Madhuresh Prasad, J. – Heard learned counsel for the petitioners, learned counsel for the State, learned counsel for the Bihar Public Service Commission ( for short ‘ the BPSC’) and learned senior counsel for the intervenor respondents.

2. The petitioners before this Court are applicants in response to four advertisement Nos. 01 of 2019, 02 of 2019, both dated 08-03-2019, and advertisement Nos. 03 of 2019 and 04 of 2019, both dated 13-09-2019, issued by the BPSC inviting applications for appointment to the post of Assistant Engineer (Civil, Mechanical and Electrical) in the different departments under the Government of Bihar. They participated in the selection process, which was conducted, as per Bihar Engineering Service Class-II Recruitment Rules, 2019 (Recruitment Rules, 2019 for short). It is the petitioners’ case that at the time of advertisement the Rule did not prescribe any relaxation of minimum age criteria; or for grant of any weightage/ preference for previous work experience as contractual employees. The written examinations were conducted by the BPSC on different dates for applicants under the four advertisements. Merit lists dated 15.06.2022, 22.06.2022, 19.07.2022, we