Class "C" Water Exam

Calcium Hypochlorite A common chemical used in the disinfection of a small water supply isA Cross Connection A physical connection between a potable water supply and a house well would beDemand The amount of Chlorine in mg/L that is used by reacting with iron, organics, or bacteria is called? Greenish Yellow colour Heavier than air Pungent, Penetrating odour Corrosive All of the following are Physical characteristics of Chlorine gasSolution feed pump Which of the following would be considered a part of a hypo-chlorinator system? Flow measuring device According to state requirements, all public water supply wells should be provided with a raised concrete sealing block, screened vents andThe difference in static and pumping levels The drawdown of a water well is determined byIf it is more acidic or base The pH of water indicates0-14 The pH of water is expressed by a scale of numbers ranging from7.0 Water that is considered neutral is expressed on the pH scale atUse of an approved, sterile container Which of the following is a required step in collecting a routine distribution sample for bacteriological testing? Turbidity Sand filtration will remove which of the following from surface water?