BBA

This has been already answered. There is no specialization in BBA, rather electives. Most common are marketing, HR and finance. You should choose one considering your own career plan.

No, this problems shall not occur because all basics of Commerce are taught here . Don't worry, be cool.

This is not a BBA+MBA graduate course. The IIMs are not allowed to offer degrees as of now. At the end of 5 years, you will get a Diploma. As to pursuing doctoral programs, there is no precedence for this as no student has opted for it till now, who was a participant in this course. But one thing is

Fashion technology and BBA are both different domains. You first need to decide what career you really want to take. You should try and pursue a career in an area which interests you.

For entrance exam structure, visit:
http://mitacsc.ac.in/entrance-test.php

Jagannath University, SGT University, GD Goenka University.
Check the below link for BBA colleges in Delhi/NCR-
https://www.shiksha.com/bba/colleges/bba-colleges-delhi-ncr

Airport Management is part of our Travel and Tourism course.

Acharya Bangalore is better.