A&B Test Questions - Florida Rural Water Association

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35. Zeta potential is nota. an electrical charge between particlesb. an attracting force between particlesc. a repelling force between particlese. a force opposite the van der wald force36. Packing glands on most centrifugal pumps should bea. not allowed to leakb. allowed to leak slightlyc. allowed to leak 5.5 MGDd. allowed to leak .10 GPM37. The anion usually found in highest concentrations in natural waters isa. fluorideb. nitratec. calcium carbonated. bicarbonate38. Specific conductance is an Indirect measure ofa. pHb. total solidsc. dissolved solidsd. suspended solids39. <strong>Water</strong> with a dissolved solids concentration of 1500 ppmmay be classified asa. slightly salineb. moderately salinec. very salined. brine40. Which of the following Inorganic substances exceeds the MCLa. arsenic 0.01 mg/lb. nitrate 15.00 mg/lc. barium 0.07 mg/ld. silver 0.05 mg/l52
41. When coliform occurs in 3 of the 5 ten ml portions of a single standard samplea. daily samples must be collected until two consecutivesatisfactory samples are obtainedb. the water main must be chlorinatedc. public notification is requiredd. all of the above53
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 30 and 31: Iron and Manganese Removal1. The mi
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

A&B Test Questions - Florida Rural Water Association

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