A&B Test Questions - Florida Rural Water Association

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Iron and Manganese Removal1. The mineral other than iron, that may occur in low concentrations and causes stainingproblems on laundry isa. ferricb. magnesiumc. rustd. manganese2. The most effective PH range for iron removala. 6 or lessb. 7 to 8c. 8 to 9d. 9 or higher3. In the greensand process, what chemical is necessary for the process to beeffective?A: chlorineB: limeC: potassium permanganateD: sodium carbonate4: When using aeration, the rate of oxidation of Iron to form Insoluble ferric can be increased by:A: decreassing the temperatureB: raising the pH of the waterC: decreasing the detention timeD: lowering the pH of the water5: Chemical doses being added to control Iron and /or manganese are inadequate if:A: analysis of treated water shows the presence of IronB: there is incomplete conversion of ferric iron to ionic ironC: customers complain of rusty waterD: all of the above30
6: Which one of the following is not a chemical oxidant which could be used to control taste andodor in water supplies?A: chlorineB: chlorine dioxideC: ozoneD: sulfur31
Page 2 and 3: Table of ContentsCHLORINATION AND D
Page 4: 6: Chlorine dioxide reacts with wat
Page 8 and 9: 25: Which one of the following is t
Page 10 and 11: Disinfection By-Products1: Trihalom
Page 12 and 13: Lime Softening1. Minimum hardness t
Page 14 and 15: 11. Using the analyses below, calcu
Page 16 and 17: 21: In spilt treatment, a portion o
Page 18 and 19: 30. What will the dosage rate be fo
Page 20 and 21: Ion Exchange Softening1. Minimum ha
Page 22 and 23: 12. The third stage in the ion exch
Page 24 and 25: 6. Polarization in an RO system is
Page 26 and 27: 7. The primary source of household
Page 28 and 29: 16. A Langlier Index 0 or a Driving
Page 32 and 33: Taste and Odor Removal1. The first
Page 34 and 35: Problem: Marshy, or woody odor. Use
Page 36 and 37: 6. What should you do if test resul
Page 38 and 39: 14. All but one of the choices belo
Page 40 and 41: 6. It is in the middle of the summe
Page 42 and 43: 5. Your feed rate scale for Floccul
Page 44 and 45: 11. You are considering the additio
Page 46 and 47: Water Chemistry1. Which of the foll
Page 48 and 49: 13. Health authorities encourage us
Page 50 and 51: 24. A well water has a pH of 6.2, a
Page 52 and 53: 35. Zeta potential is nota. an elec

A&B Test Questions - Florida Rural Water Association

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