I applied through university. The process took 1+ week. I interviewed at Indian Oil Adani Gas (Belgaum) in Feb 2017
Interview
A written test was conducted across colleges located in North karnataka. The test consisted of aptitude, verbal and technical. The technical questions were from topics like basics, thermal(30%), refrigeration(30%),manufacturing(20%) and design(20%).17 students were shortlisted for GDPI.
GD topic was demonetisation. 10 of them got through this round.