Geography

Hi Smiti,
Since you are asking me to compare two completely different subjects, it seems to me, you are interested partly in both. If that's the case, then I recommend going for BCA then MCA. There is a lack of good software for geographical and tectonic surveys and predictions. You might want to make that kind of software yourself when you know how to code. So, if you go for BCA and if you really like geography too, which is a rare case; then later on you can do web research on it and make awesome scientific software that sell, or websites for the same.

Dear Smiti,
Please check the below link for B.Sc. Geography Honours colleges in Kolkata.
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/humanities-social-sciences/geography/colleges/colleges-kolkata&ved=2ahUKEwjXrcn_r8riAhUk6XMBHct4DacQFjAFegQIBhAI&usg=AOvVaw0NewZRVWEyOEH30Ospp70F&cshid=1559463988407.

Yes, you can get admission in any college but your overall score should be good.

I don't think you should try for B.Voc but you should go for UPCS that will be more fruitful for you.

You don't need to worry about your mathematics skills, this course doesn't need it. As per your score in +2 in geography, it shows you can easily do this course.

Yes, of course, Ph.D in geography is offered by colleges in India.

Yes, of course, as these are great subjects to learn and study.