From memory and bering in mind that they may do things differently where you are living the questions tend to be as Bro Alan has stated.Do you believe in a Supreme Being? (In most Constitutions this is mandatory).
What do you know about Freemasonry? (Advice - do not come across as too clever in answering this one. I was very careful when asked this as I had read a lot about Freemasonry over the years but didn't wish to come across as a "clever cloggs" when I answered.)
Do you have any relatives or friends who are/were Freemasons?
Why do you wish to become a Freemason?
What do you hope to obtain from being a Freemason?
Do you have a criminal record? (In some Constitutions this question is on the application form).
Will you be able to afford the time and money involved ?
Is your wife/partner aware that you wish to become a Freemason? Are they at ease with this ?
These are the fairly standard questions that I can remember from an UGLE Lodge, but there might be others which relate to your own Lodge or Constitution.
Good luck in the Interview. Bear in mind that the Brethren interviewing you actually want the Inteviewee to pass not to be rejected . I have never heard of anyone being asked a "trick" question to trip them up. Also some Committees will, after deliberation tell you the result. In other Lodges they ask the Secretary to write to you so not hearing on the night is not a sign of problems with your applciation.