Dear student

As you mentioned that you are from st category .your percentile is not enough for any nits or good college.as only 20 percentile of class 12 th board is considered  ,you have to score really well in the JEE mains examination so that you can get any government college bcz your percentile is too low ,these days getting a government college in this percentile is not possible but you can wait for the spot round . if you are lucky enough only then you can get a government college otherwise chances are low in your case.

Hope this will helpful.thanks