A&B Test Questions - Florida Rural Water Association

24. A well water has a pH of 6.2, alkalinity 540, total hardness 320, calcium hardness 120,turbidity 5, color 300, TDS 100, TOC 35. Which treatment process should be useda. disinfection/filtrationb. lime—soda ashc. conventional lime softeningd. Ion exchangee. R0f. Electrodialysis25. When using a pH meter the deterioration in the electrode must be corrected bya. adjusting the temp controlb. slope control adjustmentc. storing the electrode in pH buffer 7d. all of the above26. The chlorine residual method that is the standard for regulatory purposes isa. amperometric titrationb. color comparisonc. DPDd. orthotolidine27. A glass tube partially filled with liquid that measures gas pressure is called aa. pressure gaugeb. hydrometerc. rotameterd. manometer28. Which of the following statements is true regarding ground water movementa. Preésure differences between the areas of recharge and discharge have little effecton rate of flow.b. The zone of capillary fringe increases the flow by draining water into the aquifer.c. Ground water moves continually, even though the movement may be slow.d. Seasonal variations have little effect on the slope of the water table.29. The negative electrode where reduction occurs is calleda. anionb. anodec. cathoded. cation50