bp Chemical Engineer interview questions

BP has a career fair in my university. I had an on-campus interview for one and half hours. Most of them are behavior questions. After two weeks, I was invited for the on-site interview. May questions were repeated by different interviewers such as challenge, safety, and leadership. They did not ask any case study questions. The presentation is about 45 minutes and people asked about technical questions.

Completed a long online form with lots of skills based questions, such as "Write about a time when you used such and such a skill"... Then was invited for a day of interviews - one interview was more general about interests and skills, one interview was technical so used my engineering knowledge.