UPSC

Hi Anchal,
Rather than an option, your focus should be on your interest apart from civil services. Try to focus on the areas/subjects which you have an interest in and that will pave way for your career goal. Though some of the popular options are:
B.Sc from any good university, and later on go for specialization courses
BBA/BBM and later on MBA
B.A. courses can also be helpful, as a lot of syllabus of civil services exam would be covered in your graduation years. Plus, later on, you can go for NET/JRF exams for professorship positions.

Here are a few good coaching centers for UPSC:
1.Gurukul IAS Study Circle
Tutoring Service Raipur, Chhattisgarh
2.PATH IAS ACADEMY
Coaching Center Raipur, Chhattisgarh
3.Gyan Ias Academy
Training Centre Bilaspur, Chhattisgarh
4.ETEN
Civil Services Entrance Coaching Center Bilaspur, Chhattisgarh

Yes, it is recognized by UGC and you can take UPSC or CAT after completing your UG from Galgotias University.

Yes, you are able to apply in competitive exams like UPSC. The only condition is, that you should fulfill all the criteria of exam. Only being pass is not the case, cutoff is little higher

There is huge difference between both. In BA. Programme, you will get 4 arts subject like Hindi, English, Economic etc. in each semester. But, in political science (Hons.), you will get all subjects related to politics. These subjects can be Indian politics, foreign politics etc.

Yes, you can.
You can prepare for UPSC after classes in college.
Also, you can join coaching for it.

Hi Anshu,
The coaching centers are famous according to different stages of examination: prelims, mains and interview. Though a lot of free material is available online, which can easily help you prepare for examination like Mrunal, Insight, etc. Some of the best coaching institutes are:
Vision IAS
Vajiram
ALS
Khan Study Group
Chanakya IAS Academy

I think you can't do it because for UPSC exams, graduation is compulsory.