Welcome to the 25 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
What is the sample size for lead and copper analysis?
2.
Where are water meters usually installed?
3.
What type of personal protective equipment should an operator wear when handling hypochlorite?
4.
What two chemicals cause water hardness?
5.
What is the term used for the remaining free chlorine in a water system after the chlorine demand has been met?
6.
Even during a fire event water pressure in a distribution system should never be allowed to drop below?
7.
What is the main reason for the poor accident record of operators?
8.
An autoclave will sterilize at
9.
What is one of the most important daily functions for a manager of a water distribution system?
10.
Permit required confined space entry requires a chest or full body harness and a retrieval line.
11.
When gas chlorinators operate at a high rate of withdrawal, what may happen?
12.
When employees are working in a trench that is 5' deep or more, that must have an adequate means of exit within 25' like?
13.
What element is found in all acids?
14.
Valve opening and closing is the main cause of hydraulic transient in a water distribution system.
15.
What describes the discharge rate of a piston style pump?
16.
A possible cause of a complaint of cloudy water is?
17.
If a bac-T sample is positive, repeat samples must be taken
18.
The fusible metal plugs on chlorine containers are designed to melt at what temperatures?
19.
What is the electronic standard range?
20.
What kind of gas can cause lung and skin irritation?
22.
A portable ladder must extend how many feet above the upper surface of an excavated trench?
23.
A 1 ton cylinder filled with chlorine weighs approximately?
24.
The maximum chlorine withdraw rate from a 1 ton cylinder is?
25.
Identify which is a Cross-Connection hazard in a drinking water system.
