Water Treatment Operator Exam Class C and D Questions and Answers

Water Treatment Operator Exam Class C and D




Water Treatment Operator Exam Class C and
D Questions and Answers
Question 1
Always _____ a piece of equipment before attempting a repair
Correct Answer
Lockout/Tagout



Question 2
Never Tamper with a ____ on a chlorine cylinder
Correct Answer
fusible plug



Question 3
Chlorine gas is _____ times heavier than air.
Correct Answer
2.5



Question 4
one volume of liquid chlorine produces ____ Volumes of gaseous chlorine under
pressure
Correct Answer
460



Question 5
Always Change the ______ when changing a chlorine cylinder
Correct Answer
Lead Washer




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, Water Treatment Operator Exam Class C and D




Question 6
Always first _________ to a chlorine cylinder before changing the cylinder
Correct Answer
turn off the valve



Question 7
Always make certain 150-lbs Chlorine cylinders are stored _____
Correct Answer
Upright and secured



Question 8
When transporting a chlorine cylinder always use a _____
Correct Answer
Hand truck



Question 9
Never move a one-ton cylinder over a ____ or one that is ____
Correct Answer
full one-ton cylinder , online



Question 10
Chlorine leaks can be detected with ______
Correct Answer
a 10% ammonia solution



Question 11
Chlorine leaks tend to leave a ____ at the spot leaking
Correct Answer
green/yellowish color




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