WASTEWATER OPERATOR
CERTIFICATION STUDY GUIDE
GRADE 1
which is not an essential ingredient for all ordinary fires?
a. ignition source
b. fuel
c. heat
d. oxygen - ANSWERS-ignition source
Safety:
If some clothes are on fire, what class of fire is it? - ANSWERS-class
D
Safety:
If some magnesium is on fire, what class of fire is it? - ANSWERS-3
Safety:
,What is the minimum number of people that should be on-site
working at a confined space site? where one of them is entering a
manhole - ANSWERS-3
Safety:
What type of fire extinguishers should be in pump stations -
ANSWERS-A-B-C chemical type
Basic Chemistry:
What piece of laboratory glassware is primarily used to mix
checmicals and measure approximately volumes? - ANSWERS-
beaker
Basic Chemistry:
The electrical potential between two points is measured in -
ANSWERS-volts
Basic Chemistry:
What is the most common use today for a positive-displacement
pump - ANSWERS-chemical feed pump
Basic Chemistry:
, Which lab glassware will give the most accurate measurements of
liquids - ANSWERS-burettes
Basic Chemistry:
Which lab glassware is used for measuring volumes - ANSWERS-
graduated cylinders
Basic Chemistry:
People working in and around wastewater must be immunized for -
ANSWERS-tetanus
Basic Chemistry:
Which lab tests has a zero holding time - ANSWERS-chlorine
residual
Basic Chemistry:
Which one of the following statements concerning colloids is false?
a. solutes have a greater effect on freezing and boiling points of
liquids than do colloids
CERTIFICATION STUDY GUIDE
GRADE 1
which is not an essential ingredient for all ordinary fires?
a. ignition source
b. fuel
c. heat
d. oxygen - ANSWERS-ignition source
Safety:
If some clothes are on fire, what class of fire is it? - ANSWERS-class
D
Safety:
If some magnesium is on fire, what class of fire is it? - ANSWERS-3
Safety:
,What is the minimum number of people that should be on-site
working at a confined space site? where one of them is entering a
manhole - ANSWERS-3
Safety:
What type of fire extinguishers should be in pump stations -
ANSWERS-A-B-C chemical type
Basic Chemistry:
What piece of laboratory glassware is primarily used to mix
checmicals and measure approximately volumes? - ANSWERS-
beaker
Basic Chemistry:
The electrical potential between two points is measured in -
ANSWERS-volts
Basic Chemistry:
What is the most common use today for a positive-displacement
pump - ANSWERS-chemical feed pump
Basic Chemistry:
, Which lab glassware will give the most accurate measurements of
liquids - ANSWERS-burettes
Basic Chemistry:
Which lab glassware is used for measuring volumes - ANSWERS-
graduated cylinders
Basic Chemistry:
People working in and around wastewater must be immunized for -
ANSWERS-tetanus
Basic Chemistry:
Which lab tests has a zero holding time - ANSWERS-chlorine
residual
Basic Chemistry:
Which one of the following statements concerning colloids is false?
a. solutes have a greater effect on freezing and boiling points of
liquids than do colloids
