Review Quiz: Air Quality And Environment! Hardest Trivia

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Environment Quizzes & Trivia

This exam was offered as part of A&WMA's online course, "GENAQ-100E: Environmental Practices Review Specialty Course: Air Quality" in 2008.


Questions and Answers
  • 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. 
    • 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. 
    • 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

  • 26. 
    In a reverse air baghouse, particulate is collected on:
    • A. 

      The inside of the bag

    • B. 

      The exterior of the bag

  • 27. 
    The inlet temperature to a baghouse needs to be above the dewpoint to prevent blinding the bags by condensing moisture in the gas. 
    • A. 

      True

    • B. 

      False

  • 28. 
    Which of the fabrics listed below would have a good resistence to acid and alkaline attack and also have a high temperature limitation?
    • A. 

      Cotton

    • B. 

      Wool

    • C. 

      Polyester

    • D. 

      Gortex

  • 29. 
    An example of a high energy scrubber would be a:
    • A. 

      Spray tower

    • B. 

      Contact absorber

    • C. 

      Venturi scrubber

    • D. 

      Centrifugal scrubber

  • 30. 
    Henry's law applies if the equilibrium diagram of a system is a straight line.  For most systems, the equilibrium diagram is a straight line if:
    • A. 

      The solution is concentrated

    • B. 

      The solution is dilute

    • C. 

      Water is the solute

    • D. 

      The partial pressure of the absorbate is large

  • 31. 
    In air pollution applications, chemical adsorption is preferable to physical adsorption.
    • A. 

      True

    • B. 

      False

  • 32. 
    The exhaust from a boiler has a CO concentration with a partial pressure of 19.0 mm HG.  Given a standard pressure of 760 mm HG what is the ppm of CO in exhaust? 
    • A. 

      2,500

    • B. 

      5,000

    • C. 

      25,000

    • D. 

      50,000

  • 33. 
    What is a flue gas treatement process that can be used to reduce NOx in a combustion unit:
    • A. 

      Electrostatic precipitation

    • B. 

      Selective catalytic reduction

    • C. 

      Limestone injections

    • D. 

      Carbon injections

  • 34. 
    What formula represents the ideal gas law?
    • A. 

      PV=nRT

    • B. 

      PVM = RTstd

    • C. 

      V = TP

    • D. 

      PV = MwRT

  • 35. 
    If a certified Method 9 observer reads 75% opacity, how much light transmission can be seen through the plume?
    • A. 

      10%

    • B. 

      25%

    • C. 

      50%

    • D. 

      75%

  • 36. 
    The Discharge Electrode in an Electrostatic Precipitator is usually:
    • A. 

      Neutrally charged

    • B. 

      Positively charged

    • C. 

      Negatively charged

  • 37. 
    An inversion condition exists when you have:
    • A. 

      Cool air above warm air

    • B. 

      No wind

    • C. 

      Cumulus clouds

    • D. 

      Warm air above cool air

  • 38. 
    In the absorption process you have the transfer of a gaseous component from the gas phase to the liquid phase.
    • A. 

      True

    • B. 

      False

  • 39. 
    In an absorber, if the temperature of the liquid increases the solubility of the gaseous component into the liquid normally:
    • A. 

      Stays the same

    • B. 

      Increases

    • C. 

      Decreases

  • 40. 
    The attractive forces that hold a gas to the surface of a solid are known as:
    • A. 

      Negatively charged forces

    • B. 

      Van der Waals Forces

    • C. 

      Positively charged forces

    • D. 

      Henry's Law Force

  • 41. 
    The principal commercial adsorbent used for the adsorption of organic vapors is:
    • A. 

      Silica gel

    • B. 

      Carbon

    • C. 

      Alumina

    • D. 

      Stainless steel mesh

    • E. 

      Zeolite

  • 42. 
    A packed countercurrent flow absorber is more efficient than a spray tower because:
    • A. 

      The pressure drop increases

    • B. 

      The tank diameter is usually larger

    • C. 

      The tower height is increased

    • D. 

      The gas-liquid interfacial area is increased

  • 43. 
    A condenser is not an effective way to control alcohol vapors.
    • A. 

      True

    • B. 

      False

  • 44. 
    Which of the following oxidizers would be the most cost effective?
    • A. 

      Thermal oxidizer

    • B. 

      Regenerative thermal oxidizer

    • C. 

      Catalytic oxidizer

  • 45. 
    In the combustion process, if you need two moles of oxygen to combust one mole of methane, how many moles of air would be needed?
    • A. 

      2

    • B. 

      3.99

    • C. 

      7.53

    • D. 

      9.53

    • E. 

      13.28

  • 46. 
    NOx control is usually accomplished through what process?
    • A. 

      Absorption

    • B. 

      Reduction

    • C. 

      Oxidation

    • D. 

      Adsorption

  • 47. 
    In the combustion of natural gas, most of the NOx produced is considered:
    • A. 

      Fuel NOx

    • B. 

      Thermal NOx

    • C. 

      Residual NOx

  • 48. 
    Which of the following fuels would have the highest nitrogen content:
    • A. 

      Natural gas

    • B. 

      No. 2 oil

    • C. 

      No. 6 oil

    • D. 

      Coal

  • 49. 
    Bituminous coal fired utilities usually use what process to control SO2?
    • A. 

      Limestone process

    • B. 

      Dry scrubbing

    • C. 

      Magnesium oxide process

    • D. 

      Dry injection

  • 50. 
    Emission inventories are usually required for all stationary sources regardless of their size.
    • A. 

