EPA 608 Core #1

What is the purpose of the compressor in the vapor-compression refrigeration cycle?

• To remove heat from the refrigerant

• To change the refrigerant from a liquid to a vapor

• To remove moisture from the refrigerant

• To cool the condenser

Which type of refrigerant has the highest ozone depletion potential?

• CFC

• HCFC

• HFC

• HFO

What is the global warming potential (GWP) of carbon dioxide (CO₂)?

• 1

• 10

• 100

• 1000

Tags

NGSS.HS-ESS2-6

Which refrigerant has the lowest global warming potential (GWP)?

• R-134a

• R-410A

• R-404A

• R-600a

Tags

NGSS.HS-ESS3-4

What is the safety group classification for a refrigerant with low flammability and low toxicity?

• A1

• A2

• B1

• B2

Which refrigerant type does not contain chlorine?

• CFC-12

• HCFC-22

• HCFC-409A

• HFC-404A

Tags

NGSS.HS-PS1-2

What is the purpose of bubble and dew points in refrigerant identification?

• To indicate the condensing and evaporation temperatures

• To measure the pressure of the refrigerant

• To determine the refrigerant's toxicity level

• To calculate the refrigerant's global warming potential

Which refrigerant oil is commonly used in HCFC blends?

• Synthetic alkylbenzene oil

• Synthetic polyolester oil

• Mineral oil

• Polyvinyl ether oil

What is the pressure range for medium-pressure refrigerants at a liquid-phase temperature of 104°F?

• Below 30 psig

• 30 psig to 155 psig

• 155 psig to 340 psig

• Over 340 psig

Which refrigerant has the highest ozone depletion potential?

• R-11

• R-12

• R-22

• R-123