Yes,you can get admission in government colleges but it depends on the university in which you are looking for.

DU has 65 colleges and there are atleast 15 colleges which gives admission to students who scored atleast 70% but it also depends on the course.some courses cutoff is low but some courses cutoff is high.

Ip university takes entrance for the admission.Student must have atleast 55% in 12th class. According to the applicant rank this university provide college.

Then after 12th ,IIT JEE (for engineering)takes entrance test for the admission in which the admission procedure is based on the rank not on the percentage of 12th class.