Are you applying for immigrant Visa for a Spouse or Fiancé(e) of a U.S. Citizen?
Visas K-1, K-3, IR1, CR1 or Marriage Based Green Card?

This app has more than 100 possible interview questions. You can read it, try to match your answers with your fiancé(e) or spouse and prepare for the final step of your visa process.
 
Towards the end of the fiancé(e)/spousal visa process, the alien fiancé(e)/spouse will be required to attend an interview, where he or she will be asked a series of questions by a consular officer at the U.S. embassy or consulate.

The interview takes place in a private room and usually lasts less than ten minutes. Your U.S. citizen fiancé(e)/spouse may accompany you to the interview for moral support, but only if the embassy rules allow it.

The officer uses predictable procedures, which could help you be ready for what to expect. Reading some of the questions will also help you have a more successful interview.