IAHCSMM question and answers rated A+ already passed 2023

IAHCSMM question and answers rated A+ already passed 2023 Conductivity (of water) - correct answer A measurement of the ability of water to carry an electrical current. Ohm - correct answer A unit of measurement that expresses the amount of resistance to the flow of an electric current. Deionization - correct answer The process by which ions with an electrical charge are removed from water. Reverse osmosis - correct answer The diffusion (flowing) of water through a semi-permeable membrane to eliminate impurities that it contains. Silicate - correct answer A mineral commonly found in water that is derived from silca found in quartz and other components. The ideal level in water used for cleaning is: - correct answer 100 ppm or less. Purified water should have a pH of: - correct answer 6.5 - 7.5 Chloride - correct answer A compound commonly found in water that is created when chlorine is combined with another element or radical. (Examples: a salt or hydrochloric acid.) Chlorides are always found in ________ water. - correct answer treated. Particles - correct answer Usually small solid objects such as pieces of rusted piping, and minuscule pieces of rubber, plastic, filter elements, and other materials. Turbidity - correct answer Occurs when water contains sediments or solids that, when stirred, make the water appear cloudy. Tap water - correct answer Water that has been treated, and is acceptable for drinking. Microns - correct answer Unit of measurement; 1/1000 of a millimeter or 1/25,000 of an inch, or one millionth of a meter. (Note: a meter equals 39.37 inches.) Granular Activated Charcoal (GAC) - correct answer Is used to remove chlorides in water. Softeners - correct answer Used to removed the calcium and magnesium in the water, and the word, "softened," describes the result of the process. Cation resin tank - correct answer A tank into which untreated hard water flows, and in which sodium ions are exchanged for calcium and magnesium ions to produce soft water. Distillation - correct answer Removes dissolved solids, gasses and organics, along with particles, bacteria, pyrogens (pus-producing organisms,) and endotoxins. Hard water stains - correct answer Appear as water spots or gray areas on the inside chamber of cleaning machines and on instruments. Bluish or rainbow-type stains - correct answer Are caused by iron and silicates in the water. Powdery stains or chalky build-ups - correct answer Result from calcium and magnesium in the water. Deionization systems - correct answer Are used for heating/cooling therapy units, and for the final rinse water in manual and automated cleaning processes.