EPA 608 CERTIFICATION CORE QUESTIONS. | FROM QUESTION TO PERFECTION| STUDY WITH CONFIDENCE!

EPA 608 CERTIFICATION CORE QUESTIONS. | FROM
QUESTION TO PERFECTION| STUDY WITH CONFIDENCE!
Course Code:
Course Title:
Programme:
Academic Year: 2026/2027.
Duration: 2 Hours.
Total Marks: 100.
Candidate Instructions:
1) Write your Registration Number on every answer booklet used.
2) Answer ALL questions in Section A and ANY TWO (2) questions in Section B.
3) Read each question carefully before answering.
4) Begin each question on a new page.
5) The marks for each question are indicated in brackets.
6) This paper consists of several printed pages, including this page.
7) Ensure your copy is complete before the examination begins.
8) Unauthorized materials and communication with other candidates are not permitted.




Turn Over.




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,Halons were completely phased out by ______ :
1994
1995
1987
2000 Answer: 1994
Recovered refrigerant is stored in which of the following painted tank:
Gray with yellow top
Yellow with gray top
Yellow with blue top
Blue with yellow top Answer: Gray with yellow top
If your recovery unit does not have a sub-cooling feature recovery rate will be _____ :
Recovery rate is independent
Slower
Faster Answer: Slower
TXV valve maintaining the pressure difference between _____ and _____ of the system
Expansion valve, Evaporator
Condenser, Evaporator
Compressor, Condenser
Evaporator, Compressor Answer: Condenser, Evaporator
After recovering refrigerant from a sealed system, which of the following gas is used to
pressurize (for leak checking) or blow debris out of the system:
Hydrogen
Carbon dioxide
Oxygen
Nitrogen gas Answer: Nitrogen gas
Which one of the following has highest Ozone Depletion Potential (ODP):
HCFC
All will have same ODP
CFC


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,HFC Answer: CFC
The ____connects the evaporator to the compressor in a refrigerant system:
Suction Line
Evaporation Line
Discharge Line
Liquid Line Answer: Suction Line
A violation of the Clean Air Act, including improper record keeping, is subject to a penalty of a
fine of up to _____ per day per violation:
$37,500
$40,000
$24,000
$35,000 Answer: $37,500
At which of the following stage in refrigeration cycle does the refrigerant changes from high-
pressure vapor to a high-pressure liquid:
Evaporator
Condenser
Compressor
Expansion valve Answer: Condenser
Which of the following is not most effective way to detect the general area of a small leaks:
fluorescent Indicator
Ultrasonic tester
All the options are correct
Electronic tester Answer: fluorescent Indicator
During each vacuum decay test, it is observed that after creating the vacuum, the pressure of the
system increases to greater than 0 psig and stops at some point, Then:
Leak could not be observed
Leak is observed but not refrigerant is trapped
None of the answers are correct
The refrigerant could be trapped in the system Answer: The refrigerant could be trapped in the
system
Refrigerant cannot be called reclaimed unless it meets the ______ purity standard:


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, ARI-700
ARI-740
ARI-360
ARI-1024 Answer: ARI-700
One chlorine atom in stratosphere can be able to destroy approximately _______ number of
ozone molecules:
100,000
10,000
1000
100 Answer: 100,000
It is to be ensured that the refrigerant recovery cylinder is not filled to more than _____ of its
capacity
90 percent
60 percent
50 percent
80 percent Answer: 80 percent
Only _____ refrigerant can be transferred or sold to another individual
Disposed
Reclaimed
Recovered
Recycled Answer: Reclaimed
Lifetime of CFCs is believed to be in the range ______ :
Above 1000 years
5 to 10 years
100 to 500 years
20 to 100 years Answer: 20 to 100 years
EPA has divided refrigerated appliances into _____ groups
Six
Three
Four



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