If crl rank is 45000 what is the corresponding rank in OBC category
It is simple the ratio between the two ranks that is the general rank or CRL rank and the OBC rank is 4:1. That is your OBC rank is four times less as compared to the general rank.
The above mentioned CRL rank is 45000 then the OBC rank will be 45000/4 which is nearly 11000 to 12000.
Good luck