Wtp Fs Test

51 Questions

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Sentence Quizzes & Trivia

Pre-test FSCC. second sentence,


Questions and Answers
  • 1. 
    • A. 

      Artesian well

    • B. 

      Infiltration gallery

    • C. 

      Rock well

    • D. 

      Shallow well

  • 2. 
    One major factor that leads to reservoir turnover is
    • A. 

      The lower strata being colder than the upper strata.

    • B. 

      The upper strata becoming denser and sinking to the bottom.

    • C. 

      The upper and lower strata reaching the same temperature.

    • D. 

      Decaying organic matter causing a gaseous movement.

  • 3. 
    • A. 

      10.0

    • B. 

      15.0

    • C. 

      20.3

    • D. 

      108.5

  • 4. 
    One gallon per minute equals ____ gallons per day.
    • A. 

      24

    • B. 

      60

    • C. 

      550

    • D. 

      1440

  • 5. 
    • A. 

      Sodium and potassium

    • B. 

      Nitrogen and sulfur

    • C. 

      Fluoride and oxygen

    • D. 

      Calcium and magnesium

  • 6. 
    Chlorine demand increases when _____ increases.
    • A. 

      Alkalinity

    • B. 

      Organic matter

    • C. 

      Phosphate concentration

    • D. 

      PH

  • 7. 
    Chlorine is most commonly used in water treatment for:
    • A. 

      Disinfection.

    • B. 

      Organic matter

    • C. 

      Phosphate concentration

    • D. 

      PH

  • 8. 
    Sedimentation is a process that _____ suspended matter.
    • A. 

      Settles

    • B. 

      Coagulates

    • C. 

      Flocculates

    • D. 

      Filter

  • 9. 
    Fusible plugs on chlorine cylinders are designed to melt at:
    • A. 

      80 F

    • B. 

      100 F

    • C. 

      135 F

    • D. 

      158 F

  • 10. 
    In general, when the pH of treated water is below 6.5 indicates which of the following?
    • A. 

      High alkalinity

    • B. 

      A free chlorine residual greater then 1.0 MG/L

    • C. 

      Water that tends to be corrosive.

    • D. 

      Extremely high total solids contact.

  • 11. 
    The main objection to "red water" is that it:
    • A. 

      Causes pipes to corrode

    • B. 

      Creates hardness

    • C. 

      Increases trihalomethanes (THMs)

    • D. 

      Stains plumbing and clothes.

  • 12. 
    One cubic foot of water weights:
    • A. 

      .433 pounds

    • B. 

      7.48 pounds

    • C. 

      8.3 pounds

    • D. 

      62.4 pounds

  • 13. 
    Daily consumption of gaseous chlorine may be checked by:
    • A. 

      Chlorine demand.

    • B. 

      A pressure reducer.

    • C. 

      Chlorine residual.

    • D. 

      A platform scale.

  • 14. 
    The permissible exposure limit (PEL) for chlorine is:
    • A. 

      0.05 Parts per million.

    • B. 

      0.5 Parts per million.

    • C. 

      1 parts per million.

    • D. 

      5.0 parts per million.

  • 15. 
    • A. 

      50.0

    • B. 

      78.1

    • C. 

      200.0

    • D. 

      312.5

  • 16. 
    • A. 

      Stabilize

    • B. 

      Lower

    • C. 

      Increase

    • D. 

      Have no effect

  • 17. 
    • A. 

      Colorless, flammable, heavier than air

    • B. 

      Greenish-yellow, nonflammable, lighter than air.

    • C. 

      Greenish-yellow, flammable, lighter than air.

    • D. 

      Greenish-yellow, nonflammable, heavier than air.

  • 18. 
    • A. 

      The difference between the amount of chlorine added and turbidity.

    • B. 

      The difference between the amount of chlorine added and pH

    • C. 

      The difference between the total chlorine residual and the free chlorine residual

    • D. 

      The difference between the amount of chlorine added and the amount of residual chlorine remaining after a given contact time.

