Select the correct answer from the drop down box which follows each question. 
When you are finished , click the "submit quiz" button to check your answers.

1. Filter are classified by:
   
   a. Filtration area b. Filter media c. Type of operation d. All of the above
    

2. Rapid sand filters can accommodate filter rates 40 times those of slow sand filters.
   
   a. True b. False
    

3. The filter sand used in rapid sand filters is manufactured specifically for the purpose of water filtration.
   
   a. True b. False
    

4. High rate filters operate __________ times that of rapid sand filters.
   
   a. 1 - 2 b. 3 - 4 c. 5 - 6 d. 6 - 7
    

5. Filtration rates are different for gravity and pressure filters.
   
   a. True b. False
    

6. Name the steps involved in filter operation.
   
   a. Filtering b. Backwashing c. Filter to waste d. All of the above
    

7. Suspended particles caused turbidity in water.
   
   a. True b. False
    

8. A normal backwash rate is ________ of filter surface area.
   
   a. 6 - 10 gpm per sq ft b. 10 - 14 gpm per sq ft c. 12 - 15 gpm per sq ft d. 16 - 18 gpm per sq ft
    

9. Polymers used as filter aids have only a positive charge to attract suspended particles.
   
   a. True b. False
    

10. Name the three major filter problems that may occur:
    
    a. Chemical treatment before the filter b. Control of filter flow rate c. Backwashing d. All of the above
    
    
    Name:    

    Title:       

    Address/Employer: 

    E-mail:     

    Additional Comments: