Can u please suggest me some books to read.. thank u

As of Now I don't know any such book which can help You to cover the whole syllabus Because Its subjective and Judges many aspects having a vast syllabus, You can find some books which cover the following Topics would be sufficient:Political Theory and ThoughtComparative Politics and Political AnalysisIndian Government and PoliticsBureaucracy and Public AdministrationInternational Relations

If u don't mind me asking, r u also from JNU ?

No IIT

I heard exam will be in online now, doesn't it mean MCQ format for each and every subject ?

Yes, You heard Right, FRom this Year onwards JNU Entrance exam will be online, I did not mention that because official Notice is released Today i.e. 23Oct 2018.