Buddy you did not mention for which post you want to apply in Bihar Public Service Commission here I will gather so that you can apply.

Here I’m telling you process to get the online application form

Drive to official site of Bihar Public Service Commission
Home page will open there look for section of online application
Which is at middle left hand side page then click on it
A new page will open which looks like this
There you can get details easily

Bihar Public Service Commission, online application form



At present I have this latest information issued by them
Important Notice: 56th-59th Common Combined (Main) Written Exam - Regarding applications by candidates for correction of Online Data.
Interview Program: For the Post of Sr. Scientific Officer, Photo Branch, Physics Division under Home (Police) Dept. (Advt. No. 08/2015)
Important Notice: Interview of Assistant Professor in Chemistry - Revised Schedule for Candidates appearing between 11th-16th July, 2016. (Advt. No. 66/2014)
Important Notice: Regarding Admit Cards and its download procedure for 56-59th Common Combined (Main) Written Competitive Examination.
Examination Program: For 29th Bihar Judicial Services (Preliminary) Competitive Examination. (Advt. No. 01/2016)
Examination Program: For the post of Lecturer of Civil Engineering/Technology in Govt. Polytechnic/Govt. Women Polytechnic Colleges. (Advt. No. 36/2014)
Examination Program: For the post of Lecturer of Mechanical Engineering/Technology in Govt. Polytechnic/Govt. Women Polytechnic Colleges. (Advt. No. 35/2014)
Examination Program: For the post of Lecturer of Electrical Engineering/Technology in Govt. Polytechnic/Govt. Women Polytechnic Colleges. (Advt. No. 34/2014)
Interview Letters: For the post of Assistant Professor (Chemistry) in various universities. (Advt. 66/2014)
Important Notice: Invitation of Objections to Answers (by Question Setters) of Assistant Conservator of Forest (Written) Competitive Examination. (Advt. No. 85/2014)
Answer Key (by QS) :: General Knowledge :: Forestry & Environment :: Booklet Series A, B, C, D.
Important Notice: For the post of Lecturer in Govt. Training Colleges. (Advt. No. 02-04/2016 & 06-08/2016)
Examination Program: For 56th-59th Common Combined Main (Written) Examination.
Important Notice: For the post of Sr. Scientific Officer, Photo Branch, Physics Division with Home (Police) Dept. (Advt. No. 08/2015)

Address:-
Bihar Public Service Commission
15, Jawahar Lal Nehru Marg, Bailey Road, Patna, Bihar 800001

Phone:-
095768 95386