The questions were simple but too many. They were basically based on DI, logical reasoning, grammar and quantitative aptitude. In the test, starting few questions were time consuming and hence I started solving it from back..and may be that's why I could complete it on time :)
PS: There were no coding related questions!

So then they shortlisted 24 candidates out of 100-110 students appearing in the exam.
This basically took this round on case studies, situation based questions, whether I knew anything at all about forecasting and of course about my internship (which by the way was in core) and what exactly I did in my intern and how was my experience.
Also, it was a friendly panel which made me quite comfortable while giving my interview.

They shortlisted 14 students out of 24.
In this round they asked me why I wanted to join O9 solutions, any weaknesses, about AI based technology, why my pointer was not so good, what all I did in college, team work experience and what difficulties I faced leading a group and how I managed it, what I did being the cultural secretary of my department and how I managed all this with my academics/personal life.

Your body language, eye contact, firm handshake, proper dressing and a smile is very important when you go for interviews.
Practice mock interviews with your friends and boost your confidence day by day while talking to them. Don't make a big deal about the interview stuff, relax and just be yourself..they are humans too they won't kill you if you go wrong XD.. you are going to make mistakes and they are going to correct you... well that's how you learn something... that's the circle!
In the end just tell them what you yourself would like to hear if you'd be interviewing someone!
And yes, not every IT related company needs you to have prerequisite knowledge of coding! I didn't have either :!
All the best!
Remember the best opportunity is waiting for you :)