No trick questions, they are just trying at ascertain your commitment and enthusiasm. Just be your self, and be truthful, and try and enjoy the opportunity.
It won't be an hour long grilling of the entire easyjet fleet, and what type of coffee they serve. More a chat about you. What you enjoy doing, and what you are like.
Technical stuff can be taught. Personality cannot (although I've heard brainwashing can help
).