Ozone in the stratosphere above the earth consists of:

molecules containing 3 oxygen atoms

molecules containing 2 oxygen atoms

pollutants that have risen from ground level

While servicing a system, the technician discovers that some R-502 was added to a R-22 system. The technician should:

recover the refrigerant into a separate tank.

vent the refrigerant since it cannot be reclaimed.

recover and use it in a different system.

What is being done in the U.S. to stop damage to the stratospheric ozone layer?

capturing and ultimately eliminating use of CFCs

using natural gas instead of coal to generate electricity.

enforcing strict emission requirements on incinerators.

Different refrigerants may be mixed in a single recovery cylinder.

any time you don't know what refrigerant you are recovering.

as long as you mark the cylinder with the name of each refrigerant.

only if the refrigerant is going to be reclaimed.

Once you become certified, the law states that you must repair all leaks in small appliances.

It depends on the size of the leak

If the appliance compressor dose not run in passive recovery, it is required that you...

recover from both the high and low side.

recover from the high side only.

not recover, just vent the refrigerant to the air.

When you are finished with a disposable refrigerant cylinder you should

recover any refrigerant, render the cylinder unusable, and properly dispose of it

dispose of it in a construction dumpster

refill it again as long as you do not use a CFC

When using nitrogen, the nitrogen tank must be equipped with...

a regular and pressure relief valve

When brazing or exposing refrigerants to open flames or red hot metal,

R-12 and R-22 can form a phosgene gas.

R-12 and R-22 can form hydrochloric and hydroflouric acids

ensure you are in a well ventilated area.

When brazing or exposing refrigerants to open flames or red hot metal,

R-12 and R-22 can form a phosgene gas.

R-12 and R-22 can form hydrochloric and hydroflouric acids

ensure you are in a well ventilated area.

Under conditions of ARI 740-1993, recovery devices manufactured before November 15,1993, must...

be able to remove 80% of the refrigerant charge or achieve 4" Hg vacuue.

be able to remove 90% of the refrigerant charge or achieve 4" Hg vacuue, if the compressor is in operation.

be able to remove 80% of the refrigerant charge of achieve 4" Hg vacuue, if the compressor is not operating.

be able to remove 70% of the refrigerant charge or achieve 4" Hg vacuum.

Under conditions of ARI 740-1993, recovery devices manufactured after November 15, 1993, must...

Be able to remove 80% of the refrigerant charge or achieve 4" Hg vacuum, if the compressor is not operating.

Be able to remove 80% of the refrigerant charge or achieve 4" Hg vacuum.

Be able to remove 70% of the refrigerant charge or achieve 4" Hg vacuum, if the compressor is in operation.

Be able to remove 70% of the refrigerant charge or achieve 4" Hg vacuum.

When using system dependent (passive) recovery, the EPA requires

80% of the refrigerant to be removed if the compressor is not operating.

80% of the refrigerant to be removed if the compressor is operating

90% of the refrigerant to be removed if the compressor is not operating

70% of the refrigerant to be removed if the compressor is operating

While recovering refrigerant, why is it necessary to install a piercing valve on both the high and the low side of a small appliance that has an inoperative compressor?

It will decrease the time of the refrigerant recovery

It will help drain the oil out of the system while recovering the refrigerant.

It will help decrease the rate of refrigerant evaporating

It is just a waste of time and is not necessary at all

If after you install piercing valves on a sealed system you connect your manifold gauges and read 0 psig.

Do not begin the recovery process

You should pressure test the system

Report to the EPA that someone must have vented the refrigerant

technicians becoming certified to buy refrigerants

homeowners maintaining refrigerant logs on all pieces of equipment in the home that contain refrigerant

EPA definition of a small appliance would include

a small residential window air conditioner

EPA 608 100

9th Grade - University

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101 Qs

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9th Grade - University

•

Practice Problem

•

Medium

•

NGSS

HS-PS1-2, HS-ETS1-3, HS-ESS3-4

Standards-aligned

Ken Hassinger

Used 263+ times

FREE Resource

101 questions

Show all answers

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

How many chlorine atoms does it take to destroy 100,000 ozone molecules in the stratosphere?

100

10,000

Tags

NGSS.HS-PS1-2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following refrigerants is a CFC-type refrigerant?

R-22

R-123

R-134a

R-12

Tags

NGSS.HS-PS1-2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following is an example of an HCFC refrigerant?

R-12

R-402

R-22

R-134a

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following refrigerants is considered an HFC-type of refrigerant?

R-134a

R-12

R-22

R-11

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which type of refrigerant has the highest Ozone Depletion Potential (ODP)?

HFC

HCFC

CFC

All have the same ODP.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What effect is ozone depletion having on the environment?

increased ground level ozone (smog)

reduced marine life

reduced crop yields

all of the above

Tags

NGSS.HS-LS2-6

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The abbreviation for refrigerants containing chlorine, fluorine, and carbon is ____.

HFC

HCFC

CFC

HFAC

Tags

NGSS.HS-PS1-2

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EPA 608 100

101 questions

How many chlorine atoms does it take to destroy 100,000 ozone molecules in the stratosphere?

Which of the following refrigerants is a CFC-type refrigerant?

Which of the following is an example of an HCFC refrigerant?

Which of the following refrigerants is considered an HFC-type of refrigerant?

Which type of refrigerant has the highest Ozone Depletion Potential (ODP)?

What effect is ozone depletion having on the environment?

The abbreviation for refrigerants containing chlorine, fluorine, and carbon is ____.

The abbreviation for refrigerants containing hydrogen chlorine, fluorine, and carbon is ____.

The abbreviation for refrigerants containing fluorine, carbon, and hydrogen is ____.

To reprocess refrigerant to meet new product specifications is called ____.

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