What do you know of this company?
Why did you apply to this company?
What fleet/type/engines/routes does this company have?
Have you had any incidences/accidents?
What is the difference between a centrifugal and axial compressor?
Advantages/Disadvantages of the above?
Given a whiz wheel and asked to solve questions on it.
Asked RoD calcs. ie 5x profiles, 3x profiles and so on.
Where do you see yourself in 5/10 years time?
Do you want to be Chief pilot?
How will deregulation affect this company? Slot in oil prices/dollar/pound exchange rate etc.
What is the chief pilots' name?
Who owns this company?
What is the company's history?
Where have you flown?
Why did you start flying?
What do you know of CRM?
Have you had any CRM issues?
What do you think of female pilots?
Are you planning to have any children? (I couldn't believe I was asked that.)
General knowledge type questions, pertaining to IFR operations. eg, "when can you descend below MDA" etc.
What has been your greatest achievement and why?
Why did you leave your last job?
Do you mind us calling your references?
What is this company's main competitor?
What do you know of an FO's role?
Can you handle being an FO for "x" years?
Can you handle living in "x" on an FO's wage?
Are you a member of a union?
All of these questions I or friends of mine have been asked in interviews. Jobs ranged from bush operators to international airlines.
Hope this helps.