2018 Core Practice Exam (9th Edition Manual)

How much can a person be fined per day per violation for knowingly releasing a regulated substance that violates the Clean Air Act? -$10,000 -$25,000 -$37,000 -$44,539

$44,539

A single chlorine atom can destroy how many ozone molecules? -100 -1,000 -10,000 -100,000

100,000

Reusable refrigerant containers under high-pressure must be hydrostatically tested how often? -1 year -3 years -5 years -7 years

5 years

Before shipping any used refrigerant cylinders, check that the cylinder meets what standards: -Department of Transportation -The Significant New Alternatives Policy (SNAP) -Underwriters Laboratories -All of the above

Department of Transportation

Crop loss, eye disease, and skin cancer have been attributed to; -Depletion of Stratospheric nitrogen -Depletion of Stratospheric chlorine monoxide -Depletion of Stratospheric ozone -Depletion of Stratospheric oxygen

Depletion of Stratospheric ozone

Recover any remaining refrigerant and then render the cylinder useless, then recycle the metal is the proper disposal method for; -Recovery cylinders -One pound cans -Disposable cylinders -Accumulator cylinders

Disposable cylinders

What is the Significant New Alternatives Policy (SNAP) Program? -EPA's program that identifies refrigerants with lower overall risks to human health and the environment. -Covers only CFC and HCFC refrigerants used in residential air conditioning. -Relates to CFC and HCFC refrigerants used in commercial air conditioning. -Covers only CFC and HCFC refrigerants used in industrial process refrigeration.

EPA's program that identifies refrigerants with lower overall risks to human health and the environment.

Which type of refrigerant contains no chlorine? -HCFCs -HCFC Blends -HFCs -CFCs

HFCs

Silicone elastomers, for use in seals and gaskets, are not compatible with which refrigerants? -HCFCs -CFCs -HFOs -HFCS

HFOs

HCFCs contain; -Chlorine, Fluorine, and Carbon -Hydrogen, Chlorine, Fluorine, and Carbon -Hydrogen, Fluorine, and Carbon -Hydrogen, Fluorine, and Olefin

Hydrogen, Chlorine, Fluorine, and Carbon

Which international agreement (Treaty) regulated the production and use of CFCs, HCFCs, halons, methyl chloroform and carbon tetrachloride? -Kyoto Treaty -Montreal Protocol -Council of Nicaea -Treaty of Ghent

Montreal Protocol

Which of the following has the highest Ozone Depletion Potential? -HFOs -HCFCs -HFCs -CFCs

CFCs

The molecule found in CFCs and HCFCs that depletes ozone is: -Fluorine -Hydrogen -Carbon -Chlorine

Chlorine

Which of the following refrigerant has a GWP of "1"? -R-22 -R-134a -R-410A -R-1233zd

R-1233zd

Which of the following refrigerants is an HFO? -R-22 -R-134a -R-410A -R-1234ze

R-1234ze

To process refrigerant to a level equal to new (virgin) product specifications as determined by chemical analysis defines; -Recovery -Reclaiming -Reuse -Recycle

Reclaiming

Clean refrigerant for reuse by separating the oil from the refrigerant and removing moisture from the refrigerant by passing it through one or more filter driers, is the definition of; -Recover -Reclaim -Reuse -Recycle

Recycle

An ozone molecule contains; -One oxygen atom -Two oxygen atoms -Three oxygen atoms -Four oxygen atoms

Three oxygen atoms

The condenser _______________________________________ -changes a high-pressure vapor to a high-pressure liquid. -changes a low-pressure vapor to a low-pressure liquid. -changes a high-pressure liquid to a low-pressure liquid. -changes a low-pressure liquid to a low-pressure vapor.

changes a high-pressure vapor to a high-pressure liquid.

The compressor ____________________________________ -changes a high-pressure vapor to a high-pressure liquid. -changes a low-pressure vapor to a high-pressure vapor. -changes a high-pressure liquid to a low-pressure liquid. -changes a low-pressure liquid to a low-pressure vapor.

changes a low-pressure vapor to a high-pressure vapor.

A refrigerant cylinder designed to hold recovered refrigerant has a: -yellow body and grey top. -grey body and yellow top. -green body and yellow top. -orange body and grey top.

grey body and yellow top.

The low-side test-pressure data-plate value should be used by a technician to determine a safe pressure for: -recovering refrigerant. -leak testing. -refrigerant charging. -retrofitting a system.

leak testing.

HFCs ________; -will not damage stratospheric ozone, but have a high GWP. -will damage stratospheric ozone and have a low GWP. -will not deplete stratospheric ozone and have a low GWP. -are only harmful to ground level ozone.

will not damage stratospheric ozone, but have a high GWP.

The chlorine in CFCs and HCFCs; -will dissolve in water. -will not dissolve in water. -will rain out of the atmosphere. -is heavier than air and cannot rise to the stratosphere.

will not dissolve in water.

Which ASHRAE classification means slightly flammable? -A1 -A2L -A3 -B1

A2L