Hi Aspirant! KCET is a state level entrance test which is conducted to invite students to take admission  into various B.Tech programmes offered by government and private institutions of Karnataka. Therefore, it is held in Karnataka.

For detailed information regarding KCET,  kindly visit

https://engineering.careers360.com/articles/kcet-2019

Dear Dhruv ,KCET is a state level exam managed by Karnataka Examinations Authority across 54 centres within Karnataka, Yes the test take place only within Karnataka and not in any other state . All indian nationals (NRIs included) with maths and physics as their primary subjects are allowed to appear for the exam. Hope this answers your query, in case of any issue feel free to drop a query .