There was a panel interview in the first round, followed by a case study in specific to the role I was applying to. The second case study round also followed with a Q&A and second interview.
I applied through university. The process took 1 day. I interviewed at 3M (Singapore) in Mar 2018
Interview
Panel interview - 8 candidates and 4 interviewers
Candidates took turns answering the questions and due to the large number + some rambling responses, the total duration was close to 3h
Also included a hands-on activity where you had to work in smaller teams to build a contraption, and then elaborate on it
Interview questions [1]
Question 1
Introduce yourself
What are your strengths and weaknesses?
What was your favourite subject in school?
What do you know about 3M?
What was your CAT grade?
Tell me in 1 minute why you should get this job
Why healthcare?
Do you have a preference for division?
I applied online. The process took 2 days. I interviewed at 3M (Singapore) in Jan 2015
Interview
2 stages with 1 case study to be done. The 2nd round was to get to know about the candidate and understanding the business nature. there is no right or wrong for the case study, it was more to understand your thought process.