candidate with PCB group you are not eligible for pursuing Bachelor of Architecture degree course as for the same you need to be a higher secondary school degree holder with Mathematics as main subject with at least 50% aggregate from a recognized board .

You can appear for NATA but you can't get admission in architecture course as the eligibility criteria is 12th passed with maths and English for science students.

Further, if you wish to know more details about B.Arch then you can follow the below mentioned link to know more about it : https://www.careers360.com/courses/b-arch-bachelor-of-architecture

I hope that this will help.