Siltronic Process Engineer interview questions

2 part interview, held on same day. 1) Technical, logical test: consist of 5 case studies and 2 page logical test, to be completed in 1hr. Quite unfair that candidates have to complete it in the staff canteen - noisy environment, same paper given to experienced/non-experienced candidates. 2) Followed by interview with hiring team: Tough interview. Tiring.