Wtp Fs Test

51 Questions | Total Attempts: 60

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Sentence Quizzes & Trivia

Pre-test FSCC. second sentence,


Questions and Answers
  • 1. 
    Which of the following well types is most protected from surface contamination?
    • 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. 
    What is the pressure in pounds per square inch at the bottom of a standpipe filled to a height of 47 feet?
    • 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. 
    Which of the following elements cause hardness in water?
    • 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. 
    How many pounds of sodium hypochlorite containing 8% available chlorine by weight would be needed to provide 25 pounds of chlorine.
    • A. 

      50.0

    • B. 

      78.1

    • C. 

      200.0

    • D. 

      312.5

  • 16. 
    What effect will the addition of lime, caustic soda, or soda ash have on the pH of water ?
    • A. 

      Stabilize

    • B. 

      Lower

    • C. 

      Increase

    • D. 

      Have no effect

  • 17. 
    Which of the following best describes the characteristics of chlorine gas when used for disinfection in drinking water?
    • 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. 
    Which of the following best describes "chlorine demand"?
    • 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. 
    Which of the following chemicals will most likely keep iron in suspension?
    • 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