Hey priya,

GEC is basically the generic elective courses which consists of number of subjects in it. There are many options given to every course and are all different. You may get to chose according your preference once you enter the college. As soon as you join the College you'll be given the orientation about the GEC subjects for a better idea and understating . So you don't have to worry right now. Just focus on the admission procedure rest of these things will be done once you join the College .

Hope this works.

Good luck !