As your education interest is engineering ,therefore here I am providing you the top colleges in Chhattisgarh for engineering .Obviously the top two colleges for engineering are 

1.NIT RAIPUR   and   2.IIT BHILAI 

Now excluding these two colleges here I am providing you other top colleges of Chhatisgarh :

1.Bhilai Institute of Technology

2.Guru Ghasidas Vishwavidyalaya

3.Government Engineering College ,Raipur 

Best of luck!!