Class "C" Water Exam Questions with Complete Solutions 2023/2024

A common chemical used in the disenfection of a small water supply is- - Correct Answer Calcium Hypochlorite A physical connection between a potable water supply and a house well would be- - Correct Answer A Cross Connection The amount of Chlorine in mg/L that is used by reacting with iron, organics, or bacteria is called? - Correct Answer Demand All of the following are Physical characteristics of Chlorine gas- - Correct Answer Greenish Yellow color Heavier than air Pungent, Penetrating odor Corrosive Which of the following would be considered a part of a hypo-chlorinator system? - Correct Answer Solution feed pump According to state requirements, all public water supply wells should be provided with a raised concrete sealing block, screened vents and- - Correct Answer Flow measuring device The drawdown of a water well is determined by- - Correct Answer The difference in static and pumping levels The pH of water indicates- - Correct Answer If it is more acidic or base The pH of water is expressed by a scale of numbers ranging from- - Correct Answer 0-14 Water that is considered neutral is expressed on the pH scale at- - Correct Answer 7.0 Which of the following is a required step in collecting a routine distribution sample for bacteriological testing? - Correct Answer Use of an approved, sterile container Sand filtration will remove which of the following from surface water? - Correct Answer Turbidity Activated Carbon is used in a Surface Water Plant primarily for? - Correct Answer Taste and Odor control