Architecture

Hello Nandhakrishnan,
The required subjects in 10+2 is English and Mathematics only. So, you are eligible to do B.Arch provided you have cleared +2 with minimum of 50%.
You should also appear for entrance exams like NATA, JEE main paper 2 etc. to secure admission into the good colleges for B.Arch.
All the best.

Please refer to the link mentioned below for a list of top colleges offering courses in B.Arch:
https://www.shiksha.com/architecture-planning/colleges/b-arch-colleges-india

Eligibility for B.Arch. Candidates should have minimum score of 40% in National Aptitude Test in Architecture (NATA) I.e. at least 80/200, for consideration of admission into first year B.Arch.

Yes you can get admission by giving NATA entrance exam.

Bachelor of Architecture (B.Arch) is a well-known undergraduate Bachelor's degree program of Architecture. Architecture is the art of planning, designing, and constructing buildings and other physical structures. You can become an Architect after completing B.Arch education.
The study of B.Planning deals with ultimate planning techniques. The working areas include metropolitan cities as well as small congested towns, cities and also villages. For the country like India, future scope is getting better.

Please refer to the link below for a list of top MBA (Construction Management) colleges in West Bengal:
https://www.shiksha.com/mba/ranking/top-mba-colleges-in-west-bengal/2-2-127-0-0

If there is a tie-up with your current university, and Pune university, you may be eligible for a lateral entry in 2nd year. You would also require a minimum grade to qualify for lateral entry. You should check with your university's admission department for the same.