Dear Aspirant 

First of all Congratulating you on your nice performance that you deserve both of the nice college and I would like to tell you mechanical engineering has more job opportunities, more average as observed in placement of fresher student and even has more diversity, so if you were to take my opinion then I would suggest mechanical engineering better but if you are interested in chemical engineering then you can do better even there and is not that bad. 

Good luck for your future :) 

Feel free to ask if you have any further queries.