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WorksheetsEPA 608 Exam Study CORE
Total questions: 25
Worksheet time: 13mins
When transporting cylinders containing used refrigerant, DOT requires that you:
Use OSHA approved containers
Attach DOT classification tags
Ship by EPA certified carrier
Do all of the above
How should refrigerant blends be charged?
As a vapor
At a very high temperature
As a liquid
The same as every other refrigerant
What units does a compound pressure gauge for the low side of the system measure in?
PSIA
Torrs and microns
PSIG and inches of mercury
PSIA and microns
What synthetic lubricant is presently used with ternary blends containing HCFCs?
Alkylbenzene
Glycol
Ester
Castor Oil
HFC refrigerants contain which of the following?
Chlorine, flourine, & carbon
Chlorine, flourine, & hydrogen
Hydrogen, chlorine, & carbon
Hydrogen, flourine, & carbon
For an appliance that uses a CFC, HCFC, or HFC refrigerant, which of the following violates the EPA prohibition on venting?
Accidental releases associated with timely repair of an appliance
Refrigerants emitted when cutting a line without properly evacuating the appliance
Refrigerants emitted in a catastrophic failure of an appliance
Refrigerants emitted when connecting or disconnecting low loss hoses to charge or service an appliance
Which factor does NOT affect the speed of evacuation?
The size of the equipment being evacuated
The ambient temperature
The amount of moisture in the system
The brand of micron gauge being used
What is being done in the U.S. to stop damage to the stratospheric ozone layer?
Using natural gas instead of coal to produce electricity
Phasing out the use of chlorofluorocarbons and hydrofluorocarbons
Enforcing strict emission requirements on incinerators
Increasing the energy efficiency of air conditioners
Which of the following refrigerants has the lowest global warming potential?
R-134a
R-407c
R-410a
R-500a
Which of the following leak detection methods is considered to be the most effective for locating the general area of a small leak?
Standing vacuum test
Electronic or ultrasonic tester
Halide Torch
Audible Sound
Which type of refrigerant typically has the lowest global warming potential?
HCFCs
HFOs
HFCs
All are equal
What does Section 608 certification allow a technician to do?
Import R-22 from overseas
Purchase or handle controlled refrigerants
Service motor vehicle air conditioners
Perform any type of work on any type of HVAC equipment
What is the state of the refrigerant entering the compressor of a refrigeration system?
Low pressure liquid
Low pressure vapor
High pressure liquid
High pressure vapor
What does ozone in the stratosphere consist of?
Molecules containing 2 oxygen atoms
Molecules containing 3 oxygen atoms
Molecules containing 4 oxygen atoms
Molecules containing 5 oxygen atoms
Which of the following refrigerants contains chlorine?
R-22
R-134a
R-410a
R-1234yf
Which type of refrigerant has the highest ozone depletion potential (ODP)?
HCFCs
HFCs
CFCs
HFOs
Which process applies to cleaning refrigerant for immediate reuse by oil separation and single or multiple passes through devices, like replaceable core filters driers, which reduce moisture and acidity?
Recycling
Recovering
Reclaiming
Restoring
What should a technician do if they discover that some 410a was added to an r22 system?
Vent the refrigerant since it cannot be reclaimed
Recycle the refrigerant
Recover the refrigerant in a separate recovery tank
Recover and use in another system
Why are HFO refrigerants less flammable than hydrocarbon refrigerants?
They contain chlorine
They contain bromine
They contain flourine
They contain carbon
Refrigerant cylinders should be all of the following EXCEPT?
Be free of rust and damage
Be filled to 95% capacity
Be labled
Be secure
How should disposable cylinders of cfc’s, hcfc’s, hfc’s be discarded?
Bleed any remaining refrigerant to ambient air and put the cylinders in the trash
Recover all remaining refrigerant, render the cylinders useless and recycle the metal.
Refill the cylinders at an approved facility and reuse
Reuse the cylinders as recovery tanks
Which of the following gases is used as the baseline measurement for global warming potential?
Ammonia
Carbon Dioxide
CFC-12
Propane
In addition to fines and being required to appear in court, what penalty can be imposed on service technicians who violate Clean Air Act provisions?
They may lose their certification
They may have equipment confiscated
They may be required to take mandatory training
They may be required to take an online test
Which word applies to the process that returns refrigerants to new product specifications and that requires chemical analysis?
Recovery
Recycle
Reprocess
Reclaim
Which of the following is NOT a recommended safety practice when operating refrigerant recovery or recycle equipment?
Wear safety glasses
Wear protective gloves
Follow all safety precautions for the equipment
Remain at least 5 feet away from any operating equipment
