Social Sciences > QUESTIONS & ANSWERS > Class C Water Operator License Exam (2022/2023) Already Passed (All)
Class C Water Operator License Exam (2022/2023) Already Passed
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Class C Water Operator License Exam (2022/2023) Already Passed Ammonia mixed with chlorine gas creates a ✔✔white smoke The most difficult part of a water distribution operator's job. ✔✔furn... ish a continuous supply Physical connection between a safe and potentially unsafe water source. ✔✔cross connection A distribution system is a ✔✔looped system Dead end mains should be flushed ✔✔every month Excess nitrate causes a condition called ✔✔blue baby syndrome Water hardness is caused by ✔✔calcium and magnesium Sewer mains should be __ft away from water mains. ✔✔9 Water with a pH less than 7 is considered to be ✔✔acidic Bacti records are kept for ____yrs and chemical records are kept for ___yrs. ✔✔5, 10 Bacti samples have to be returned to the lab within ___hrs of the collection time. ✔✔30 Color in the water supply should be less than _____ units. ✔✔15 [Show More]
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