Babasaheb Bhimrao Ambedkar University (BBAU), Lucknow

Admissions are closed now. The forms are made available in the month of March.

Both Hindi & English medium.

Sorry, M.Sc is not offered in BBAU. To know about the courses offered, refer the link: https://www.shiksha.com/university/babasaheb-bhimrao-ambedkar-university-amethi-satellite-campus-lucknow-51351/courses

First, you have to graduate and yes, you are eligible after the completion of your graduation because graduation in any subject can apply for Master's degree in library science.
Good luck.

Basic eligibility to apply for M.Sc. in Forensic Science and Criminology at Babasaheb Bhimrao Ambedkar University, Lucknow is that candidate should have completed their graduation and Must have completed graduation in any discipline of Life Sciences/Medical Science/ or other allied subjects like Physical Science Biotechnology/ Microbiology/ Biochemistry.
Eligible candidates need to appear for Entrance Test conducted by the Babasaheb Bhimrao Ambedkar University. Interested candidates can apply online with required information. Regards.

Every university has its own entrance or take students through CAT or MAT.

The minimum percentage required for B.Tech or BBA admission is 50% and above. Some colleges keep the cut-off as 60%.