Jio Graduate Software Engineer Trainees interview questions

I gave interview at Ghansoli for which I had appliead online. The aptitude had 3 rounds, Industry related questions, some school level Verbal and Quants each of 5 minutes containing 10 questions. Then there was Technical aptitude of 30 minutes having 50 questions of average difficulty from Java(All from IndiaBix :P ) and some general technology related questions. Out of 60 they shortlisted 7 of us because the sectional cut off for CS aptitude was 40/50.In the interview questions were asked on Technical skills mentioned in Resume and Linux(even if you haven't mentioned).I didn't understand on what basis the interviewer shortlisted just 2 of us out of 7. Either because the two of them scored highest in aptitude or because they had listed Linux OS in their Resumes. He was searching questions on internet and asking for answer LOL. He asked the exact same questions to all 7 of us and despite everyone of us having the same experience he took 2/7 for HR round further.