B.Sc Geology

Yes, you can study geology at UG level and then after that, you can do Post Graduate Diploma or MA in Archaeology.
The best colleges are:
ICHR, New Delhi
MS University, Baroda
Banaras Hindu University
Mumbai University
Madras College of Archaeology

Please download the brochure of this particular college from the link provided below which contains important details like admission criteria, eligibility and important application dates for M.Sc courses offered by the college.
Link:
https://www.shiksha.com/college/sinhgad-college-of-science-ambegaon-bk-pune-52919

Please refer to the link provided below for details about admissions in St. Xavier's College in Ranchi. You should be able to download their brochure which contains important details like last application dates, admission criteria and eligibility for B.Sc courses in this college.
Link: https://www.shiksha.com/college/st-xaviers-college-ranchi-10300

Most colleges require that you pass all core subjects before you can successfully apply for a course in higher education. It could also mean that you can apply for a course in B.Sc. Geology provided you clear your examinations before date of commencement. Moreover, if maths is not one of your core subjects, then you can take the best 4 and apply for B.Sc in geology.

Please refer to the link provided below:
https://www.shiksha.com/science/course/m-sc-in-food-sciences-and-nutrition-gujarat-university-navrangpura-ahmedabad-270212
You can contact the college directly via phone or e-mail. If you are concerned about the fees please download their brochure which includes fee details.

Hi, Geology covers the topics you are interested in. You may look for a more specialized field in your Masters such as Earth Sciences, Earth and Environmental Sciences, Environment, Earth and Ecosystem Sciences etc.

Hi Satish,
You may refer to this college comparison tool provided by Shiksha:
https://www.shiksha.com/resources/college-comparison