Name: 
 

Chapter 8



Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

Which is the most commonly known CFC refrigerant?
a.
R-500
c.
R-11
b.
R-12
d.
R-134a
 

 2. 

Which HFC refrigerant has taken the place of R-12 for use in domestic refrigeration?
a.
R-134a
c.
R-409a
b.
R-404a
d.
R-410a
 

 3. 

Which is not a health risk associated with ozone depletion?
a.
skin cancer
c.
lung cancer
b.
eye related issues including cataracts
d.
compromised immune systems
 

 4. 

Which layer of the atmosphere is located farthest from the earth’s surface?
a.
troposphere
b.
stratosphere
 

 5. 

Bad ozone is found in which of the following?
a.
troposphere
b.
stratosphere
 

 6. 

Which type of refrigeration oil is found in older systems using R-12 refrigerant?
a.
mineral oil
c.
glycols
b.
alkylbenzenes
d.
esters
 

 7. 

Which of the following terms is defined as “the process of removing refrigerant from an air conditioning system and storing it in an external container”?
a.
recovery
c.
recycling
b.
reclaiming
 

Short Answer
 

 8. 

List four desired properties of refrigerants.
 

 9. 

List two common HC refrigerants.
 

 10. 

What is another name for global warming?
 



 
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