Design

Yes, Aditya College of Design Studies provides course of B.Sc in Interior Design.
You can also refer to the following link to get detailed information about the course.
https://www.shiksha.com/design/interior-design/course/b-sc-in-interior-design-aditya-college-of-design-studies-borivali-west-mumbai-250449

Graduates who have completed this course can find lots of job opportunities in different fields of design industry. Designing is a growing industry in india with more people understanding their passion rather than blindly following medical and engineering. Students may choose course topics exploring different areas of design including interior, technical, fashion, interaction, visuals etc. BCA is a relative field to UI/UX, since your learnings on programming and software development would add value to your process as a designer.

Mit-Pune has started B.Arch courses recently (2 years ago), therefore not much is known about their quality of education for B.Arch courses. In terms for architecture courses I think it would be better to choose RV college of architecture over mit-Pune (mit-wpu ). .

Yes, you can if you have an undergraduate degree in any discipline from a recognized college/university.

Total Seats in National Institute of Fashion Technology (Mumbai) for Masters of Design General are only 30 seats and candidates will get the seats only by CAT & GAT Entrance examination.

NIFT-National Institute of Fashion Technology, Kolkata is undoubtedly the best college for fashion design courses in Kolkata. You can visit this link to get information about more colleges:
https://www.shiksha.com/design/fashion-design/colleges/colleges-Kolkata

Hardware Institute of Career and Education Development (GICED), Mumbai is the best college in Mumbai for interior designing.

You may go to this link you will know the fees as well as placement packages and everything
https://www.shiksha.com/design/interior-design/colleges/colleges-Mumbai-all

Hi,
Undoubtedly, interior designing is good career option, if you have creativity and ideas. It's a rewarding job. Keeps your mind fresh and young. You can earn enough in interior designing. So, go for it.