Class C Water Operator License Exam questions with correct answers

Ammonia mixed with chlorine gas creates a CORRECT ANSWER-white smoke The most difficult part of a water distribution operator's job. CORRECT ANSWER-furnish a continuous supply Physical connection between a safe and potentially unsafe water source. CORRECT ANSWER-cross connection A distribution system is a CORRECT ANSWER-looped system Dead end mains should be flushed CORRECT ANSWER-every month Excess nitrate causes a condition called CORRECT ANSWER-blue baby syndrome Water hardness is caused by CORRECT ANSWER-calcium and magnesium Sewer mains should be __ft away from water mains. CORRECT ANSWER-9 Water with a pH less than 7 is considered to be CORRECT ANSWER-acidic Bacti records are kept for ____yrs and chemical records are kept for ___yrs. CORRECT ANSWER-5, 10