IFMR Research Associate interview questions

I applied online and was contacted by the HR to set up a telephonic interview. I was interviewed by two researchers. The questions were very technical and somewhat difficult. However, they never informed me if I had been selected, which clearly meant that I hadn't.

Short and specific interview specific to project hired for. Panel interviewed. Friendly and casual. Lasted about 15 minuted. employee referral and CV may have helped gauge the suitablity for role.