Soda ash is - Study guides, Class notes & Summaries

Topped out correct answers Installing the last beam on a steel construction project is known as what? Dome correct answers An arch rotated around its vertical centerline is the definition of what? Fly ash correct answers What type of concrete admixture is a recyclable material, produced from coal fired power plants and increases the strength and workability in concrete? 85% correct answers Clear glass transmits what percentage of visible light? Flashing correct answers Special detail...

Certified Pool Operator Exam Prep (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A Q: You can become sick from ingesting water infected with Legionella bacteria Answer: false Q: Channeling of filters occurs when: Answer: the FMR is exceeded, and water cuts a channel through the media Q: The only physical factor that affects water balance is: Answer: temperature Q: To be classified as a disinfectant, a compound must kill or ...

Which disinfectant would work best against cryptosporidium? - ️️Ozone The pH of a water sample is greater that the pHs so the Langlier index? - ️️Indicates the water is scale forming. When water high in calcium bicarbonate is softened by ion exchange - ️️Sodium bicarbonate remains in the product water. Lime softening can effectively disinfect water because: - ️️The pH level is higher than 10.5 A noncarbonate hardness compound is - ️️MgSO4 What term refers to th...

Which disinfectant would work best against cryptosporidium? - Ozone The pH of a water sample is greater that the pHs so the Langlier index? - Indicates the water is scale forming. When water high in calcium bicarbonate is softened by ion exchange - Sodium bicarbonate remains in the product water. Lime softening can effectively disinfect water because: - The pH level is higher than 10.5 A noncarbonate hardness compound is - MgSO4 What term refers to the reintroduction of carbon dioxide int...

The percentage of hypoclorous acid formation is most influenced by: : pH Pool painting is usually done: : Before opening in the spring When a pool is chlorinated with gas chlorine, the operator must also use: : Soda Ash The term "chlorine demand" refers to: : The amount of chlorine which will react with substances in the pool Re-circulation pumps used in swimming pools are the type called: 2 | P a g e : Centrifugal pumps Reversing the flow of water through the filters is called: : ...

Cole's EHS NEHA Exam Study Guide Questions and Answers All Correct Latest Update Bacteria activity in soil ceases when - Answer- Moisture content is less than 14-16% What is onchocerciasis? - Answer- river blindness, caused by a worm and transmitted by black flies What is scabies? - Answer- Infectious disease of the skin caused by burrowing of the female mite into the skin where it deposits its eggs What is leptospirosis? - Answer- Bacterial disease caused by contaminated animal...

Certified Pool Operator Test Review(2023) 12 Reasons why the health inspector will close your pool - CORRECT ANSWER-1. pump filter not working for more than an hour 2. main drain is not visible 3. chemical readings out of range 4. no pool operator (15 minute grace period) 5. no lifeguard or cpr certs present 6. water is below the skimmer line 7. danger to the public 8. chlorinator is not working 9. health inspector is not allowed in 10. bathrooms + drains not working 11. flow rat...

REHS Practice Test Questions and Answers 100% Accurate Soil permeability procedure involves evaluating a soil core or test pit. What does the procedure yield? a. Permeability estimated seepage rate b. Permeability estimated application rate c. Permeability estimated range b. Permeability estimate How does chlorine kill microorganisms and bacteria? a. By weakening enzymes and destroying internal organelles b. By attacking lipids in cell walls and destroying enzymes and structure...

Stationary Engineer Exam Questions And Answers How much clearance from the top of the boiler is needed for a HP boiler that produces 70000 lbs of steam? - ANS 7 feet On a gas fired boiler what is the proper gas to air mixture - ANS 30%-70% and in special arrangements it can be as high as 100% . ANSWER CHAPTER 11 remember% What is the total hardness in a system that was found to have calcium hardness of 60ppm and magnesium hardness of 18ppm and carbon hardness of 12 ppm? - ANS ...

REHS Questions and Answers Rated A What would you expect from a swimming pool with a high pH reading? Cloudiness and eye irritation Which will raise the pH of a pool? a. Calcium Bicarbonate b. Calcium Carbonate c. Soda Ash or Caustic Soda Soda Ash or Caustic Soda Soda ash is Sodium Carbonate NaCO3 Caustic Soda is NaOH Which chemical is used to oxygenate swimming pool water? a. Ozone b. Sodium Carbonate c. Sodium Bicarbonate d. Calcium Carbonate Sodium Carbonate How would a swimmer most...