Question 1: The refrigerant cylinders always shipped in ……………. position with their valves on top.
- Vertical
- Horizontal
EPA 608
NEC 2023
EPA 608 Core Exam Practice Test 12
Free EPA 608 Practice Test ( CORE Exam)-12
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epa 608 practice tests
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Frequently Asked Questions
Yes — completely free with no account needed.
The EPA 608 certification is required by law for any technician who purchases or handles refrigerants. It covers safe handling, leak detection, recovery, and environmental regulations.
Type I covers small appliances (≤5 lbs refrigerant), Type II covers high-pressure systems, Type III covers low-pressure systems, and Universal covers all three. Most HVAC technicians pursue Universal certification.
You must score at least 70% on each section of the exam. The Universal exam has four parts: core, Type I, Type II, and Type III.
13
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TimeEPA 608 Core Exam Practice Test 12 — Question List
Question 2: The relief valves which are placed in the downstream line of nitrogen pressure regulator must not be installed in ………….
- Series
- Parallel
Question 3: After which year onwards the CFC refrigerant should come from recovery and recycling to service existing refrigeration systems in USA?
- 1995
- 1992
- 1997
- 1994
Question 4: Disposable cylinders are primarily used for ………….. refrigerant
- Recovered
- Recycled
- Virgin
- Fresh
Question 5: CFC and HFC both have which of the following in common?
- They both have higher ODP
- They both must be recovered before recycling or disposing the appliance
- The both contain chlorine atom which destroys the ozone
- Their normal boiling point is same.
Question 6: The ozone layer in the earth’s stratosphere protects the earth from ………..
- UV radiation
- Infrared radiation
- Nuclear radiation
- Poisoned gases
Question 7: Which of the following is not a ozone depleting substances (ODS)?
- methyl chloroform
- methyl oxide
- halons
- chlorofluorocarbon
Question 8: In refrigeration system low pressure liquid is converted into low pressure vapour in …….
- Accumulator
- Condenser
- Metering device
- Evaporator
Question 9: ……………. mixture is called as ternary refrigerant blend.
- Two-part
- Three-part
- Five-part
- Six-part
Question 10: A compound gauge connected to low side of the refrigeration system measures the pressure in ……
- Psig and in.hg
- Psig and microns
- Microns
- Psia
Question 11: Any two refrigerants should not be mixed because
- It is impossible to reclaim any mixture
- It is impossible recover the mixture in same container
- They may explode
- The mixture may lead to corrosive
Question 12: Removing water vapor from refrigeration system is called as ….
- Condensation
- Evaporation
- dehydration
- Expansion
Question 13: The cooling occurs in vapor compression cycle refrigeration system, when …..
- The refrigerant changes from liquid to vapor
- The refrigerant changes from vapor to liquid
- The refrigerant pressure increases
- The refrigerant temperature decreases
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