Banaras Hindu University

The admission in IITs in M.Sc. courses are based on ranks obtained in IIT Joint Admission Test for Masters (JAM) conducted by IISc Bangalore.
From the Academic Session 2004-05, IITs started conducting a Joint Admission test for M.Sc. (JAM). The objective of JAM is to provide admissions to M.Sc. (Two Years), Joint M.Sc.-Ph.D., M.Sc.-Ph.D. Dual Degree, and other Post-Bachelor Degree Programmes at the IITs and Integrated Ph.D. Degree Programmes at the IISc and to consolidate Science as a career option for bright students across the country. JAM has been established as a benchmark for the undergraduate level science education in the country.
Eligibility requirements of IIT JAM : The candidates who qualify in JAM 2021 shall have to fulfill the following Eligibility Requirements (ERs) for admissions to IITs.
All candidates admitted through JAM should have a Bachelors degree. In the qualifying degree, the aggregate marks or CGPA/CPI without rounding-off (taking into account all subjects, including languages and subsidiaries, all years combined) should be at least 55% or 5.5 out of 10 for General/OBC (NCL)/EWS category candidates, and 50% or 5.0 out of 10 for SC/ST and PwD category candidates.
So from above the 55% is the minimum requirement for General/OBC (NCL)/EWS category, while 50% for SC/ST candidates. Hence you are not eligible.