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 that both are government college. IET lucknow is best government college in upsee and getting cse adds feather to your luck. On the other hand AMU is not bad but if you're interested in chemical engineering then you can take admission else if you were to take my opinion then IET lucknow is better. So choose smartly considering my views. 

Good luck for your future :) 

Feel free to ask if you have any further queries