Timedora
Free Practice Quiz Question List

1 Ozone Depletion and Refrigerant Environmental Impacts Online Quiz Questions

Use this free practice quiz with 20 questions to review 1 Ozone Depletion and Refrigerant Environmental Impacts, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

What does the term “ozone hole” describe?

  1. A

    An empty region of the atmosphere

  2. B

    A region of unusually low ozone

  3. C

    A region where the atmosphere contains no ultraviolet radiation

  4. D

    A region where all atmospheric ozone has moved to the lower atmosphere

02
True or false
1 point

The ozone hole is an empty hole in the atmosphere.

  1. A

    True

  2. B

    False

03
Fill in the blank
1 point

When ultraviolet light breaks down chlorine-containing refrigerants in the stratosphere, it releases atoms that participate in reactions that destroy ozone.

04
Written response
1 point

What approximate 100-year GWP does the material give for HFC-134a?

05
Choose one
1 point

Why do HCFCs generally have lower ozone-depletion potential than CFCs without having zero ozone impact?

  1. A

    Their hydrogen makes them unable to release chlorine.

  2. B

    They contain no chlorine or bromine.

  3. C

    They are more likely than CFCs to break down in the lower atmosphere, but still have nonzero ozone impact.

  4. D

    They break down only after they have destroyed ozone.

06
Choose all
1 point

Which refrigerant groups described in the material do not deplete stratospheric ozone? Select all that apply.

  1. A

    CFCs

  2. B

    HCFCs

  3. C

    HFCs

  4. D

    HFOs

  5. E

    Natural refrigerants

07
Written response
1 point

What operational factor causes indirect emissions from a refrigeration system?

08
Fill in the blank
1 point

HCFC-22 has an ozone-depletion potential of about .

09
True or false
1 point

A refrigerant with zero ozone-depletion potential must also have low global-warming potential.

  1. A

    True

  2. B

    False

10
Choose one
1 point

Which chemical is assigned an ozone-depletion potential of 1 and serves as the comparison baseline?

  1. A

    Carbon dioxide

  2. B

    CFC-11

  3. C

    HFC-134a

  4. D

    HCFC-22

11
Choose all
1 point

At which stages can refrigerant emissions occur? Select all that apply.

  1. A

    Manufacture

  2. B

    Equipment operation through leaks

  3. C

    Servicing

  4. D

    Equipment disposal

  5. E

    The system’s use of electricity

12
Choose one
1 point

A refrigeration unit has no refrigerant leak, but its electricity use causes emissions at the power source. Which impact does this illustrate?

  1. A

    Direct ozone depletion

  2. B

    Indirect climate emissions

  3. C

    Direct refrigerant emissions

  4. D

    Ozone-depletion potential

13
Open ended
1 point

A technician is comparing two refrigeration systems. Explain how refrigerant leakage and system operation can each contribute to climate impact, and identify the factors that affect each contribution.

14
Choose one
1 point

If the amount of stratospheric ozone decreases, what is the most direct expected effect at Earth’s surface?

  1. A

    Less UV-B radiation reaches Earth’s surface.

  2. B

    More UV-B radiation reaches Earth’s surface.

  3. C

    The amount of UV-B reaching Earth’s surface stays the same.

  4. D

    The atmosphere stops receiving ultraviolet radiation.

15
True or false
1 point

Refrigerant can escape during servicing or equipment disposal even if the equipment has otherwise been working as intended.

  1. A

    True

  2. B

    False

16
Choose one
1 point

Which statement correctly distinguishes ozone-depletion potential (ODP) from global-warming potential (GWP)?

  1. A

    ODP compares warming with CO₂, while GWP compares ozone depletion with CFC-11.

  2. B

    ODP and GWP are interchangeable measures of a refrigerant’s total environmental impact.

  3. C

    ODP compares ozone depletion with CFC-11, while GWP compares warming with the same mass of CO₂ over a specified period.

  4. D

    ODP measures energy use, while GWP measures refrigerant leakage.

17
Written response
1 point

Which refrigerant group has zero ODP because its members contain no chlorine or bromine that depletes ozone, even though some members have high GWPs?

18
Choose one
1 point

Which statement best describes the environmental characteristics of HFO refrigerants?

  1. A

    HFOs generally have high ODP because they break down in the lower atmosphere.

  2. B

    All HFOs have the same GWP as CO₂.

  3. C

    HFOs deplete ozone but cannot contribute to climate warming.

  4. D

    HFOs generally have zero ODP, and some have very low GWP because they break down more readily in the lower atmosphere.

19
Written response
1 point

Using the approximate 100-year GWP of 1,470 for HFC-134a, what is the approximate CO₂-equivalent of a 2 kg release? Enter the numeric value in kg CO₂-equivalent.

20
Choose one
1 point

Why do HCFCs generally have lower ODP than CFCs without having zero ODP?

  1. A

    Their hydrogen guarantees that no HCFC reaches the stratosphere.

  2. B

    Their hydrogen makes them more likely to break down in the lower atmosphere, although some still reach the stratosphere and can contribute to ozone depletion.

  3. C

    They contain no chlorine, so their ODP is zero.

  4. D

    They have lower ODP only because they have lower GWP.