MBA/PGDM

https://www.shiksha.com/mba/distance-mba-chp3
Here you can find different colleges as per your preference for distance MBA.

Following are the exams by clearing any of which, you are eligible to become a teacher:
TET, CTET SLET, NET CSIR NET SET, PRT, PGT, TGT, B.Ed and M.Ed.

If you score well in GMAT, then definitely, you can get admission in good college for MBA in a foreign country.

It would be best if you go for M.Sc. Since you have pursued B.Sc, MBA is also good but by doing M.Sc., you will be able to pursue higher education in your domain.

Follow the link and you will find the list of top 10 distance MBA colleges:
https://www.shiksha.com/mba/articles/top-10-institutes-for-distance-correspondence-mba-blogId-6301

Go to the following website where you will find different exams for MBA entrance and underneath each, there is a tab of question papers where you can find question papers:
https://www.shiksha.com/mba/exams-pc-101

Bangalore being the IT hub there are ample opportunities for MBA students as well.

Dear Shubham, Only 7% of MBA graduates from Indian business schools, excluding those from the top 20 schools, get a job straight after completing their course, " it found. The report says that only 7% of the MBA graduates are actually employable. "Around 220 B-schools have shut down in the last two years in Delhi-NCR (National Capital Region), Mumbai, Kolkata, Bangalore, Ahmedabad, Lucknow, Hyderabad, Dehradun etc. And at least 120 more are expected to wind up in 2016, " it said. Regards.

Yes, you can do MBA after doing pharmacy.

The minimum eligibility criteria is UG.
As you have mentioned that you have completed your graduation, so you are eligible for it.