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Refrigeration Exam Questions with Answers
(100% Correct Answers)
Stratospheric Ozone Depletion Answer: Global Problem
The condition and state of refrigerant as it enters the condenser of an air-
conditioning system Answer: Superheated Vapor
What determines the time required to properly evacuate and dehydrate a
system prior to charging with refrigerant? Answer: -The total volume of the
system.
-The amount on noncondensables in the system.
-The ambient temperature surrounding the system.
What is the condition and state of the refrigerant as it leaves a receiver?
Answer: Subcooled Liquid
How are refrigerant cylinders shipped? Answer: Upright
Which refrigerant contains the greatest amount of chlorine? Answer: CFC's
When did it become unlawful to intentionally release Class I and Class II
refrigerants into the atmosphere? Answer: July 1, 1992
Which of the following refrigerants have the lowest ozone-depletion potential
(ODP)? Answer: HFC's
What is the chemical in CFC refrigerant that destroys stratospheric ozone?
Answer: Chlorine
What does stratosperic ozone consist of? Answer: three oxygen atoms
List an HFC refrigerant Answer: R-134a
What is the component of an air-conditioning system that changes low-pressure
vapor to high-pressure vapor? Answer: Compressor
, 2
What is the gas in the stratosphere that protects us from ultraviolet radiation?
Answer: ozone
List a CFC refrigerant Answer: R-12
What is the molecule that is found in the stratosphere that indicates ozone
depletion is taking place? Answer: Chlorine Monoxide
List a refrigerant that does not contain chlorine Answer: R-134a
Which of the following actions is a violation of the Clean Air Act (CAA)?
Answer: -Knowingly releasing Class I and Class II substances.
-Failing to keep or falsifying required records.
-Failing to reach the required evacuation levels before opening a system to the
atmosphere for service.
When are disposable refrigerant cylinders used? Answer: Packaging virgin
refrigerant
List an HCFC refrigerant Answer: R-123
What is the maximum capacity for refilling approved cylinders? Answer: 80%
What is true of any system that does not hold a vacuum after the recommended
evaluation process? Answer: It may have a restriction and may contain
moisture.
To recover refrigerant means Answer: remove refrigerant, in any condition,
from a system and store it in an external container.
The process that reduces contaminants in used refrigerant by oil separation
with single and multiple passes through devices such as replaceable filter core
driers, which reduce moisture, acidity, and particulate matter is
_______________. Answer: Recycling
Refrigeration Exam Questions with Answers
(100% Correct Answers)
Stratospheric Ozone Depletion Answer: Global Problem
The condition and state of refrigerant as it enters the condenser of an air-
conditioning system Answer: Superheated Vapor
What determines the time required to properly evacuate and dehydrate a
system prior to charging with refrigerant? Answer: -The total volume of the
system.
-The amount on noncondensables in the system.
-The ambient temperature surrounding the system.
What is the condition and state of the refrigerant as it leaves a receiver?
Answer: Subcooled Liquid
How are refrigerant cylinders shipped? Answer: Upright
Which refrigerant contains the greatest amount of chlorine? Answer: CFC's
When did it become unlawful to intentionally release Class I and Class II
refrigerants into the atmosphere? Answer: July 1, 1992
Which of the following refrigerants have the lowest ozone-depletion potential
(ODP)? Answer: HFC's
What is the chemical in CFC refrigerant that destroys stratospheric ozone?
Answer: Chlorine
What does stratosperic ozone consist of? Answer: three oxygen atoms
List an HFC refrigerant Answer: R-134a
What is the component of an air-conditioning system that changes low-pressure
vapor to high-pressure vapor? Answer: Compressor
, 2
What is the gas in the stratosphere that protects us from ultraviolet radiation?
Answer: ozone
List a CFC refrigerant Answer: R-12
What is the molecule that is found in the stratosphere that indicates ozone
depletion is taking place? Answer: Chlorine Monoxide
List a refrigerant that does not contain chlorine Answer: R-134a
Which of the following actions is a violation of the Clean Air Act (CAA)?
Answer: -Knowingly releasing Class I and Class II substances.
-Failing to keep or falsifying required records.
-Failing to reach the required evacuation levels before opening a system to the
atmosphere for service.
When are disposable refrigerant cylinders used? Answer: Packaging virgin
refrigerant
List an HCFC refrigerant Answer: R-123
What is the maximum capacity for refilling approved cylinders? Answer: 80%
What is true of any system that does not hold a vacuum after the recommended
evaluation process? Answer: It may have a restriction and may contain
moisture.
To recover refrigerant means Answer: remove refrigerant, in any condition,
from a system and store it in an external container.
The process that reduces contaminants in used refrigerant by oil separation
with single and multiple passes through devices such as replaceable filter core
driers, which reduce moisture, acidity, and particulate matter is
_______________. Answer: Recycling
