When faced with a licensing exam, don't struggle with test anxiety! Use the question below and others from our Exam Study Guide series to properly study and prepare for exam questions. Take a look at this sample wastewater treatment licensing question along with an explanation of the correct answer.Sample question:What condition is present when oxygen is absent and nitrate is used as an oxygen source?A) Anoxic
B) Anaerobic
C) Aerobic
D) EndogenousAnswer: This condition is in contrast to aerobic (with oxygen) or anaerobic (no oxygen and nitrate) conditions. The answer is A, anoxic.Source: WEF MOP11 20-57About the author
Rick Lallish is the Water Pollution Control program director at the Environmental Resources Training
