Humanities & Social Sciences

BA in economics deals with other fields of economics, as in macro micro, so it is much tougher than BA. On the other hand, BA only offer little bit of economics, which is really less as compared to BA in economics.

It depends on cut off. Every college varies in their cut off, and that's the advantage for science student, because they can apply for arts stream as in political science hons. English hons. He can opt for language course also.

It will depend on your favorable University. Political Science hons. is bit easier than from your Science subjects, so it's much easier for you to take up political Science hons. Best of luck for future.

Yes, definitely you can, but you have to clear entrance exam for your MA.

Eligibility Criteria / Entry Requirements: B.Sc. (Hons.)/B.Sc. under at least 10+2+3 pattern securing a minimum of 50% marks in the aggregate in Science subjects (considering all the three years of B.Sc. Course). The subject in which admission is sought must be a Hons. subject at B.Sc. (Hons.) level/subject studied in all the three parts at Graduate level. However, for admission to M.Sc. in Geography/Geography a candidate must also have offered Chemistry as one of the subjects at the graduate level.

https://googleweblight.com/i?u=https://www.shiksha.com/humanities-social-sciences/geography/colleges/colleges-india&hl=en-IN
https://www.google.com/amp/s/www.shiksha.com/science/articles/amp/top-10-bsc-msc-colleges-in-india-blogId-13473.Kindly go through the link for best college or university for B.Sc. Or B.A. In Geography in India.

http://www.sxcran.org/OnlinePayment/olEntarnceSyllabus.aspx
You can visit the above link.

Of course, you are eligible, but you have to choose subject of your MA. Good luck.