MBA/PGDM

You can pursue PGDM/MBA after BCA for sure but choose a country as per your financial, cultural preference and ROI. It is better to have some work experience before applying to universities abroad. You need to appear for GMAT and TOEFL or IELTS to get into the universities in USA, UK, etc.

The college is decent for HR specialisation. The faculty, internships and placements are reasonably good.

Both are equivalent and have same value, you can go ahead with anyone as per the colleges offering. PGDM has slight advantage being more industry oriented course.

Yes, you can, take top entrance exams like CAT, CMAT, SNAP and XAT. They help you to get into top colleges and score good in them then your backlog will little effect in getting selected.

DY Patil and NMIMS are the great colleges for decent placements opportunities and good learning plus faculty experience. Infrastructure is also very good in these colleges.

In earning point of view, HR is good and if really want to do research, want something different to do, biotechnology is preferable.

Yes, you can go for integrated MBA in which you will learn BBA+MBA (5-year course). If you want to do MBA then go for it, otherwise do Bachelor’s and then MBA because you can change your stream in between the courses.

Hi,
For that you need to start preparing for:
Common Admission Test
Management Aptitude Test
Xavier Aptitude Test
The Tata Institute of Social Sciences Entrance Exam
All India Institute of Medical Sciences New Delhi
University of Delhi- Faculty of Management Studies
Punjab University
Birla Institute of Tech

Yes, you can do MBA from IIMs. There is no restrictions for you.