10 Questions

profileAccu123

Question 1

  1.  

Which of the following statements is TRUE?

Answer

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The breathing zone is defined as a two-foot diameter sphere around the worker's head and shoulders.

[removed]

 

Impingers are plastic containers also known as a bubbler or gas-wash bottle.

[removed]

 

The LOD or the LOQ represent the largest amount of contaminant that can be reliably detected and quantified.

[removed]

 

BEIs, while not a substitute for TLVs or PELs, are useful as complementary data points in evaluating a worker's absorption of a hazardous material.

4 points  

Question 2

  1.  

What term was first used to measure and describe bioeffluent odor load produced by a standard building occupant (person)?

Answer

[removed]

 

pCi

[removed]

 

BOD (biological oxygen demand)

[removed]

 

IAQN (IAQ normal)

[removed]

 

Olf

4 points  

Question 3

  1.  

Which of the following are nonspecific instruments that are most often used to detect organic vapors, such as alcohols, ketones, and ethers?

Answer

[removed]

 

Wheatstone bridges

[removed]

 

ICP analysis

[removed]

 

PID's

[removed]

 

Sorbent tubes

4 points  

Question 4

  1.  

Match the correct instrument or technique with its principle of analysis and pertinent analytes.

Answer

[removed]

 

Infrared spectrometry can use column travel time to identify metals.

[removed]

 

ICP can use intensity of absorbance at specific wavelengths to identify organic compounds.

[removed]

 

MS uses intensity of ions formed to identify metals and organics.

[removed]

 

AA uses patterns of energy absorption to identify organics.

4 points  

Question 5

  1.  

When converting from mg/m to ppm, or from ppm to mg/m, the constant that represents the volume, in liters, of one mole of gas at STP is _________.

Answer

[removed]

 

250 C

[removed]

 

24.450 C

[removed]

 

24.45

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22.5 ppm/mg

4 points  

Question 6

  1.  

Most HVAC systems fall into all of the following main types EXCEPT:

Answer

[removed]

 

multiple zone and variable volume.

[removed]

 

multiple zone and constant volume.

[removed]

 

single-zone and constant volume.

[removed]

 

single-zone and intermittent volume.

4 points  

Question 7

  1.  

What fungal infection usually affects the lungs, resulting in allergic response, or serious injury, sometimes even causing death?

Answer

[removed]

 

Legionnaire's disease

[removed]

 

Histoplasmosis

[removed]

 

Hanta Virus

[removed]

 

Sick building syndrome

4 points  

Question 8

  1.  

Which of the following is a FALSE statement?

Answer

[removed]

 

The pCi unit is used to describe radon and its daughters in terms of their activity.

[removed]

 

The OSHA regulation on asbestos does require air monitoring during an abatement action.

[removed]

 

The 1995 revisions to the OSHA regulations for asbestos require that building owners identify the asbestos-containing materials present in their buildings.

[removed]

 

Radon is a direct decay product of uranium-238.

4 points  

Question 9

  1.  

Which of the following statements is TRUE?

Answer

[removed]

 

Mold, mildew, and other microbes growing on filter media can be caused by wet or dirty filters.

[removed]

 

Sampling in the presence of interfering compounds will not cause errors in air sampling.

[removed]

 

The response of a direct-reading instrument to a particular gas does not depend on what gas was used to calibrate the instrument.

[removed]

 

Nephelometry depends upon MS not GC instrumentation.

4 points  

Question 10

  1.  

The most commonly used filter is _________.

Answer

[removed]

 

PVC filter

[removed]

 

Glass fiber filter

[removed]

 

Teflon filter

[removed]

 

MCEF filter

 

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