B.Sc

Admission to the program is generally merit-based. The admission forms of the colleges are available between the months of May and June. The application forms are available both online and offline on the various university websites. After the application process is over, universities in dues time declare their cut off list for admission to the course.

Yes, ofcourse, you are eligible. Just search for the best college, and go for it.

https://www.google.com/amp/s/www.shiksha.com/science/articles/amp/what-is-bsc-course-all-about-know-the-full-form-eligibility-scope-blogId-13262.
Will help you to find out your answer in the link

You can do B.Sc IT or BCA from Bangalore.
There are many colleges in Bangalore.

Biotechnology Eligibility.
The basic eligibility criteria for pursuing B.Sc (Hons. ) (Biotechnology) degree, is qualifying 10+2 or equivalent examination with any three out of Physics, Chemistry, Biology, Mathematics or Computer Science as subjects studied at intermediate level.

Career scope:
Agricultural departments, extension services, research organizations, financial sector with focus on agriculture, micro-finance institutions , academia, fertilizer companies, agri-biotech organizations, commercial farming players.

B.Sc Math Honours is a 3-year graduate degree programme, the minimum eligibility is to pass class 12th from a recognized school board or its equivalent exam. Interested candidates can get admission in the course on the basis of candidates performance in a relevant entrance exam, and subsequent round of counseling.

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.

Go through this link
https://www.shiksha.com/university/mahatma-gandhi-university-delhi-31438?q=Mahatma+Gandhi+University+Delhi&rf=searchwidget&landing=ilp
Have a good day.