Some of the questions asked during my tech interview in Feb 2012 :
1. Which is the only continent CX doesn't fly to?
2. What is the population of Hong Kong?
3. How do you distinguish between a cold front and a warm front?
4. What causes the formation of a typhoon?
5. Latitude and longitude of Hong Kong.
6. Identify the aircraft model displayed, what engine is mounted on it.
7. In which year was CX founded? The first aircraft flown and its name.
8. Mental calculation based on rate of descent. Another one based on TRK and HDG.
9. Wing dihedral and sweptback.
I can't recall anything more than that.