Water Treatment Operator Exam Class C and D UPDATED ACTUAL
Questions and CORRECT Answers
Question: Always _____ a piece of equipment before attempting a repair
Correct Answer: Lockout/Tagout
Question: Never Tamper with a ____ on a chlorine cylinder
Correct Answer: fusible plug
Question: Chlorine gas is _____ times heavier than air.
Correct Answer: 2.5
Question: one volume of liquid chlorine produces ____ Volumes of gaseous chlorine under pressure
Correct Answer: 460
Question: Always Change the ______ when changing a chlorine cylinder
Correct Answer: Lead Washer
Question: Always first _________ to a chlorine cylinder before changing the cylinder
Correct Answer: turn off the valve
Question: Always make certain 150-lbs Chlorine cylinders are stored _____
Correct Answer: Upright and secured
Question: When transporting a chlorine cylinder always use a _____
Correct Answer: Hand truck
Question: Never move a one-ton cylinder over a ____ or one that is ____
Correct Answer: full one-ton cylinder , online
Question: Chlorine leaks can be detected with ______
Correct Answer: a 10% ammonia solution
Question: Chlorine leaks tend to leave a ____ at the spot leaking
Correct Answer: green/yellowish color
Question: Chlorine leaks always _____, never _____.
Correct Answer: Become larger, Smaller
Question: Always turn a leaking chlorine cylinder so that ______.
Correct Answer: the gas escapes, not the liquid
Question: Chlorine is an ____ that is not combustible but ____.
Correct Answer: oxidizing agent , supports combustion
Question: when you spray ____ on a chlorine leak a ____ will appear.
Correct Answer: ammonia fumes , white vapor
Question: Never store chlorine cylinders in _____.
Questions and CORRECT Answers
Question: Always _____ a piece of equipment before attempting a repair
Correct Answer: Lockout/Tagout
Question: Never Tamper with a ____ on a chlorine cylinder
Correct Answer: fusible plug
Question: Chlorine gas is _____ times heavier than air.
Correct Answer: 2.5
Question: one volume of liquid chlorine produces ____ Volumes of gaseous chlorine under pressure
Correct Answer: 460
Question: Always Change the ______ when changing a chlorine cylinder
Correct Answer: Lead Washer
Question: Always first _________ to a chlorine cylinder before changing the cylinder
Correct Answer: turn off the valve
Question: Always make certain 150-lbs Chlorine cylinders are stored _____
Correct Answer: Upright and secured
Question: When transporting a chlorine cylinder always use a _____
Correct Answer: Hand truck
Question: Never move a one-ton cylinder over a ____ or one that is ____
Correct Answer: full one-ton cylinder , online
Question: Chlorine leaks can be detected with ______
Correct Answer: a 10% ammonia solution
Question: Chlorine leaks tend to leave a ____ at the spot leaking
Correct Answer: green/yellowish color
Question: Chlorine leaks always _____, never _____.
Correct Answer: Become larger, Smaller
Question: Always turn a leaking chlorine cylinder so that ______.
Correct Answer: the gas escapes, not the liquid
Question: Chlorine is an ____ that is not combustible but ____.
Correct Answer: oxidizing agent , supports combustion
Question: when you spray ____ on a chlorine leak a ____ will appear.
Correct Answer: ammonia fumes , white vapor
Question: Never store chlorine cylinders in _____.
