Dear Pavani, The Ministry of Human Resources Department in a letter dated January 19th, 2019 has stated that only those students who have completed their 10+2 with Physics, Chemistry and Mathematics with a minimum aggregate of 50% are eligible for applying for NATA for B.Arch students. Thr Council of Architecture has written back to MHRD requesting them to reconsider this because Diploma is equivalent to 10+2. And MHRD is yet to respond. Until then, Diploma students are ineligible for NATA. So you might not be able to appear for the exam in April session. You might have to wait until July session to see if this changes.