Hello Jeswin

You have secured a rank of AIR 46000 in NEET UG 2019. As you belong to Roman Catholic category according to previous year cutoffs of St. Johns Medical college you have chance of gettig admission into this college. However you have not mentioned for which category of Roman catholic you are eligible. However The last year admission i.e. 2018-19 data of Roman catholic category is as follows (closing cut off ranks)

RC religious sisters           529210

RC christian Tribal            313186

RC christian Dalit             169480

RC local north indian        239739

RC karnataka State          116004

RC all india open merit      44806

However cutoffs are subjected to cange every year based upon question paper level and no of studens appeared in the exam. For more information kindly go through the link given below

https://img1.wsimg.com/blobby/go/3256ce8b-8a45-4bdb-b1d3-0d3e1c041732/downloads/MBBS%202018.pdf?ver=1560401465811