Welcome to the Water Treatment Operator Practice Test.
Choose the best possible answer to the question.
1.
What is the usual effective pH range of iron salt coagulants?
2.
In which state are Giardia most vulnerable to inactivation through disinfection?
3.
What does the saturation point of calcium carbonate primarily depend on?
4.
During daylight hours, algae growth in a reservoir will do what?
5.
What does the operator use to adjust the amount of liquid or gas delivered to water?
6.
What does the pulsating energy in a pulsator clarifier help to do?
7.
Records of sanitary surveys must be kept for?
8.
What adverse effects does the secondary contaminant manganese have?
9.
Most totalizer meters at treatment plants are commonly
10.
Coagulation is a chemical and physical reaction that converts?
11.
Test results from a multiple tube fermentation test for coliform bacteria are expressed as MPN (most probable number) per 100 milliliters, the number is determined from?
12.
The structure Diatomaceous Earth filters media is applied to is called?
13.
With coagulation reactions when alum is used, the specific insoluble floc formed is a precipitate of?
14.
The action level for copper is 0.015 mg/L.
15.
Why has magnetic ion exchange resin been developed?
16.
What parameter must be much better than conventional treatment basins in basins using tube and plate settlers?
17.
Which of the following composes the majority of scale in pipes?
18.
If the natural fluoride content of raw water is variable, the concentration of the raw water should be measured?
19.
What is the term that defines the calculation of a water plants physical property due wear and tear?
20.
Where does most of the carbon dioxide in groundwater originate from?
21.
Fluoride concentration above what mg/L will likely cause teeth to become pitted?
22.
One ton chlorine containers are equipped with two valves, one for liquid and one for gas.
23.
A surface water treatment plant should have at least how many filtration beds?
24.
Salts, Bases, and Acids lacking carbon are organic compounds.
25.
What would have the least impact on the efficiency of copper sulfate?
