Question 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. |
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Impingers are plastic containers also known as a bubbler or gas-wash bottle. |
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The LOD or the LOQ represent the largest amount of contaminant that can be reliably detected and quantified. |
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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
What term was first used to measure and describe bioeffluent odor load produced by a standard building occupant (person)?
Answer
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pCi |
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BOD (biological oxygen demand) |
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IAQN (IAQ normal) |
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Olf |
4 points
Question 3
Which of the following are nonspecific instruments that are most often used to detect organic vapors, such as alcohols, ketones, and ethers?
Answer
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Wheatstone bridges |
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ICP analysis |
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PID’s |
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Sorbent tubes |
4 points
Question 4
Match the correct instrument or technique with its principle of analysis and pertinent analytes.
Answer
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Infrared spectrometry can use column travel time to identify metals. |
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ICP can use intensity of absorbance at specific wavelengths to identify organic compounds. |
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MS uses intensity of ions formed to identify metals and organics. |
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AA uses patterns of energy absorption to identify organics. |
4 points
Question 5
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
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250 C |
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24.450 C |
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24.45 |
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22.5 ppm/mg |
4 points
Question 6
Most HVAC systems fall into all of the following main types EXCEPT:
Answer
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multiple zone and variable volume. |
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multiple zone and constant volume. |
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single-zone and constant volume. |
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single-zone and intermittent volume. |
4 points
Question 7
What fungal infection usually affects the lungs, resulting in allergic response, or serious injury, sometimes even causing death?
Answer
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Legionnaire’s disease |
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Histoplasmosis |
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Hanta Virus |
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Sick building syndrome |
4 points
Question 8
Which of the following is a FALSE statement?
Answer
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The pCi unit is used to describe radon and its daughters in terms of their activity. |
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The OSHA regulation on asbestos does require air monitoring during an abatement action. |
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The 1995 revisions to the OSHA regulations for asbestos require that building owners identify the asbestos-containing materials present in their buildings. |
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Radon is a direct decay product of uranium-238. |
4 points
Question 9
Which of the following statements is TRUE?
Answer
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Mold, mildew, and other microbes growing on filter media can be caused by wet or dirty filters. |
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Sampling in the presence of interfering compounds will not cause errors in air sampling. |
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The response of a direct-reading instrument to a particular gas does not depend on what gas was used to calibrate the instrument. |
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Nephelometry depends upon MS not GC instrumentation. |
4 points
Question 10
The most commonly used filter is _________.
Answer
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PVC filter |
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Glass fiber filter |
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Teflon filter |
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MCEF filter |