hey gulshan

there are a variety of courses you can pursue in DU afer class 12th pcb like bsc in chemistry ,biology,zoology,agricultural science etc

the chances of you getting a college depends upon the colleges you want to get into and the courses you want to pursue so it is very difficult to predict the college

the best way is to check the last year cutoff which give you the overall idea .here i am providing you the link so that you can check it by yourself

http://www.du.ac.in/cut-off.html

best of luck