hii ,

according to your rank in jcece you have a slight chance of getting B.I.T sindri which is the top college in jcece you can expect to get a production branch or chemical or bio technology . if you are have any category rank then you have a higher chance of getting the college or you can also expect higher branch in it .

for more colleges through jee mains you can use the jee mains college predictor - https://engineering.careers360.com/jee-main-college-predictor?ici=cp-listing_engineering&icn=JEE-Main-College-Predictor