Welcome to the Water Treatment Operator Practice Test.
Choose the best possible answer to the question.
1.
Potassium Permanganate should be?
2.
What percentage of the air is usually converted to ozone if air is used to generate ozone?
3.
A chlorine evaporator maintains a water bath at?
4.
Monthly sampling results must be reported by the water purveyor?
5.
The disinfection treatment process is?
6.
What one of these would be the best chemical oxidant to use for controlling THMs formation potential?
7.
What is the most probable solution if nematodes are interfering with the disinfectant?
8.
What can be done to prevent discharge cavitation from occurring?
9.
What is dental fluorosis?
11.
What adjustments will the operator of a surface water treatment plant have to make if the raw water is very high in turbidity levels?
12.
What chemical can be added to the water system to sequester Iron and Manganese?
13.
By what factor does the hydrogen ion concentration change when the pH changes from 8.0 to 9.0?
14.
What precipitates can foul a cation exchange resin?
15.
Why do mud balls and hard spots develop in high rate gravity filters during the summer months?
16.
What does the saturation point of calcium carbonate primarily depend on?
17.
The cl2 residual in water may be determined by using the reagent?
18.
What is a universal solvent?
19.
What conditions in a gravity filter will be produced when there is a larger particle size and less dense anthracite media?
20.
A system that fails to collect water samples in their distribution system would fall under which public notification system?
21.
What factor is used to express the relative volatility of a substance?
22.
A property that is important to water treatment that is physical as opposed to chemical is?
23.
For alum coagulation of color, what is the correct pH?
24.
Protozoa are larger than bacteria which are larger than viruses.
25.
What is used for detection of chlorine gas leaks?
