ExxonMobil Intern interview questions

I submitted my CV through campus recruiting, for a software developer position. A week later I got the first on-campus interview. A day before interview, they invited all applicants for an "unofficial" dinner, where there were several recruiters from Exxonmobil. The discussed topics, were casual and all of them seemed very nice and easy to talk to. In interview, all the questions were behavioral questions, such as, in which section do you prefer to work in? How you can manage multiple responsibilities? When did you do something, which made your group members and your supervisor very interested?, etc. I received a letter from company 1 week later, that I did not accepted to the position. Based on recruiters' info. they were mainly seeking for BS (or at most MS) students, and not graduate (PhD) students. So, I think I did not have high chance to get an offer from this company.