TKM Institute of Management

Hello Krishna Priya,
I must say that your rank in KEAM is very good. I am sure that with this you should get the branch and college of your choice. I am attaching a link that will predict college for you.
https://www.shiksha.com/b-tech/resources/keam-college-predictor

Hi,
Yes, you have a very good chance to get admission in TKM College of Engineering Architecture department.

Yes, you may have a good chance, if you are qualified in NATA. Visit this link to check B.Arch colleges based upon your rank:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?utm_source=connect&utm_medium=CR_JEECP&utm_campaign=6919840
Then visit this link for various colleges which provides you brochure:
https://www.shiksha.com/architecture-planning/colleges/b-arch-colleges-india.

If you have completed your class 12th with Maths with 50% and have scored 40% marks in NATA, then you can take admission in TKM College of Engineering for B.Arch.

Eligibility Criteria for MCA at TKM College of Engineering.
Minimum qualification for admission is a candidate must have done B.Sc or B.Com or BCA degree with Mathematics or Statistics, as one of the subjects with not less than 60% marks, excluding languages, in the qualifying examination. There will be entrance test for admission to the course.

Sorry, but your rank is too high. You scored 200 marks in JEE paper 2.
300+ marks are considered for admission for B.Arch in NITs. So, you should try in any private college.
You will definitely get admission in top private colleges.