As per the the eligibility criteria is cencerned the first and for most criteria is to be an indian citizen.

later  if this criteria is fulfilled then later you can have a look at the following criterias mentioned in the brochure .

I am mentioning the link for the further infomaton.

link:http://kea.kar.nic.in/

Bachelor of architecture is a course in which you study about architecture it is a 5 year professional degree course and you can go for job after completing the degree or you can start your own consultancy firm but it is possible only when you get experience it is more like a doctor where you build your own identity read the rain going for a job therefore there are no placement in contrast to engineering but once you start practicing and help to complete the big projects then you get fame and once you get fame you can earn lot of money.