      True

    • B. 

      False

  • 51. 
    In the combustion process, if excess air is provided the mixture is considered to be:
    • A. 

      Rich

    • B. 

      Lean

  • 52. 
    The PM-2.5 sampling refers to:
    • A. 

      Particulate greater than 2.5 microns

    • B. 

      Particulate less than 2.5 microns

    • C. 

      All particle matter in a stack

    • D. 

      The particles collected in the back half of a sampling train

  • 53. 
    If pollutants from an elevated, buoyant source can be carried down to the ground when a nocturnal surface inversion is dissipated by datime heating, you normally have a process called:
    • A. 

      Fanning

    • B. 

      Looping

    • C. 

      Coning

    • D. 

      Fumigation

  • 54. 
    In the stack sampling process, isokinetic sampling is needed when sampling for:
    • A. 

      Particulates

    • B. 

      NOx

    • C. 

      Sulfur Oxides

    • D. 

      Carbon Monoxide

  • 55. 
    Most risk assessments values derived for exposure hazardous wastes and materials are given in terms of:
    • A. 

      Birth defects

    • B. 

      Cancer risks

    • C. 

      Mutagenic effects

    • D. 

      Reproduction dysfunctions

  • 56. 
    Which of the following is not a chronic health effect?
    • A. 

      Genetic damage

    • B. 

      Degenerative illness

    • C. 

      Mercury build-up

    • D. 

      Immediate exposure

  • 57. 
    Federal Land Managers are most interested in reducing what in Class 1 areas:
    • A. 

      SO2

    • B. 

      NOx

    • C. 

      Visibility

    • D. 

      Particulate matter

  • 58. 
    Most gaseous continuous emissions monitors (CEMs) are:
    • A. 

      Extractive monitors

    • B. 

      In-situ monitors

    • C. 

      Remote monitors

    • D. 

      In line gas analysis

  • 59. 
    The most common approach to dispersion modeling is a gradient modeling approach.
    • A. 

      True

    • B. 

      False

  • 60. 
    Which of the following inventories is not needed in conducting an ozone model?
    • A. 

      Mobile sources

    • B. 

      Biogenic

    • C. 

      Point source

    • D. 

      Toxic release inventory

  • 61. 
    Which type of inventory can be considered the most reliable?
    • A. 

      Point source

    • B. 

      Mobile source

    • C. 

      Area source

    • D. 

      Natural source

  • 62. 
    Standard particulate source testing is conducted under what EPA method?
    • A. 

      Method 3

    • B. 

      Method 4

    • C. 

      Method 5

    • D. 

      Method 25

  • 63. 
    What Title of the 1990 Clean Air Act deals with Toxic Pollutants:
    • A. 

      Title I

    • B. 

      Title III

    • C. 

      Title IV

    • D. 

      Title V

  • 64. 
    What source sampling method is used to determine total gaseous non-methane organic emissions using a flame ionization detector?
    • A. 

      Method 25

    • B. 

      Method 25A

    • C. 

      Method 25B

    • D. 

      Method 20

  • 65. 
    Visible light occurs in the 400-700 nm range with the red around 400 and the violets around 700. 
    • A. 

      True

    • B. 

      False

  • 66. 
    When studying the absorption of light gases, what law is uesed to relate the amount of light absorbed to the concentration of the gas?
    • A. 

      Ideal Gas Law

    • B. 

      Henry's Law

    • C. 

      Beer-Lambert Law

    • D. 

      Avogadro Principal

  • 67. 
    Opacity monitors are typically:
    • A. 

      In-situ monitors

    • B. 

      Extractive monitors

    • C. 

      Remote monitors

  • 68. 
    What is the molecular weight of air assuming there is 79% nitrogen and 21% oxygen:
    • A. 

      24.82

    • B. 

      28.84

    • C. 

      32.4

    • D. 

      39.9

  • 69. 
    If you had a coal with a BTU content of 10,000 BTU/lb, and 2.5% S and all of it is emitted into the atmosphere, what would be the emission rate in lbs/MM BTU?
    • A. 

      2.5

    • B. 

      4.0

    • C. 

      5.0

    • D. 

      10

  • 70. 
    Which of the following would not be a fugitive emission?
    • A. 

      Baghouse exhaust

    • B. 

      Open burning

    • C. 

      Road dust

    • D. 

      Building vent

  • 71. 
    Good engineering practice stack height is generally considered:
    • A. 

      1.5 x bldg. ht.

    • B. 

      2.0 x bldg. ht.

    • C. 

      2.5 x bldg. ht.

    • D. 

      5.0 x bldg. ht.

    • E. 

      Above 150 feet

  • 72. 
    A pound of activated carbon has a surface area equal to about:
    • A. 

      5 acres

    • B. 

      25 acres

    • C. 

      75 acres

    • D. 

      125 acres

  • 73. 
    Stage II collection at gasoline stations refers to the control of gaseous vapors from the underground storage tank.
    • A. 

      True

    • B. 

      False

  • 74. 
    A cascade impactor stage's cut size separate ___% of the particles of that size:
    • A. 

      15

    • B. 

      50

    • C. 

      84

    • D. 

      100

  • 75. 
    Indoor air quality is strongly affected by:
    • A. 

      Outside temperature

    • B. 

      The number of air changes per hour

    • C. 

      Wind speed

    • D. 

      House insulation

  • 76. 
    Which of the following is not a common exposure route for environmental contaminants:
    • A. 

      Injection

    • B. 

      Inhalation

    • C. 

      Ingestion of food

    • D. 

      Ingestion of water