Chlorine - Study guides, Class notes & Summaries

TCEQ class c water license exam questions and answers 100% pass State Agency responsince for enforcing the safe drinking water act in Texas Texas Commission on environmental Quality What minerals can cause water hardness Calcium and magnesium A public water system must at all times provide Adequate quantity of water, pressure, and disinfection A source groundwater would be aquifer Fecal coliform organisms sometimes found in water supplies are an indication that Water supply is contaminated,...

EPA 608 universal with correct Answers Refrigeration technicians who violate the Clean Air Act can: - After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - Refrigerant that is recovered can be returned to: Refrigerant can not be called "reclaimed" unless it: - . The EPA can require a technician to demonstrate their ability to perform proper procedures for recovering and/or recycling refrigerant. Failure to demonstrate competency can re...

What is the most important factor affecting the useful life of service lines? - Answer It is the ability of the material to resist internal and external corrosion When does Suction Head exist? - Answer Suction head exists when the source of supply is above the centerline of the pump. What is Net positive Suction Head (NPSH) - Answer NPSH is the pressure under which water enters the eye of the impeller in a centrifugal pump. Insufficient NPSH is the main cause of pump cavitation Ex...

Depth markings should be - ANSWER clearly visible by people in the water. Wading pool and spa drains must be - ANSWER anti-vortex AND secured. Pool drains must be - ANSWER secured and fastened with screws if holes are present. If at any time the filter equipment, chemical feed system, pump stops working, or the main drain cover has been removed or is broken, the pool must - ANSWER be closed immediately Pool must have - ANSWER 1.0-10.0ppm Free Chlorine & 2.0-10.0ppm Bromine Wading ...

to lower pH add: - Answer- muriatic acid carbon dioxide to increase pH add: - Answer- sodium carbonate sodium hydroxide sodium sesquicarbonate the acceptable pH range is: a) 6.8-7.0 b) 7.2-7.8 c) 7.0-7.4 d) none of the above - Answer- b) 7.2-7.8 the ideal pH range is: a) 7.4-7.6 b) 7.8-8.0 c) 6.8-7.4 - Answer- a) 7.4-7.6 free chlorine is a(n): a) oxidizer b) stabilizer c) active disinfectant - Answer- c) active disinfectant it is common practice to maintain free chlor...

An amperometric titration is often used when measuring Residual chlorine The most important reason for chlorinating effluent is Disinfection Chlorination serves primarily to destroy or deactivate disease-producing microorganisms When wastewater samples are chlorinated and the pH is lowered HCLO is formed Hypochlorous acid Which of the following constituents is the best disinfecting agent? HClO What is most likely to interfere with the DPD test? Oxidized man...

Milady Chapter 21 Workbook Exam Questions With Complete Solutions 1. How often do clients who color their hair usually visit the salon? - CORRECT ANSWER Every 3-12 weeks 2. One of the most creative, challenging, and inspiring salon service is __________. - CORRECT ANSWER Haircoloring 3. Haircoloring has the potential for being one of the most __________ areas in which a stylist can choose to work. - CORRECT ANSWER Creative 4. List the reasons why a cosmetologist sho...

Water Distribution 1 Questions and Answers 100% CorrectWater Distribution 1 Questions and Answers 100% CorrectWater Distribution 1 Questions and Answers 100% CorrectWater Distribution 1 Questions and Answers 100% CorrectHead is measured in - ANSWER-feet A plat is - ANSWER-A map Which type of valve will prevent the collapse of a pipe - ANSWER-Air-and-vaccume relief valve The highest degree of protection of a coated steel pipe is - ANSWER-cathodic protection At which time of day is the...

Hair follicle - Which of the following is not parental route? Coagulation - Which of the following is NOT a component of invasiveness? All of the above (capsule, cell wall, hyaluronidase) - Which of the following components are part of invasiveness? Exotoxins - __________ are very specific Lipopolysaccharides - Which of the following are endotoxins? They are killed at a constant rate - What is the rate of Microbial death a manual in vitro diagnostic device used by laboratories to determin...

EPA 608 Universal Exam ( ACTUAL EXAM ) Questions With Verified Solutions| ALREADY PASSED. Refrigeration technicians who violate the Clean Air Act can: - - ANSWER Lose their EPA certification, be fined, be required to appear in Federal court. After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - - ANSWER recovery and recycling. Refrigerant that is recovered can be returned to: - - ANSWER the same system or other systems owned by the same...