Dow Environmental Health Officer interview questions

I applied on line and the next day i got a phone call from their jhb head office inviting me for an interview. I accepted and thenmthe lady says an email will be sent to me conferming the time and venue details for the interview. I got the email and attended as specified. When you get there you wait for your turn and you go in one by one. Really theres nothing out of the ordinary with the interview process, its as expected of a normal interview process.