Review Quiz: Air Quality And Environment! Hardest Trivia
This exam was offered as part of A&WMA's online course, "GENAQ-100E: Environmental Practices Review Specialty Course: Air Quality" in 2008.
- 1.Air is a non-homogeneous mixture of gases, solid particles and liquids.
- A.
True
- B.
False
- 2.Most household cleaning products and paints contain:
- A.
Metals
- B.
Volatile organic compounds
- C.
Carbon dioxide
- D.
Nitrogen oxides
- 3.The portion of the atmosphere closest to the earth is called the:
- A.
Stratosphere
- B.
Ionosphere
- C.
Mesosphere
- D.
Troposphere
- 4.By weight how much of the air is contained in the portion of the atmosphere closest to the earth:
- A.
60%
- B.
75%
- C.
80%
- D.
95%
- 5.Which of the following is not a secondary pollutant:
- A.
Nitrates
- B.
Ozone
- C.
SO2
- D.
Sulfates
- 6.Which of the following is not a criteria pollutant:
- A.
Formaldehyde
- B.
Carbon monoxide
- C.
Lead
- D.
Total suspended particulate
- E.
PM-10
- 7.Carbon monoxide has a 500 times greater affinity to hemoglobin in the blood than oxygen.
- A.
True
- B.
False
- 8.Most carbon monoxide deaths are caused by faulty heating systems
- A.
True
- B.
False
- 9.During high temperature combustion what is the predominant type of NOx that is formed:
- A.
NO2
- B.
N2O5
- C.
NO
- D.
None of the above
- 10.Generally the higher the combustion temperature the greater amount of NOx is formed.
- A.
True
- B.
False
- 11.High Ozone levels typically are experienced during periods of :
- A.
Unstable Low Atmospheric Pressure and high temperatures
- B.
Stable High Atmospheric Pressure and high temperatures
- C.
Turbulent mixing in the atmosphere
- D.
Inversions
- 12.What two pollutants are responsible for ozone formation in the lower atmosphere?
- A.
NOx
- B.
SO2
- C.
CO
- D.
VOC
- 13.Particulate matter is either a solid or a liquid during standard atmospheric conditions.
- A.
True
- B.
False
- 14.PM-10 particles have a settling time of approximately:
- A.
3.6 m/hr
- B.
2.0 m/hr
- C.
0.4 m/hr
- D.
Negligible
- 15.From lowest to highest list the following fuels in relationship to their sulfur content:a. Bituminous coalb. No. 2 fuel oilc. No. 6 fuel oild. Natural gase. Antracite coal
- A.
B, c, d, e, a
- B.
D, b, c, e, a
- C.
B, c, d, a, e
- D.
D, b, c, a, e
- 16.What gas is most responsible for forming acidic precipitation?
- A.
SO2
- B.
NOx
- C.
CO
- D.
CO2
- 17.What is the typical pH of natural rainfall?
- A.
3.5
- B.
5.5
- C.
6.0
- D.
7.5
- 18.The smallest particle size collected at 100% efficiency in a cyclone is known as:
- A.
Cut size
- B.
Geometric size
- C.
Aerodynamic mean size
- D.
Critical size
- 19.The average velocity through a 4ft. X 5ft. diameter rectangular stack is 30 feet / sec. What is the volume in acfm?
- A.
600
- B.
60
- C.
3,600
- D.
36,000
- 20.The exhaust from a baghouse stack has a concentration of 0.2 gr./dscf. Given an exhaust of 10,000 scfm what is the emission rate in lbs./hr?
- A.
1.0
- B.
1.7
- C.
3.4
- D.
5.0
- 21.How many cylindrical bags, 6 inches in diameter and 25 feet long, would be needed to filter a particulate laden stream? The total filtering surface area is 4045 square feet.
- A.
15
- B.
25
- C.
103
- D.
150
- E.
300
- 22.What are the two basic mechanisms for particulate collection in a fabric collector:
- A.
Diffusion and precipitation
- B.
Impaction and interception
- C.
Agglomeration and diffusion
- D.
Electrostatic attraction and agglomeration
- 23.The type of flow in a stack is defined by:
- A.
Avagadros Number
- B.
Atomic number
- C.
Reynolds Number
- D.
Bernoulli's Equation
- 24.A coal fired boiler is controlled by a spray dryer, a baghouse, and SCR. Match the pollutant with the control device used:SOxNOxParticulate
- A.
Particulate - baghouse SOx - spraydryer NOx - SCR
- B.
Particulate - spraydryer NOx - baghouse SOx - SCR
- C.
NOx - SCR SOx - spraydryer Particulate - baghouse
- 25.The above collectors are arranged in:
- A.
Series
- B.
Parallel
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