i got 89.79 percentile in JEE main. can i get admission in bihar govt engineering college. my all india OBC ranking is 33,597.

First of all congratulations for your success in JEE.
With your rank and your category you can get into the following government engineering colleges in Bihar :
(1) National Institute of Technology,Patna
(2) Darbhanga College of Engineering, Darbhanga
(3) Bhagalpur College of Engineering, Bhagalpur
(4) Loknayak Jai Prakash Institute of Technology, Chhapra
(5) Nalanda College of Engineering, Chandi
(6) Bakhtiyarpur College of Engineering, Patna
(7) Purnea College of Engineering, Purnea
(8) Motihari College of Engineering, Motihari
(9) Saharsa College of Engineering, Saharsa
(10) Shershah College of Engineering, Sasaram
(11) Rastrakavi Ramdhari Singh Dinkar College of Engineering, Begusara..
(12) Supaul College of Engineering, Supaul
(13) Katihar College of Engineering, Katihar
(14) Sitamarhi Institute of Technology, Sitamarhi
Hope this helps you!