Dear student,

Most of the government jobs requires entrance exam ranks. Based on the ranks or score obtained in Entrance Exams government jobs are allocated. There is lot of process for it to happen. I don't think so Government jobs will be offered by Goverment Colleges because Government Organizations won't come and give Campus Placement opportunities to students mostly. But DRDO, ISRO, etc have  offered Campus Placements for Top Institutions like IIT, IISc etc. But now even they take candidates based on GATE Rank or special entrance exam Rank.

Hope this information helped you.

Good Luck!!