Kolkata

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Hello Aparna,
Yeah, for sure, you can take admission into IEM, Kolkata via your JEE Mains rank but for this you need a rank under 50000 to get any good branch, however, considering your rank your chances are nil.

Hello Rakesh,
Heritage and Haldia are not very much known for lucrative packages, so if you are considering mechanical branch and looking forward for heritage and Haldia then you might be on wrong path, however if you want to be placed in top notch companies with high packages then look forward for IIT's/NIT's and BITS, Pilani.

I hope you understand that this score is not enough to fetch you a seat in a reputed college. You can still try for some regional government colleges. Else, you will have to go for private colleges.

View 21BBA colleges in Indore. See eligibility, admissions process, fees, course details, reviews and other details.
https://www.google.co.in/url?sa=t&source=web&rct=j&url=http://www.shiksha.com/bba/colleges/bba-colleges-indore&ved=0ahUKEwjB8cX24bPUAhWDpY8KHVQjDYEQFgg9MAA&usg=AFQjCNHvFUSGmK-wsp3-9w-WKEQJFQEcfg&sig2=8uSfSNH7ZauDHqrWR5C9og

Yes, if you have appeared for WBJEE you can get admission in RCCIIT, enter your rank in the link given below and get the list of top colleges:
https://www.shiksha.com/b-tech/resources/wbjee-college-predictor

Hi,
Both are good B-Schools for MBA and both the B-Schools have good placement record. According to me, GIF is a better option. Please do your own research and choose the college according to your interest. It's just a suggestion.
All the best.