Since some questions are timed, it is strongly recommended for you to pick a category and stick to it throughout the game, for always being questioned by the same guard, you are more likely to remember the answers which will ultimately help you complete the game at a faster speed.
Below are the answers to the questions you will be asked during the course of the game. Each question and answer is sorted by category (Not How They Appear In The Game).
All About Neopia
1. What do the Natives of Mystery Island call the stone circle at the top of the Deserted Tomb in Geraptiku?