Primary Teaching Question:

Being a preschool teacher is not an easy job. And not everyone can be a preschool teacher. There has to be some aspects in yourself that made you desire such a position and that will make you the perfect candidate for a preschool teacher job position.
One of the most important aspects is that you should have a natural love for kids and enjoy helping them and being surrounded by them. There is no place for irritability, intolerance or impatience in the job and life of a preschool teacher. These are the concepts that you should bring out in the interview answers, with perhaps a brief, revealing anecdote or two.