1 | Page
CWEA COLLECTIONS GRADE 2
PRACTICE TEST QUESTIONS AND
ANSWERS 2025
Why are gasoline and volatile solvents objectionable when
present in a sewer? - correct answer- They produce an
explosion hazard
You should never attempt to install, troubleshoot, maintain,
repair, or replace electrical equipment unless: - correct answer-
You know what you are doing, are qualified, and are authorized.
How many different areas of traffic zones are there when
working in roadways? - correct answer- Five
Why should hydrogen sulfide be controlled? - correct answer-
To protect sewers and structures from corrosion
Personnel entering a Permit Required Confined Space must
have the following training: - correct answer- Entry and rescue
procedures
, 2 | Page
To find proper protective gear before application of a product,
you would: - correct answer- Look at the MSDS (Material
Safety Data Sheet)
The gas most commonly associated with septic wastewater is: -
correct answer- Hydrogen Sulfide (H2S)
The lack of an unpleasant odor in a structure does not always
mean that dangerous gases are not present because: - correct
answer- Some dangerous gases have no odor
What four conditions are necessary to create an explosion? -
correct answer- Combustible gas, adequate oxygen, sufficient
heat, and proper mixing of gas and oxygen.
What does "transition area" mean in traffic control? - correct
answer- Moves traffic out of its normal path
The term "transition area" is one component of a: - correct
answer- Traffic Control Zone
CWEA COLLECTIONS GRADE 2
PRACTICE TEST QUESTIONS AND
ANSWERS 2025
Why are gasoline and volatile solvents objectionable when
present in a sewer? - correct answer- They produce an
explosion hazard
You should never attempt to install, troubleshoot, maintain,
repair, or replace electrical equipment unless: - correct answer-
You know what you are doing, are qualified, and are authorized.
How many different areas of traffic zones are there when
working in roadways? - correct answer- Five
Why should hydrogen sulfide be controlled? - correct answer-
To protect sewers and structures from corrosion
Personnel entering a Permit Required Confined Space must
have the following training: - correct answer- Entry and rescue
procedures
, 2 | Page
To find proper protective gear before application of a product,
you would: - correct answer- Look at the MSDS (Material
Safety Data Sheet)
The gas most commonly associated with septic wastewater is: -
correct answer- Hydrogen Sulfide (H2S)
The lack of an unpleasant odor in a structure does not always
mean that dangerous gases are not present because: - correct
answer- Some dangerous gases have no odor
What four conditions are necessary to create an explosion? -
correct answer- Combustible gas, adequate oxygen, sufficient
heat, and proper mixing of gas and oxygen.
What does "transition area" mean in traffic control? - correct
answer- Moves traffic out of its normal path
The term "transition area" is one component of a: - correct
answer- Traffic Control Zone
