Hello Keerthinkumar,

Below I have listed 2019 eligibility criteria for NATA - 

• Qualifying Exam : Candidates should have passed 10+2 or equivalent exam with aggregrate marks of 50% . From 2019-20 session, diploma holders are not eligible for taking admission in architecture program.
• Qualifying marks : Candidates must have obtained atleast 50% marks in Mathematics,Physics,Chemistry taken together.
• Age Limit : Minimum 17 years of age 

Well inorder to get admission in B.Arch courses in any college, one needs to qualify  NATA. To qualify for NATA 2019 one must have secured a aggregrate marks of 200 ( 120 in MCQ & 80 in drawing ).The overall cutoff will be decided by COA based on post-exam statistics.

You can also go through this link and checkout the details about NATA 2019 : https://engineering.careers360.com/exams/nata

Here I have listed some of the government colleges that accepts NATA score -

• Guru Govindh Singh Indraprastha University
• Jadavpur University
• Indian Institute of Engineering Scinece & Technology
• Maharaja Sayajirao University of Baroda
• Andhra University College of Engineering
• School of Planning and Architecture University of Mysore

You can go through this link and checkout the list of all the government colleges accepting NATA score : https://engineering.careers360.com/colleges/list-of-government-engineering-colleges-in-india-accepting-nata

Hope this helps you. Good Luck !!!