If I'm not mistaken, this has been brought up in another thread. Probably you can refer to them.
Anyway like what majority have said before, there isn't any standard set of questions and they can range from introduction to what will you do when you're in a lift etc.
But of course, the first round is relatively generic. Introduction, favourite movie etc. It's not a matter of how well you can answer but rather how you carry yourself off infront of the panel. I guess most of us have went through this. Don't be arrogant and be observant even when others are presenting.
In management panel, anything under the sun can be discussed. Role play if needed so just be prepared, learn the history about SIA, everything concerning the job and possible questions which they might ask. What questions you may ask, and that really boil down to what you have said. You don't expect ABC here.
Preparation is good but don't over do it. Learn to make reference to what you have said, and of course smile and be humble. SIA is all about team play and they do not want individualistics. I hope you can gather from what I've said.
Last but not least, this might hurts but don't be expected to be spoon fed most of the time. The main thread about SIA has all the necessary information you need. They might deviate a bit but definitely not to the point of irrelevance.
M
I think some senses just don't make sense at times. 
HEY LISTEN DONT MESS WITH THE WRONG PERSON!