B.A Geography

Yes, BA in geography is also available which you want to enquire about. It is the three years graduation course after class 12. With arts stream as well. It is also available in many good colleges of India.

For Delhi University, you have to register first with the official website. Application process is online only. DU will open admissions in June, most probably in the last week. Then in second or third week of July, they will release merit list having percentage at which they are providing admission.
www.du.ac.in

Hello,
After completing a BA Geography, you can take admission for M.Sc. Geology also, because these both are from one branch, so absolutely you can take admission for Masters in Geology.

https://www.jmientrance.com/recommended-books/
See these books.

Hi,
Eligibility Criteria:
Candidate must have passed Graduate in any discipline from recognized University. For more details information you can see below link:
https://www.shiksha.com/humanities-social-sciences/political-science/course/m-a-in-political-science-nalanda-open-university-Bihar-other-270130
Yes, you are eligible.
Thanks.

Yes, you will be eligible for remote sensing GIS. Good luck.