Jacobs Air Quality Graduate interview questions

Applied in June 2018, got offered an interview in September. The interview consisted of 5-6 competency questions and then a written exercise where I had to work out the total NOx emissions on a particular road for a certain amount of cars. It was disappointing that they only decided to inform me that I had been unsuccessful after I had emailed them about the outcome, and even this was a generic email without any opportunity for feedback.