Hello Neha , the basic idea of PI is to analyze the candidate in most authentication and progressive way  to choose the best among the rest whether it be law entrances or MBA entrance Interview. Sice entrances for them aren't good enough to judge a candidate intellectual and prospective views .

So Personal Interview round include a diverse questions as possible renting from the current affairs like how latest reforms affect the law and order or how you can possibly eliminate ISIL or steps to bring transparency in Collegium etc.good .They can even ask like any riddle , puzzle or something sir it's best to be as updated on current affairs as much as possible since there is no fixed syllabus for PI rounds. 

For any further query , don't hesitate to ask

Best of luck !!!