I wouldn't say there was a difficult question. But their were big ones. "What do you know about pharmacy?" is probably the biggest one they asked.
1. I made sure I knew the formalities of interviews (dress attire, handshakes, eyecontact.)
2. I did research on the school and on pharmacy current events. I made sure I knew what pharmacy was all about.
3. I'm not the type who is good at spontaneous speeches and the like. Therefore, I came up with possible questions, so that I could answer them extemporaneously.
4. Know why you want to pursue pharmacy (Most important!)
What impressed you positively?
I liked how we got to meet other candidates for the school of pharmacy. (We were in groups of about 15). Having the information session and question session with pharmacy students, really calmed us down before the interview.