EPA Certification Core Exam Questions and Correct
Answers (100%COMPLETE ANSWERS) ALREADY
GRADED A+ 100% satisfaction guaranteed
Which of the following is an HCFC? (Choose all that apply) - ANSWER-R-22
Which of the following refrigerants does the Venting Prohibition cover? - ANSWER-CFCs, HCFCs, and
HFCs
Which organization can test your recovery equipment used to service a system with R-12? - ANSWER-UL
AHRI
Who does not need to maintain proper records of refrigerants? - ANSWER-The EPA
You must have a Section 608 certification in order to purchase which of the following? (Select all that
apply) - ANSWER-CFCs
HCFCs
HFCs
Equipment that uses nitrogen as a refrigerant is not subject to Section 608 requirements. - ANSWER-
True
After the evaporator, which component does the refrigerant go to next? - ANSWER-Compressor
As the temperature of a liquid increases, what phase does it turn into? (Assume constant pressure) -
ANSWER-Vapor
Does the refrigerant change state in the compressor? - ANSWER-No, it does not change state
If we increase the pressure acting on a liquid, what state can the substance change to? (Assume
constant temperature) - ANSWER-Solid
,Refrigerant absorbs heat from your indoor air in order to (Select all that apply) - ANSWER-Make your
house cooler
The condenser is doing an opposite job of which component? - ANSWER-Evaporator
What is the compressor's job? - ANSWER-To increase the pressure
What is the condenser's job? - ANSWER-To cool the high pressure vapor
What is the function of the metering device? - ANSWER-To decrease pressure
When refrigerant enters the condenser, what state is the refrigerant in? - ANSWER-High pressure vapor
When refrigerant enters the metering device, what is the state of the refrigerant? - ANSWER-High
pressure liquid
When refrigerant exits the metering device, what is the state of the refrigerant? - ANSWER-Low
pressure liquid
When the refrigerant enters the compressor, what state is it in? - ANSWER-Superheated Vapor
When the refrigerant enters the evaporator, what state is it in? - ANSWER-Liquid
When the refrigerant exits the evaporator, what state is it in? - ANSWER-Vapor
Low pressure vapor
Which components are on the high pressure side? (Select all that apply) - ANSWER-Compressor
Condenser
, Which components change the refrigerant's pressure? (Select all that apply) - ANSWER-Compressor
Metering Device
Which of the following states has the highest temperature? (Assume constant pressure) - ANSWER-
Vapor
Boiling requires the addition of heat. - ANSWER-True
Condensation happens when a gas or vapor cools down and becomes liquid. - ANSWER-True
For the same substance, the average speed of the molecules in a vapor is faster than the average speed
of molecules in a liquid. - ANSWER-True
If we decrease the pressure of a substance, its boiling point decreases. - ANSWER-True
In the condenser, the refrigerant changes state. - ANSWER-True
The boiling point is the temperature of a substance where it turns from liquid to vapor. - ANSWER-True
The boiling point of most refrigerants is 212 °F. - ANSWER-False
Boiling point of water is 212
The vapor leaving the compressor is lower in pressure than vapor entering the compressor. - ANSWER-
False
Compressor increases the pressure
You are boiling a pot of water with the lid on. As the water heats up and starts to boil, you notice that
drops of water form on the bottom of the pot lid. This is an example of condensation. - ANSWER-True
Your air conditioning works by adding cold air into your house. - ANSWER-False
Answers (100%COMPLETE ANSWERS) ALREADY
GRADED A+ 100% satisfaction guaranteed
Which of the following is an HCFC? (Choose all that apply) - ANSWER-R-22
Which of the following refrigerants does the Venting Prohibition cover? - ANSWER-CFCs, HCFCs, and
HFCs
Which organization can test your recovery equipment used to service a system with R-12? - ANSWER-UL
AHRI
Who does not need to maintain proper records of refrigerants? - ANSWER-The EPA
You must have a Section 608 certification in order to purchase which of the following? (Select all that
apply) - ANSWER-CFCs
HCFCs
HFCs
Equipment that uses nitrogen as a refrigerant is not subject to Section 608 requirements. - ANSWER-
True
After the evaporator, which component does the refrigerant go to next? - ANSWER-Compressor
As the temperature of a liquid increases, what phase does it turn into? (Assume constant pressure) -
ANSWER-Vapor
Does the refrigerant change state in the compressor? - ANSWER-No, it does not change state
If we increase the pressure acting on a liquid, what state can the substance change to? (Assume
constant temperature) - ANSWER-Solid
,Refrigerant absorbs heat from your indoor air in order to (Select all that apply) - ANSWER-Make your
house cooler
The condenser is doing an opposite job of which component? - ANSWER-Evaporator
What is the compressor's job? - ANSWER-To increase the pressure
What is the condenser's job? - ANSWER-To cool the high pressure vapor
What is the function of the metering device? - ANSWER-To decrease pressure
When refrigerant enters the condenser, what state is the refrigerant in? - ANSWER-High pressure vapor
When refrigerant enters the metering device, what is the state of the refrigerant? - ANSWER-High
pressure liquid
When refrigerant exits the metering device, what is the state of the refrigerant? - ANSWER-Low
pressure liquid
When the refrigerant enters the compressor, what state is it in? - ANSWER-Superheated Vapor
When the refrigerant enters the evaporator, what state is it in? - ANSWER-Liquid
When the refrigerant exits the evaporator, what state is it in? - ANSWER-Vapor
Low pressure vapor
Which components are on the high pressure side? (Select all that apply) - ANSWER-Compressor
Condenser
, Which components change the refrigerant's pressure? (Select all that apply) - ANSWER-Compressor
Metering Device
Which of the following states has the highest temperature? (Assume constant pressure) - ANSWER-
Vapor
Boiling requires the addition of heat. - ANSWER-True
Condensation happens when a gas or vapor cools down and becomes liquid. - ANSWER-True
For the same substance, the average speed of the molecules in a vapor is faster than the average speed
of molecules in a liquid. - ANSWER-True
If we decrease the pressure of a substance, its boiling point decreases. - ANSWER-True
In the condenser, the refrigerant changes state. - ANSWER-True
The boiling point is the temperature of a substance where it turns from liquid to vapor. - ANSWER-True
The boiling point of most refrigerants is 212 °F. - ANSWER-False
Boiling point of water is 212
The vapor leaving the compressor is lower in pressure than vapor entering the compressor. - ANSWER-
False
Compressor increases the pressure
You are boiling a pot of water with the lid on. As the water heats up and starts to boil, you notice that
drops of water form on the bottom of the pot lid. This is an example of condensation. - ANSWER-True
Your air conditioning works by adding cold air into your house. - ANSWER-False
