Colleges in West Bengal

Yes, you are eligible provided you meet other criterias too.

Both of these technical colleges have good faculties, good student atmosphere. It depends on how you look at it. These technical institutes aim at making you a good engineer. It depends on how much you are willing to co-operate with them and how much faith and trust you are going to show them towards achievement of your goal. Basically, in terms of college infrastructure and facilities, I guess Heritage Institute of Technology is far ahead of many other popular colleges in Kolkata. In terms of placement, I feel IEM is a little ahead of what we have in IEM college.

No, it is not compulsory. You can apply for BBA without mathematics also.

No institution is bad if it suits you in a positive sense and you progress for a better profession.

Eligibility Criteria for B.Sc (Hons) in Chemistry :
Minimum 60% required in class 12th.
Mandatory Subject: Chemistry
Candidate should have secured 45% marks in the subject or related subject at the previous qualifying examination or 55% in the subject or related subject at the previous qualifying examination or 50% marks in aggregate when the candidate has not studied the subject in his/her previous qualifying examination provided all other clauses are satisfied.

Hello!
Among all IBS campuses, Hyderabad is the best one, so try for it if possible. And between these two, choose Kolkata. It's a decent college for pursuing MBA.