  • 19. 
    If an initial sample is positive for total coliforms and a repeat sample is positive for fecal coliform or E. coli, notice to the public must be given by broadcast media (television and radio) within:
    • A. 

      24 hours.

    • B. 

      48 hours.

    • C. 

      72 hours.

    • D. 

      14 days.

  • 20. 
    • A. 

      Chlorine

    • B. 

      Fluoride

    • C. 

      Polyphosphate

    • D. 

      Lime

  • 21. 
    The term "primacy" means the:
    • A. 

      Authority by the states to supersede USEPA drinking water regulations.

    • B. 

      Authority by the USEPA to supersede state drinking water regulations.

    • C. 

      Requirement for states to maintain drinking water regulations more stringent than USEPA regulations.

    • D. 

      Primary authority for implementation and enforcement of drinking water regulations.

  • 22. 
    Lead in drinking water can result in:
    • A. 

      Impaired mental functioning in children

    • B. 

      Prostate cancer in men

    • C. 

      Stomach and intestinal disorders.

    • D. 

      Reduced white blood cell count

  • 23. 
    PH is a measure of
    • A. 

      Conductivity

    • B. 

      Waters ability to neutralize acid

    • C. 

      Hydrogen ion activity

    • D. 

      Dissolved solids

  • 24. 
    Small gaseous chlorine leaks in and around a chlorinator can be detected by the use of:
    • A. 

      Ammonia

    • B. 

      Hypochlorite

    • C. 

      Lime

    • D. 

      Soda ash

  • 25. 
    Killing of pathogenic organisms in water treatment is called:
    • A. 

      Disinfection

    • B. 

      Oxidation.

    • C. 

      Pasteurization.

    • D. 

      Sterilization

  • 26. 
    The only acceptable breathing device to wear while handling chlorine leaks is the:
    • A. 

      Activated carbon canister type

    • B. 

      Potassium tetroxide canister type

    • C. 

      Self-contained breathing apparatus.

    • D. 

      Oxygen supply apparatus.

  • 27. 
    The letters of units "GPM" apperaing on a flow rate indicator in a pumping station mean:
    • A. 

      Gallons per man.

    • B. 

      Gallons per man-hour.

    • C. 

      Gallons per mile of pipe.

    • D. 

      Gallons per minute.

  • 28. 
    Sodium hypochlorite is:
    • A. 

      A commercially available chlorine solution.

    • B. 

      A commercially available dry chlorine compound

    • C. 

      Chlorine that is available in 100- and 150-pound cylinders.

    • D. 

      A reaction product of chlorine and caustic soda.

  • 29. 
    Sodium thiosulfate is used to:
    • A. 

      Buffer chlorine solutions.

    • B. 

      Neutralize chlorine residual.

    • C. 

      Detect chlorine leaks

    • D. 

      Sterilize sample bottles.

  • 30. 
    The presence of total coliforms in drinking water indicates.
    • A. 

      The presence of pathogens.

    • B. 

      The absence of adequate chlorine residual.

    • C. 

      The existence of an urgent public health problem.

    • D. 

      The potential presence of pathogen.

  • 31. 
    A hypochlorinator is:
    • A. 

      Used to measure residual chlorine.

    • B. 

      Used in the treatment of iron and turbidity.

    • C. 

      Used to feed a liquid solution into a water supply.

    • D. 

      Used to measure an adequate amount of chlorine gas into the supply.

  • 32. 
    The problem caused by dissolved carbon dioxide in the water of the distribution system is:
    • A. 

      Increased trihalomethanes (THMs)

    • B. 

      Corrosion

    • C. 

      Excessive encrustation.

    • D. 

      Tastes and odors.

  • 33. 
    The water table is defined as the:
    • A. 

      Pumping water level in a well.

    • B. 

      Upper surface of the groundwater.

    • C. 

      Water level in a reserve.

    • D. 

      Bottom of the aquifer.

  • 34. 
    A primary health risk associated with microorganisms in drinking water is:
    • A. 

      Cancer.

    • B. 

      Acute gastrointestinal diseases.

    • C. 

      Birth defects.

    • D. 

      Nervous system disorders.

