Diksha Software Engineer interview questions

First we gave the test where 22 of us were selcted and we have to give three tech interview and 1 hr interview.It was a 1 hour interview round where they asked me questions from Stack,Hashmap,SQL,Oops,Sorting techniques.I anwered almost 90% questions but was not selcted for the next round only 4 students was selected for the next round.