Yessssssss

After provisional rank list is displayed everyone has chance to change errors like 10 th marks caste certificate & validity etc at that moment u will get a  chance to  change category but u have to make sure u have all the documents required or mentioned by state govt my suggestion is make Caste Certificate is most imp doc but other caste quota demands for Caste validity certificate so u have to produce check for u r caste as well

After all this process final rank list is displayed and then college allocation process starts accordingly

All the best and do well