Science

If you intent to know about the eligibility requirement for B.Sc Mathematics, then as per the internet research the eligibility criteria for B.Sc Mathematics is as below. The candidate should have passed 10+2 with These Subject Mathematics, Physics, Chemistry, Biology, Botany, Zoology and Computer Science. There is no minimum marks obtained in class 12th.

I believe you must have experienced B.Tech course, which focuses more on technical aspects not on the research/Science aspects. So, rather than taking suggestions from other people you should evaluate yourself on the basis of your experience. And, then decide whether you want to master in the details of the subject or you want to contribute to technical expectations of the world. Good luck for your future.

You can find the detailed syllabus by clicking the link below. https://www.shiksha.com/university/andhra-university-visakhapatnam/aucet-exam-syllabus.

The cut-off varies every year, but according to the previous year cutoff, you need to get a rank under 60000-90000 in JEE Main to get admission in Pant Nagar University. You will need to score around 87-100 to get admission there. All the best.

Below is the fee structure for M.Sc in Industrial Microbiology in Babasaheb Bhimrao Ambedkar University.
Year 1 INR 4,000
Year 2 INR 3,000
Total fees INR 7,000
(Fee components include Tuition, Admission).

The result was scheduled to be declared on 10th January 2019. Kindly stay posted with the link below for any updates about TIFR 2019. https://www.shiksha.com/university/tata-institute-of-fundamental-research-Mumbai/tifr-gs-exam-results
You can also visit the link below. http://univ.tifr.res.in/gs2019/Test_Results/Test_Results.htm.

You can certainly take up the UPSC preparation course along with your degree studies which is called a foundation course. You will encounter a challenge to maintain the time accordingly but for a suggestion (like most of the students are doing that I am in connection with), you may go for coaching at weekend basis and manage to revise your coaching matter for that weekend slowly during the entire week keeping in sync your regular college studies, this kind of management really works well. Thousands of students are preparing of UPSC right along with their high school studies or from their UG itself, so do not lose hope and go for it.