B.Com

This would depend on your interest areas and career aspirations. Each MBA specialization needs specific personality traits, so it is advisable that keeping in mind ones personality one decided the specialization. For example- if you are an extrovert and like interacting with people and being on field the Sales & Mkt could be the option. It you are good in people management & counseling then HR could be a preference. If you are good in managing & organizing / coordination then Operations could be a preference.
So, please evaluate your personality traits & also check with your friends & relatives on your strengths & then take a call.

Yes, you can try for NIT-Warangal institute, because you have scored a well good score for. I think that you will get the admission. So, please let me know what's so ever happened.

Yes , You can as the eligibility says the student must have passed 12th with the required eligibility Percentage (50%-70%) to pursue B.Com.

Yes, he is eligible to do this. Good luck.

You get all information about Doon business school placements, structure and also able to read reviews about this college from the bona fide students of this college here
https://www.shiksha.com/accounting-commerce/course/b-com-dbs-doon-business-school-Dehradun-90748
Hope it helps you well.

I think you can take entrepreneurship in best four for B.Com programme also tell me what college or University you talking about but definitely entrepreneurship can be taken as one of the subjects in BFS.

Eligibility criteria for reserved classes is :
For SC/ST/PC candidates there is an age relaxation of 5 years and for OBC category it is 3 years in upper age limit.
Further information is present on the link provided below :
https://www.shiksha.com/accounting-commerce/course/b-com-hons-banaras-hindu-university-varanasi-30928

Hey Riya ,
well the cut off for this college is 45% for commerce students and 50% for the students of arts and science graduates.
this may also help you
find the link given below :-
https://www.shiksha.com/accounting-commerce/course/b-com-hons-magadh-mahila-college-patna-university-275134