1st round was an online exam, it was quite hard most of the people were removed in 1st round only.
2nd round was a personal interview, a panel of 2 was present. both technical and hr questions were asked. the interview was easy cause mostly they wanted to know if you are ok with location, daily travel and if ok with working with shifts. Many times they asked about higher studies cause my grades are very good.
General tip: if you have a good cgps/% you generally have a advantages over others in interview.