B.Sc Mathematics

Job wise, None. But academically, it allows you to pursue M.Sc. Or other higher studies that allow you to be eligible for several exams.

IISC is the best of the best. Crack exams like KVPY, SCB and JEE Advance to get a seat. Eligibility is like the common eligibility pass 12th with science stream that's it.

Yes, we can say this because geology has a better scope ahead in future. So, you can do B.Sc in Geology.
Good luck.

As the college has not disclosed the fee. I request you to contact the college officials on the contact numbers mentioned in the link:
http://www.mountcarmelcollegeblr.co.in/

Candidate must have secured minimum 55% aggregate in Mathematics. Aggregate in Mathematics, one language and two best electives would be considered best four subjects (BFS).
Environmental Education (ISC), Fine Arts, Graphic Design, Painting, Dance, Music, Physical Education, Home Science, Engineering Drawing and all other vocational subjects are not considered as BFS.

What do you want to do now? Your question isn't clear.

Yes, you can take admission.

Hello Manasa, Why not? Most of my friends were Maths background graduates and working in CTS, Infosys, Genpact, Honeywell. If you're pursuing software courses like python, C+, Java,. NET. Then you can have fair chances. All the Best for your future.