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Free Practice Quiz Question List

3 Environmental Effects and Refrigerant Regulations Online Quiz Questions

Use this free practice quiz with 20 questions to review 3 Environmental Effects and Refrigerant Regulations, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

HFCs do not deplete the ozone layer, but many can still have a substantial climate impact.

  1. A

    True

  2. B

    False

02
Written response
1 point

GWP compares a greenhouse gas's heat-trapping effect with the same mass of carbon dioxide over a specified period. What period, in years, is commonly used?

03
Fill in the blank
1 point

The stratospheric ozone layer absorbs much of the Sun's harmful .

04
Choose one
1 point

Which statement best describes what a refrigerant's global-warming potential (GWP) measures?

  1. A

    It measures how strongly a refrigerant depletes ozone compared with carbon dioxide.

  2. B

    It compares the heat-trapping effect of the same mass of a greenhouse gas with carbon dioxide over a specified period.

  3. C

    It measures the energy efficiency of a refrigeration system over its operating life.

  4. D

    It reports the operating pressure required by a refrigerant.

05
Written response
1 point

Which U.S. act provides for an HFC phasedown and restrictions on certain higher-GWP uses? Enter its acronym.

06
Fill in the blank
1 point

For stationary refrigeration and air-conditioning equipment, technicians must required refrigerant rather than deliberately release it during covered service, repair, or disposal.

07
True or false
1 point

EPA's Significant New Alternatives Policy (SNAP) evaluates substitutes for ozone-depleting substances, including their environmental and safety risks.

  1. A

    True

  2. B

    False

08
Choose one
1 point

A facility is considering carbon dioxide (R-744) to reduce refrigerant-related climate impact. Which condition must be met before using it in the system?

  1. A

    Choose carbon dioxide because its low GWP means it can be used in any existing system without design changes.

  2. B

    Choose ammonia because its low climate impact means no special safety requirements apply.

  3. C

    Consider carbon dioxide only if the system is designed to operate at its high pressures.

  4. D

    Choose a hydrocarbon because low GWP makes flammability irrelevant.

09
Choose all
1 point

Which factors does the material identify as affecting a refrigeration system's climate impact? Select all correct choices.

  1. A

    Refrigerant leaks

  2. B

    The amount of refrigerant charged into the system

  3. C

    The system's energy use

  4. D

    Refrigerant emissions during servicing and disposal

  5. E

    The color of the equipment cabinet

10
Choose all
1 point

Which statements accurately describe potential lower-GWP refrigerant alternatives and their tradeoffs? Select all correct choices.

  1. A

    Carbon dioxide (R-744) has very low GWP, but systems operate at high pressures.

  2. B

    Ammonia (R-717) has very low climate impact, but it is toxic.

  3. C

    Hydrocarbons such as propane have low GWP, but they are flammable.

  4. D

    HFOs are often lower-GWP options than older HFCs, but their suitability and environmental properties vary.

  5. E

    Any lower-GWP refrigerant is automatically suitable for every system.

11
Choose one
1 point

A technician compares the ozone-depletion potential of CFCs and HCFCs. Which conclusion is supported?

  1. A

    HCFCs deplete ozone, but CFCs do not.

  2. B

    CFCs generally have greater ozone-depletion potential than HCFCs.

  3. C

    HFCs generally have greater ozone-depletion potential than CFCs.

  4. D

    CFCs and HCFCs have no effect on ozone.

12
Choose one
1 point

Which statement accurately describes Section 608 leak-repair requirements for stationary refrigeration and air-conditioning equipment?

  1. A

    Section 608 requires leak repair for every system whenever any leak is detected.

  2. B

    Section 608 includes leak-repair requirements in specified cases.

  3. C

    Section 608 applies leak-repair requirements only to systems using carbon dioxide.

  4. D

    Section 608 has no leak-repair requirements.

13
Open ended
1 point

A facility manager argues that the refrigerant with the lowest GWP must be the best choice for every cooling system. Explain why this conclusion is not justified, and identify at least three other considerations that should guide refrigerant selection.

14
Choose one
1 point

A technician compares two effects of a refrigerant: its effect on the ozone layer and its contribution to warming. Which statement best describes an HFC that contains no chlorine?

  1. A

    It depletes ozone because it contains chlorine.

  2. B

    It does not deplete ozone, but it may still contribute substantially to climate change.

  3. C

    It has no environmental effects when released.

  4. D

    It necessarily has a lower GWP than carbon dioxide.

15
Written response
1 point

What international agreement phases out ozone-depleting substances? Enter the agreement's name.

16
Choose one
1 point

Which description correctly explains global-warming potential (GWP)?

  1. A

    It measures how quickly a refrigerant leaks from equipment compared with carbon dioxide.

  2. B

    It measures ozone destruction relative to carbon dioxide over a specified period.

  3. C

    It compares the heat-trapping effect of the same mass of a greenhouse gas with carbon dioxide over a specified period.

  4. D

    It measures the system's energy use relative to the mass of refrigerant charged.

17
True or false
1 point

For stationary refrigeration and air-conditioning equipment, Section 608 prohibits intentionally venting ozone-depleting refrigerants and most substitutes during service, repair, or disposal.

  1. A

    True

  2. B

    False

18
Choose one
1 point

A facility is considering R-744 to reduce refrigerant-related climate impact. What equipment consideration is essential when selecting this option?

  1. A

    Choose equipment designed to operate at the high pressures involved.

  2. B

    Use ordinary equipment because R-744 operates at low pressure.

  3. C

    Avoid R-744 because it is highly flammable.

  4. D

    Choose R-744 only when ozone depletion is the main concern.

19
Choose one
1 point

Which comparison correctly identifies important hazards of two lower-GWP refrigerant options?

  1. A

    Ammonia is low-GWP and non-toxic, while propane is low-GWP and nonflammable.

  2. B

    Both ammonia and propane are ozone-depleting substances.

  3. C

    Ammonia is flammable, while propane is toxic.

  4. D

    Ammonia has very low climate impact but is toxic; propane is low-GWP but flammable.

20
Written response
1 point

What amendment to the Montreal Protocol adds a phasedown of HFCs because of their climate impact? Enter the amendment's name.