CBSE 12th

I don't think there is any for your rank. I mean that JEE Mains rank. Besides, there isn't any govt. college in Delhi except for DTU, NIT and IIIT. None will offer you admission on the basis of your rank.

Here are some suggestions:
JECRC (Jaipur)
JIIT (Noida)
LNMIIT (Jaipur) .
But I don't know about their last date for form submission and one more thing, all of them are private colleges. Also, consider BML Munjal University, Gurgaon. It's new and showing great potential.

B.Sc interior designing needs +2 (all streams) with a minimum of 50% marks. Prospective applicants are required to appear for an open test conducted by the Navrachna University.
Good luck.

You can go for B.Com+CA or you can also go for B.Com+MBA, BBA+MBA provided you do MBA from a good college so that it would be better for your future and career growth.

Hello Luke,
KIIT University takes the exam in which college checks the potential of students and they understand where students stand in the race. So if you scored good then they call you for counseling and they have minimum eligibility percentage below which they do not take admission.

Hi,
Kindly refer to these links to know the scope of event management in India:
http://employmentnews.gov.in/CAREER_IN_EVENT_MANAGEMENT.asp
http://surejob.in/event-management-career-in-india.html
Event management being a booming industry will provide you various opportunities and you should definitely go for a course in the same if your interest lies in it.
Here is a link to a list of the top colleges offering this course:
https://www.shiksha.com/hospitality-travel/event-management/colleges/colleges-india