ABC Class 1 Physical/Chemical Operator Exam (Questions + Answers) Verified 100% Correct!!

1. How much does a cubic foot of water weigh? - Answer-a. 8.34 lbs b. 7.48 lbs c. 62.38 lbs d. 15.82 lbs 2. What is the best way to store a 150# chlorine gas cylinder? - Answer-a. On its side b. Above ground level c. Upright, secured from falling 3. Which is not a proper alternative for treatment of industrial wastewater? - Answer-a. Pretreatment by the IWTS followed by discharge to the POTW b. Direct discharge to receiving waters c. Discharge to POTW for treatment d. Complete treatment by IWTS and discharge to receiving waters 4. Where should an SCBA be stored for use in a chlorination facility? - Answer-a. At the first aid station b. In the chlorination facility, just inside the door c. In the employee locker room d. At the chlorination facility, just outside the door 5. Which is the best method for obtaining representative samples? - Answer-a. Time-proportional sampling b. Flow-proportional sampling c. Equal volume sampling taken every two hours d. Grab sampling6. What information can be obtained from a chain-of-custody? - Answer-a. Procedures for testing of wastewater samples b. List of all people who have come in contact with the samples c. Sampling requirements of the wastewater permit d. Evidence log from custody hearing 7. What is the purpose of locking out an electrical motor during maintenance? - Answer-a. Keep operators out of the electrician's office b. Keep energy usage down c. Prevent people from entering the area d. Prevent the motor from starting