BBA

Yes, there are. IIMs are known to promote diversity and they strive to get good candidates from all domains (For example: we have doctors, lawyers too). However IIMs do not offer any advantage to BBA graduate over others and you will have to compete with everyone else to get a seat in IIMs.

parameters to look out while choosing should be curriculum, placements, teacher student ratio.
plz check below links
https://www.shiksha.com/bba/colleges/bba-bms-bbm-bbs-colleges-in-ahmedabad
https://www.shiksha.com/bba/colleges/bba-bms-bbm-bbs-colleges-in-mumbai

parameters to look out while choosing should be curriculum, placements, teacher student ratio.
plz check below links
https://www.shiksha.com/bba/colleges/bba-bms-bbm-bbs-colleges-in-ahmedabad
https://www.shiksha.com/bba/colleges/bba-bms-bbm-bbs-colleges-in-mumbai

plz checj below link for all the bba colleges in Gujarat.
Revert back jncase you have doubts.
https://www.shiksha.com/bba/colleges/bba-bms-bbm-bbs-colleges-in-ahmedabad

Yes. In my knowledge, IIMs consider only full time, regular bachelor's program and not the distance programs.

what about doing Bsc biotechnology?

B Tech is for those who have learnt Physics, Chemistry and Mathematics during their +2. B Tech stands to be one of the most preferred options by many aspirants. This does not mean that B Sc is bad. If you are interested in management and wish to climb the corporate ladder, then BBA is not a bad choice. if your ultimate aim is an MBA, then any degree will do.

Dear Rohan, you must first complete your BBA and then comes MBA, to do your BBA you need to complete 10+2 and give SAT and TOEFL. Post your BBA you have to gain few years of work experience to be eligible for MBA. Again for MBA you must take GMAT.