  • 35. 
    The granular filtration process is designed to reduce:
    • A. 

      Calcium and magnesium sulfates.

    • B. 

      True color.

    • C. 

      Total dissolved solids.

    • D. 

      Turbidity.

  • 36. 
    • A. 

      .14 day

    • B. 

      1.4 days

    • C. 

      2.8 days

    • D. 

      3.33 days

  • 37. 
    A major health risk associated with nitrites and nitrates is:
    • A. 

      Cancer

    • B. 

      Acute respiratory diseases.

    • C. 

      'blue baby" syndrome.

    • D. 

      Reduced I.Q. in children.

  • 38. 
    A primary source of volatile organic chemical (VOC) contamination of water of supplies is:
    • A. 

      Agricultural pesticides.

    • B. 

      Industrial solvents.

    • C. 

      Acid rain.

    • D. 

      Agricultural fertilizers.

  • 39. 
    The presence of the coliform group of bacteria in water indicates:
    • A. 

      Contamination.

    • B. 

      Inadequate disinfection.

    • C. 

      Improper sampling.

    • D. 

      Taste and odor problems.

  • 40. 
    After 5 years use, a portion of cast iron pipe shows a white scale about 1/2 in thick lining inside. This means:
    • A. 

      Red water will soon become a problem.

    • B. 

      The water has been corrosive.

    • C. 

      The water is chemically unstable and is depositing.

    • D. 

      Water should flow easier since the lining is smooth

  • 41. 
    When calcium hypochlorite is used for disinfecting a water supply, it should be:
    • A. 

      Dissolved in water, allowed to settle, and the supernatant siphoned off and fed into the water system.

    • B. 

      Dissolved in water as a dry chemical then injected into the water system.

    • C. 

      Fed as a dry chemical directly into the pipeline.

    • D. 

      Fed as a dry powder into the clear well.

  • 42. 
    The term "surface runoff" refers to:
    • A. 

      Rainwater that soaks into the ground.

    • B. 

      Rain that returns to the atmosphere from the earth's surface.

    • C. 

      Surface water that overflows the bank of rivers.

    • D. 

      Water that flows into rivers after a rainfall.

  • 43. 
    Aeration is water treatment plants is used to:
    • A. 

      Lower the pH.

    • B. 

      Reduce concentrations of dissolved gases.

    • C. 

      Reduce turbidity.

    • D. 

      Stabilize chlorine residuals.

  • 44. 
    • A. 

      2 hours 10 min

    • B. 

      5 hours 4 min

    • C. 

      35 hours 23 minutes

    • D. 

      76 hours 3 minutes

  • 45. 
    • A. 

      Decrease the strength of the brine used in the regeneration stage.

    • B. 

      Increase backwash flow rates.

    • C. 

      Increase duration of backwash stage.

    • D. 

      Increase duration of service stage.

  • 46. 
    • A. 

      27 feet

    • B. 

      89 feet

    • C. 

      143 feet

    • D. 

      175 feet

  • 47. 
    To protect stored water from contamination, an underground storage reservoir should:
    • A. 

      Be totally airtight.

    • B. 

      Have both the overflow pipe and the vent screened.

    • C. 

      Have cathodic protection

    • D. 

      Have its interior surface coated with an AWWA-approved paint system.

  • 48. 
    A operator uses ____ to test for residual chlorine.
    • A. 

      DPD

    • B. 

      Crestol red

    • C. 

      Methyl orange

    • D. 

      Sulfuric acid

  • 49. 
    • A. 

      Calcium

    • B. 

      Magnesium

    • C. 

      Manganese

    • D. 

      Sodium

  • 50. 
    A granular, white, dry powder used for disinfection is:
    • A. 

      Calcium hypochlorite.

    • B. 

      Chlorinated lime

    • C. 

      Sodium hypochloride.

    • D. 

      Sodium chloride.

  • 51. 
    Converting 75 degrees F to C the answer will be ______?
    • A. 

      57.02 C

    • B. 

      133 C

    • C. 

      13.9 C

    • D. 

      23.9 C