Hi Steve,
Usually they are suppose to ask yes/no questions on your form i-485. However, this is USCIS you can expect anything from them. Technically they are not suppose to ask you anything related to abuse. If they do you have all the rights to ask for supervisor. Just go back few pages of this thread someone had his/her interview not long ago. He/she was asked only yes/no questions. Also review Sandra's posts on VAWA threads you will get clear picture of interview process. Good luck!