It was puzzles based and not much technical questions from core field. They will make you feel very comfortable. Simple puzzles will be asked to solve on spot. If you can't solve they'll also provide hints
Aptitude round which is mostly of aptitude and technical round is mostly of solving technical problems that will be of logical and technical and HR is of general HR questions like where you studied, why zifo and your past experience
I applied through college or university. I interviewed at Zifo RnD Solutions
Interview
They asked introduction and asked questions from that. Then directly asked logical questions. Ten to eleven questions where asked. We need to explain the question we understood as well as the answers also
Interview questions [1]
Question 1
Now it's 9:30 am what will be the time after 23992 hours