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1. Coagulation and Flocculation processes are used to:
   
   a. Decrease water temperature b. Soften water c. Separate suspended solids from the water d. Remove residual chlorine
    

2. Most suspended particles possess a:
   
   a. Negative charge b. Positive charge c. None of the above
    

3. Coagulants are added to neutralize the charge carried by suspended solids:
   
   a. True b. False
    

4. Flocculation is a:
   
   a. Slow mix process b. Rapid mix process c. Takes from 1-4 minutes d. None of the above
    

5. The flocculation process produces:
   
   a. Microflocs b. Pinflocs c. None of the above
    

6. Design contact times for the flocculation process range from:
   
   a. 15 minutes to 1 hour or more b. 1 - 4 hours c. 1 - 3 minutes d. Over 12 hours
    

7. Sedimentation basins:
   
   a. Are used in conventional treatment plants b. Settle out the flocs c. Proceed filtration d. All of the above
    

8. Retention Time = GMP Flow   
                             Basin Volume
   
   a. True b. False
    

9. Combination treatment units incorporate:
   
   a. Coagulation b. Flocculation c. Sedimentation d. All of the above
    

10.  Inorganic coagulants are the most expensive alternative:
    
    a. True b. False
     

11. Polymers do not consume alkalinity:
    
    a. True b. False
     

12.  Polymers must be approved for potable water use by the regulating agency:
    
    a. True b. False
    
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