what position did you apply for?
the interview is in three stages, first will be the dept you applied for, second is with the HR head and finally the GM questions like what can you contribute and what did you kn about C and I. just try to be focus, they might ask you questions aside your field , I mean areas like politics and the current things happening in Nigeria. the HR lady is the tough part, she always ask questions and at dsame time distract you. all the best. is a good place to be