1
EPA 608 CORE EXAM ACTUAL EXAM ALL
200 QUESTIONS AND CORRECT
DETAILED ANSWERS
What characteristic or characteristics of CFCs make them more likely than other
chlorine compounds to reach the stratosphere? - (ANSWER)Dont disolve iin
water
Each chlorine atom in the stratosphere can destroy how many ozone molecules? -
(ANSWER)100,000 ozone molecules
Which refrigerant contains a CFC?
R500, R12, R113 or R11? - (ANSWER)Theyre all CFC's
HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain? -
(ANSWER)Hydrogen, chlorine, flourine and carbon
Which refrigerant is a chlorine free refrigerant? - (ANSWER)HFC R 134A
What is the result damage to the ozone layer? - (ANSWER)Increases in human
skin cancer
According to the EPA, chlorine in the stratosphere is believed to come primarily
from the CFCs rather than from volcanoes because - (ANSWER)-) The rise in the
amount of chlorine measured in the stratosphere over the past 2 decades
, 2
matches the rise of chlorine which has different natural sources of chlorune
overthe same period
-) The rise of chlorine in the statosphere matches the rise in CFCs over the same
period
-) samples of air taken over erupting volcanoes shows that volcanoes contribute a
small amount of chlorine in the stratosphere compared to CFCs
-) ALL OF THE ABOVE
Which is a violation of the EPA clean air act? - (ANSWER)-) falsifying or failing to
keep required records
-) failing to keep evacuation levels before opening or disposing of appliances
-) knowingly releasing HFC's, HCFCs or CFC refrigerants
-) ALL OF THE ABOVE
Discarding of disposable cylinders is accomplished by - (ANSWER)Assuring that all
refrigerant is recovered and that the cylinders are rendered useless then recycle
the metal
How much money can be awarded to a person who supplies information leading
to a conviction against the technician who is intentionally venting refrigerants or
violatingsome other provision of the EPA CLEAN AIR ACT - (ANSWER)$10,000
CFC's will no longer be manufactured or imported into the U.S. after what year? -
(ANSWER)1995
, 3
Since July 1, 1992 it has been illegal to: - (ANSWER)Knowingly releasing HCF or
HCFC refrigerants in the U.S.
Which compounds are controlled by the Montreal protocol? - (ANSWER)-) chloric
floric carbons
-) hydro chloric carbons
-) halons
-) all of the above
EPA regulations cover all AC and refrigeration equipment when containing what? -
(ANSWER)Any refrigerant or refrigerant substitute
The syntetic substitute currently usedwith blends containing HCFCs is: -
(ANSWER)Alcobenzine
What is the significance of atheotropic mixture: - (ANSWER)The mixture
combines to act as a single compound refrigerant
Cooling occurs in a vapor compression refrigeration system when: -
(ANSWER)Refrigerant liquid boils into a vapor
Ozone depletion in the stratosphere is what type of problem: - (ANSWER)Its a
GLOBAL problem
, 4
The definition of recover is: - (ANSWER)To remove refrigerant in any condition
from a system and store it an external container without neccesarily testing it
Which of the following leak detection methods is considered by the EPA to be the
effective for locating the general area of small leaks? - (ANSWER)Electronic
ultrasonic testers
Recovery during low ambient temperatures will: - (ANSWER)Slow the recovery
process
During dehydration of a refrigeration system the refrigeration system is heated
to: - (ANSWER)Decrease dehydration time
To determine the safe pressure for leak testing one should use: - (ANSWER)Low
side test data plate value
Care should be used to avoid over filling refrigerant storage cylinders because: -
(ANSWER)The internal pressure of the cylinders may rise and cause an explosion
When transporting cylinders containing used refrigerants DOT REQUIRES that you:
- (ANSWER)attach DOT classification tags
What is the significance of an azeotropic mixture? - (ANSWER)The mixture
combines to act like a single component refrigerant
EPA 608 CORE EXAM ACTUAL EXAM ALL
200 QUESTIONS AND CORRECT
DETAILED ANSWERS
What characteristic or characteristics of CFCs make them more likely than other
chlorine compounds to reach the stratosphere? - (ANSWER)Dont disolve iin
water
Each chlorine atom in the stratosphere can destroy how many ozone molecules? -
(ANSWER)100,000 ozone molecules
Which refrigerant contains a CFC?
