Class D Water Operator EXAM QUESTIONS AND ANSWERS 100% CORRECT!
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Course
Class D Water Operator EXA
Institution
Class D Water Operator EXA
What are some physical characteristics of water? -ANSWER Temperature, turbidity, color, taste, odor
What are some chemical characteristics of water? -ANSWER Hardness, pH, solids, and gases
What is turbidity? -ANSWER the amount of suspended matter, such as clay, silt, organic matter, and micro...
, Class D Water Operator EXAM
QUESTIONS AND ANSWERS 100%
CORRECT!
What are some physical characteristics of water? -ANSWER Temperature, turbidity,
color, taste, odor
What are some chemical characteristics of water? -ANSWER Hardness, pH, solids, and
gases
What is turbidity? -ANSWER the amount of suspended matter, such as clay, silt,
organic matter, and microorganisms in water
T/F Water is never found pure in nature. -ANSWER True
Is turbidity more of a problem in groundwater or surface water? -ANSWER Surface
water
A system's filtered water must be _______ Nephelometric Turbidity Units (NTU) or less
in at least 95% of the measurements taken each month, and no sample can exceed
_____ NTU. -ANSWER 0.3
1
T/F True color is dissolved in water (in solution) and cannot be removed by filtering. -
ANSWER True. Tea in water is an example of true color.
Suspended color is called _______ color. -ANSWER apparent
Color above ______ units is objectionable in a public water supply. -ANSWER 15 units
A scale called the ________ measures odor. -ANSWER Threshold Odor Number (TON)
Odor greater than a scale of _______ is undesirable. -ANSWER 3
Taste and odors in water result from _______, bacteria, decaying organic matter,
gases, and chemicals such as manganese, zinc, copper, iron, magnesium, sodium, and
potassium. -ANSWER algae
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