Hello Student ,

The qualifying percentile to write JEE Advance exam will be released after the JEE Main session 2 . It usually given in the final result . If we check it from last year then yes you are eligible to write the JEE Advance exam . The last year qualifying percentile to write JEE Advance for SC category was 51.9776027 .

Hope this answer helps you .
To check admission chances bases on JEE Main session 1 percentile in NITs , IIITs and GFTIs use JEE College predictor . The link is given below -
JEE College Predictor