Hello dear aspirant

There are some good colleges and universities for B.Sc Geology,  some of which has a cutoff and some have an entrance exam. Some of these colleges are....
1) University of Delhi
Colleges like Hansraj college,  Hindu college are best for B.Sc Geology,  most of the North campus colleges are good at B.Sc Geology.
2)  University of Mumbai
3)  St. Xaviers college
4)  Banaras Hindu University
5)  Banasthali university

Hello aspirant,
I am glad to learn about your interest in this field.
As per your question i do understand the situation.
Here below are a few good colleges offering your course of choice:
St. Xaviers college
Presidency college
Hansraj college
University of Calicut
Sikkim University
Banasthali university

I hope this answer was helpful.
All the best.