Sciences
14 QUESTIONS
Q1. What is used in pre-treatment of water to remove large objects?
A) Bacteria
B) Air
C) Oil and Grease
D) Screen
Q2. Name two disinfectants that could be used to get rid viruses and bacteria :
A) Chlorine and water
B) Chlorine and ozone
C) Ultraviolet light and Air
D) Ultraviolet light and Water
Q3. What is the second treatment that water goes through called?
A) Disinfection
B) Pre-treatment
C) Secondary treatment
D) Primary treatment
