Welcome to the 50 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
If sodium hypochlorite comes into contact with the skin or eyes, the area should be flushed with water for at least 15 minutes.
2.
What does hydrogen sulfide smell like?
3.
What is the typical strength of calcium hypochlorite?
4.
With permit entry confined spaces, who is responsible for terminating entries?
5.
The maximum chlorine withdraw rate from a 1 ton cylinder is?
6.
What health effect category refers to an organic chemical that is a known carcinogen?
7.
What is the sample size for lead and copper analysis?
8.
Why should a centrifugal pump never be run empty?
9.
What device changes the alternating current to direct current by allowing the electric current to flow in one direction but blocks flow in the opposite direction?
10.
The pulling or stretching of a water pipe without breaking is known as its?
11.
What will a flexible diaphragm coupling compensate for in angular movement?
12.
What is a prescriptive water right?
13.
The most effective means of reducing atmospheric hazards in a confined space is?
14.
What is the greatest problem for most water distribution shut off valves?
15.
The upper layer in a reservoir is the?
16.
What element is found in all acids?
17.
Calcium hypochlorite comes in what form?
18.
If using free chlorine, the dosage and exposure time to disinfect a water well is?
19.
When employees are working in a trench that is 5' deep or more, that must have an adequate means of exit within 25' like?
20.
Push joints can be used if the pipe must be pushed at an angle?
21.
What is the measure of a materials opposition to the flow of electrical current?
22.
What carcinogenic disinfection by product may be formed with chlorine is used to disinfect drinking water when organics are present?
23.
What gauge is used to perform hydrant flow testing?
24.
An approved backflow assembly that can be used to prevent backflow and backsiphonage is?
25.
What type of polar bonds are between the hydrogen atoms and the oxygen atom in water?
26.
Which of the following type of pipe is most prone to sliding out of a push on joint if it is not firmly in place?
27.
What is a part of the well construction that is used to protect the aquifer, that is space between the drill hole and the well's protective casing?
28.
What can be devolved by measuring the pressure along a pipeline?
29.
A dry barrel fire hydrant is used to?
30.
What are the areas within a traffic zone?
31.
A water source that flows continuously at all times of the year is called?
32.
How does OSHA define a competent person?
33.
Chlorine applied minus chlorine remaining is?
34.
What type of oil should not be used to lubricate bearings because it forms acids as it begins to break down?
35.
Records on bacterial analysis should be kept for a minimum of?
36.
An underground layer of water bearing permeable rock is?
37.
The limnetic zone of a lake is?
38.
The fusible metal plugs on chlorine containers are designed to melt at what temperatures?
39.
How many Milliliters (ml) are in 1 gallon of water?
40.
A pro of chloramines is?
41.
The proper emergency kit for a 150lb chlorine cylinder is?
42.
The profundal zone of a lake is?
43.
What is the equation for Ohm's law?
44.
Water distribution system piping should be rated to withstand how many times higher than normal operating pressure?
45.
What does MCLG stand for?
46.
The total dynamic head at which a pump must operate at is the sum of the static head and the head due to friction loss.
47.
When using Chlorine tablets to disinfect a pipeline during installation, the tablets should be placed where?
48.
An illness in infants known as methemoglobinemia, or blue baby syndrome, is attributed to?
49.
What type of map should not overlap each other?
50.
Some water storage tanks have aviation warning lights on them. The FAA regulations require the bulbs to be replaced before they reach what percentage of their normal life expectancy?
