oops sorry i misunderstood the question...lol
okay what you could ask:
What does the job entail?
Possible additional tasks?
Do not bring up salary or holidays untill the very very end, or wait for them to mention it. It givesa horrible impression. Try to be urself, on time and very organized. Possibly wear something adaptable to the working environment. Dont go in a suit and tie, nor as if you were just at a rodeo.
A good question to ask is how the company helps to develope it's employees, through training and so on, for example, if you show potential will they offer you supervisor or management training. It will show that you are keen to do well for them and keen to be invested in. That sort of question shows that you don't just want a job (even if it's the case) showing a bit of ambition never hurts.
Ask questions that show you are eager to work and are interested in the company and have done some research on it. You could ask questions like, "what is the typical work week, should I be expecting over-time?" "when can I expect to hear from you?" http://funadvice.com/r/155jb2jr6pa
well you can generalize:
Why do you want to work here?
Past job experiences?
Ever been arrested?