R500, R12, R113 or R11? - (ANSWER)Theyre all CFC's
HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain? -
(ANSWER)Hydrogen, chlorine, flourine and carbon
Which refrigerant is a chlorine free refrigerant? - (ANSWER)HFC R 134A
What is the result damage to the ozone layer? - (ANSWER)Increases in human
skin cancer
According to the EPA, chlorine in the stratosphere is believed to come primarily
from the CFCs rather than from volcanoes because - (ANSWER)-) The rise in the
amount of chlorine measured in the stratosphere over the past 2 decades
, 2
matches the rise of chlorine which has different natural sources of chlorune
overthe same period
-) The rise of chlorine in the statosphere matches the rise in CFCs over the same
period
-) samples of air taken over erupting volcanoes shows that volcanoes contribute a
small amount of chlorine in the stratosphere compared to CFCs
-) ALL OF THE ABOVE
Which is a violation of the EPA clean air act? - (ANSWER)-) falsifying or failing to
keep required records
-) failing to keep evacuation levels before opening or disposing of appliances
-) knowingly releasing HFC's, HCFCs or CFC refrigerants
-) ALL OF THE ABOVE
Discarding of disposable cylinders is accomplished by - (ANSWER)Assuring that all
refrigerant is recovered and that the cylinders are rendered useless then recycle
the metal
How much money can be awarded to a person who supplies information leading
to a conviction against the technician who is intentionally venting refrigerants or
violatingsome other provision of the EPA CLEAN AIR ACT - (ANSWER)$10,000
CFC's will no longer be manufactured or imported into the U.S. after what year? -
(ANSWER)1995
, 3
Since July 1, 1992 it has been illegal to: - (ANSWER)Knowingly releasing HCF or
HCFC refrigerants in the U.S.
Which compounds are controlled by the Montreal protocol? - (ANSWER)-) chloric
floric carbons
-) hydro chloric carbons
-) halons
-) all of the above
EPA regulations cover all AC and refrigeration equipment when containing what? -
(ANSWER)Any refrigerant or refrigerant substitute
The syntetic substitute currently usedwith blends containing HCFCs is: -
(ANSWER)Alcobenzine
What is the significance of atheotropic mixture: - (ANSWER)The mixture
combines to act as a single compound refrigerant
Cooling occurs in a vapor compression refrigeration system when: -
(ANSWER)Refrigerant liquid boils into a vapor
Ozone depletion in the stratosphere is what type of problem: - (ANSWER)Its a
GLOBAL problem
, 4
The definition of recover is: - (ANSWER)To remove refrigerant in any condition
from a system and store it an external container without neccesarily testing it
Which of the following leak detection methods is considered by the EPA to be the
effective for locating the general area of small leaks? - (ANSWER)Electronic
ultrasonic testers
Recovery during low ambient temperatures will: - (ANSWER)Slow the recovery
process
During dehydration of a refrigeration system the refrigeration system is heated
to: - (ANSWER)Decrease dehydration time
To determine the safe pressure for leak testing one should use: - (ANSWER)Low
side test data plate value
Care should be used to avoid over filling refrigerant storage cylinders because: -
(ANSWER)The internal pressure of the cylinders may rise and cause an explosion
When transporting cylinders containing used refrigerants DOT REQUIRES that you:
- (ANSWER)attach DOT classification tags
What is the significance of an azeotropic mixture? - (ANSWER)The mixture
combines to act like a single component refrigerant
