EPA 608 core generated practice test.

What is the primary purpose of the ozone layer?

• Reflect solar radiation

• Absorb oxygen from the atmosphere

• Protect Earth from ultraviolet radiation

• Trap greenhouse gases

CFCs are harmful because they contain which element that destroys ozone?

• Hydrogen

• Chlorine

• Fluorine

• Carbon

Which refrigerant type has the highest ozone depletion potential (ODP)?

• HFCs

• HFOs

• CFCs

• HCFCs

What is the Ozone Depletion Potential (ODP) of HFC refrigerants?

• High

• Moderate

• Very High

• None

Which refrigerant has a very high Global Warming Potential (GWP)?

• R-410A

• R-600a

• R-290

What is the baseline gas for measuring Global Warming Potential (GWP)?

• Methane

• Nitrous oxide

• Carbon Dioxide

• Hydrogen

When CFCs reach the stratosphere, what causes them to break apart?

• Gravity

• Magnetic Fields

• Ultraviolet Radiation

• Atmospheric Pressure

How long can a single chlorine atom destroy ozone molecules in the stratosphere?

• 5 years

• 20 years

• 70 years

• 120 years

Which refrigerant classification represents "non-toxic, non-flammable" refrigerants?

• A1
• B1

• B3

• A2L

What type of refrigerant has no chlorine content?

• HFC

• CFC

• HCFC

• None