WasteWater Operator class C
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WasteWater Operator class C exam 
practice review 
When Chlorine is combined with water what type of pipe should be used? 
A. Ductile iron 
B. Asbestos concrete 
C. PVC 
D. Carbon Steel Ans- C. PVC 
A good settling sludge would consist of what type of protozoa? 
A. Rotifers and nematodes 
B. Amoebas and Flagellates 
C. Stalked ciliates and mastagoria 
D. Free swimmers and stalk ciliates Ans- D. Free swimmers and stalk ciliates 
What is Phenolphylein used for in titration 
A. Oxidizer 
B. Indica...
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WasteWater Operator class C exam 
practice review 
When Chlorine is combined with water what type of pipe should be used? 
A. Ductile iron 
B. Asbestos concrete 
C. PVC 
D. Carbon Steel Ans- C. PVC 
A good settling sludge would consist of what type of protozoa? 
A. Rotifers and nematodes 
B. Amoebas and Flagellates 
C. Stalked ciliates and mastagoria 
D. Free swimmers and stalk ciliates Ans- D. Free swimmers and stalk ciliates 
What is Phenolphylein used for in titration 
A. Oxidizer 
B. Indica...