Of course interviews are mainly about you answering the questions they put to you, but at the end of your allotted interview time, the questions that really matter most are yours. You should hope to hear the interviewer ask you:

Have you any questions?

But even if they dont ask, you should grasp the opportunity and say:

Do you mind if I ask a couple of questions?

However you must be careful when planning what questions youre going to ask, and make sure that they are not ones that you should already know the answer to because its been covered in the interview.

Try to make sure that you ask questions that are relevant to the job. You could ask things like:

Is this a new position?

Who would I be responsible to?

How many other people do a similar job?

When did the last person leave this job? (And why?)

When will I know the result of this interview?

What opportunities are there for progression or further training?

Do you have time to show me around the area where I will be working?

Is there anything else that I can tell you about my experience or background?

And the most important if you can ask it is:

"Did I answer all your questions fully?"

If they do have any reservations, this just might bring them out and let you have another shot at giving a better answer.

You probably also want to know about pay, benefits and holidays too, but now is not the right time to ask and its important not to ask too early. Youll get a chance when they show theyre interested in you for the job.

If they covered all the points you were going to ask :

Try paying the interviewer a compliment:

I think youve covered all the points I was going to ask you about.

I wanted to know about the department structure and the systems that you use, but you have covered all those areas, thank you.

Show that you have taken an interest in the company:

I read that you have ten outlets in Yorkshire. Are you intending to expand any more during the next year?

Try for the opportunity to summarise for one last time why the interviewer should offer you the job. This means that you will leave on an upbeat note with your skills and experience the final things that they remember about you:

Could I summarise why you should seriously consider me for this position?

Interview questions are not only your best leads because they let you know what is important to the interviewer, but your interview questions let them know you are interested.

It also means that the interview doesnt just fizzle out but ends positively.