Air Quality Questions NEHA Study Guide

8/12/2019 Air Quality Questions NEHA Study Guide

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CDEHSA Outdoor Air Quality Module Questions

1. Which of the following are used to monitor air pollution?a. Hi-vol filterb. Slit samplerc. Electrostatic precipitatord. Both A and B

2. An electro-static precipitatoris used to remove __________ from the aira. Microbiological substancesb. Suspended particulatesc. Corrosive gasesd. Sulfur Dioxide

3. A Hi-vol filteris used to monitor:a. Microbiological factors in airb. Total Suspended Particulatesc. Corrosive Gasesd. Sulfur Dioxide

4. Which standardsare set to protect the publics health?a. Primary Air Quality Standardsb. Public Health Air Quality Standardsc. Federal Air Quality Standardsd. Carbon Monoxide Emission Standards

5. Which of the following is an effective strategy to reduce air pollution?a. Modification of transportationb. Reducing the number of times one mows their lawnc. Reducing wasted. All of the above

6. Health effects of ozone on humans does NOT include:a. Throat irritationb. Shortness of breathc. Chest paind. Throat cancer

7. Wind that blows predominately from one direction over the earths surface is:a. Dominant Windb. Prevailing Windc. Katabatic Windd. Trade Wind

8. A graph showing wind speed and direction at a given location over time is:a. Wind plotb. Wind data graphc. Wind rosed. Wind report

9. The air pollutant ozone can be attributed to which of the following?


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a. Dry cleanersb. Forest Firesc. Automobilesd. All of the above

10.The air pollutant sulfur dioxide can be attributed to which of the following?a. Coal burning power plantsb. Paint shopsc. Volcanoesd. Both A and C

11.Which of the following is NOT classified as a particulate?a. Gasesb. Smokec. Dustd. Mist

12.An inversionoccurs when:a. Warmer less dense air moves over cooler, dense airb. Cooler dense air moves over warmer, less dense air.c. Warmer dense air moves over cooler, less dense aird. Cooler less dense air moves over warmer, dense air

13.When fuel (gasoline, oil or coal) does not sufficiently react with oxygen to form water and carbon dioxide, thicalled:

a. Slow combustionb. Rapid combustionc. Incomplete combustiond. Turbulent combustion

14.Nitrogen oxides, water, carbon dioxide, and carbon monoxide are all resultant compounds of:a. Slow combustionb. Rapid combustionc. Incomplete combustiond. Turbulent combustion

15.When organic materials undergo decomposition due to extreme heat in the absence of oxygen, this process iscalled:

a. Thermal combustionb. Pyrolysisc. Volatile combustiond. Thermolysis

b16.Over a period of three years one contracts asbestosis disease after coming into contact with asbestos. How wou

this disease be classified?

a. Chronicb. Acutec. Symptomatic


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17.Dental office employees may be exposed to which of the following systemic poison?a. Mercuryb. Benzenec. Cadmiumd. Carbon tetrachloride

18.The use of a central air system would be important to check if which of the following occurred?a. Viral Disease outbreakb. Airborne Disease outbreakc. Bacterial Disease outbreakd. Parasitic Disease outbreak

19.What is used to determine whether emissions of smoke are within established limits?a. Ringelmann Chartb. Smoke Chartc. Smoke Particulate Monitord. Pollutant Standards Index Monitor

20.Sulfur Dioxide, Ozone and Hydrogen fluoride are most harmful to:a. Humansb. Plantsc. Riversd. Oceans

21.Pollutants are often trapped within the _________________ of an inversiona. Warm air layerb. Hot air layerc. Cool air layerd. Primary layer

22.What mixes water and gas to remove particulates like rain fall?a. Jet Scrubberb. Hi-vol Filterc. Electrostatic Precipitatord. None of the above

23.The most common occupational ailment is:a. Mesotheliomab. Hepatitisc. Dermatitisd. Silicosis

24. Which diseases result from small particles being inhaled?a. Dermatitis and Silicosisb. Throat Cancer and Asbestosisc. Silicosis and Asbestosisd. Dermatitis and Throat Cancer


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25.Which of the following respiratory diseases is common among coal miners?a. Tuberculosisb. Black lung diseasec. Mesotheliomad. Empyema

26.In Donora, Pennsylvania, in October 1948, what occurred and resulted in up to 70 human deaths?a. Air inversionb. Acid Rainc. Radiation eventd. Release of a toxic gas

27.The guideline for occupational exposures in healthy adults is called:a. Threshold Limit Status (TLS)b. Threshold Limit Value (TLV)c. Threshold for Continuous Exposure (TCE)d. Threshold for Acceptable Exposure (TAE)

28.A fume is:a. Solid particles suspended in gasb. Liquid particles suspended in gasc. Gaseous particles suspended in liquidd. Both A and C

29.For a 320 home subdivision, calculate yearly CO emissions based on the following:Average 3 daily trips per family

Average trip length 11.5 miles

CO emission factor: 1 gram per mile

a. 4.44 tons per yearb. 2,014.8 tons per yearc. 5.52 tons per yeard. 189.04 tons per year

30.Incomplete combustion results in the emission of carbon monoxide. What is its most acute health effect?a. Headacheb. Asphyxiationc. Seizured. Carcinogen

31.Which of the following emit the greatest amount of sulfur oxide?a. Cross-country Truck trafficb. Volcanoesc. Coal combustiond. Biomedical Plants

32.Photo-chemical smog is:a. Smog that reacts with sunlight to create secondary pollutantsb. Smog that can be seen only through a lens


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c. Smog that is caused by the sund. Smog that reacts with sunlight, to rid the air of pollutants

33.Fibers per cc of air is the unit used to measure:a. Dustb. Asbestosc. Filter leveld. All of the above

34.The correct balance of which of the following will most affect ones comfort in a room?a. Air movement, number of people in the room, absolute humidityb. Air movement, absolute humidity and temperaturec. Air movement, relative humidity and temperatured. Number of people in the room, temperature and relative humidity

35.Vehicles and boats emit:a. Nitrogen oxides, hydrocarbons and leadb. Hydrocarbons, ozone and sulfur dioxidec. Carbon monoxide, nitrogen oxides, and hydrocarbonsd. Carbon monoxide, ozone and lead

36.During an event that severely affects air quality, what would be the most appropriate advice to residents of thecommunity?

a. Stay inside your homesb. Tape off all windows and air ductsc. Evacuate your homesd. Wear face masks at all times

37.Which of the following is used to calculate air pollution concentrations?a. Visual Plume Modelb. Pollution Curve Modelc. Gaussian Plume Modeld. Atmospheric Dispersion Model

38.Acid rain is produced by:a. Nitrogen oxides + waterb. Ozone + waterc. Sulfur oxides + waterd. Carbon monoxide + water

39.What filtering process is produced by rain?a. Biofilterb. Absorptionc. Chemisorptiond. Humidifier

40.What deadly gas can be produced from a water heater that is not burning correctly?a. Carbon Monoxide


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Air Quality Questions NEHA Study Guide