Hardness Study guides, Revision notes & Summaries

Boiler water is treated in order to prevent a) sludge, mud, pitting, corrosion b) foaming, corrosion, carryover, sludge c) sludge, corrosion, scale, carryover d) scale, sludge, mud, pitting e) foaming, carryover, pitting, corrosion c Dissolved solids in raw water a) cause pitting of boiler surfaces b) cause grooving of piping surfaces c) are organic matter d) cannot be removed with filters e) cause corrosion of boiler surfaces d Boiler surfaces may have what appears to ...

Ammonia mixed with chlorine gas creates a - ANSWER-white smoke The most difficult part of a water distribution operator's job. - ANSWER-furnish a continuous supply Physical connection between a safe and potentially unsafe water source. - ANSWER-cross connection A distribution system is a - ANSWER-looped system Dead end mains should be flushed - ANSWER-every month Excess nitrate causes a condition called - ANSWER-blue baby syndrome Water hardness is caused by - ANSWER-calcium a...

Tooling U Hardness Testing 221 Questions with Correct Answers Which of the following is the proper notation for a material with Rockwell B-scale hardness of 99? - Answer-HRB99 Which of the following statements about Shore hardness testing is true? Shore hardness testing uses: - Answer-A durometer with an indenter and dial indicator to measure a material's hardness. What is the correct notation for a Knoop hardness of 600 under a 0.75 kg testing force? - Answer-600HK0.75 Which of th...

TCEQ Surface Water B License Pt. 3 Question and answers 2024 verified to passWhat causes carbonate hardness? - correct answer Magnesium Bicarbonate What are the detention times for setting basins? - correct answer 6 hours for normal, 4.5 for Softening What type of reaction is coagulation? - correct answer Chemical and physical What does the reaction of Alum or iron compounds with natural alkalinity in water form? - correct answer Insoluble Hydroxide (Floc) What is the maximum num...

CPO Test with elaborated answers 2023 11 reasons why the health dept will close your pool - CORRECT ANSWER-1. danger to the public 2. no lifeguard on the deck 3. main drain not visible 4. free chlorine, bromine, pH or cyanuric acid are other than specified 5. recirculating equipment not working for more than 1 hour 6. chemical disinfectant feeder has not been functional for over 24 hours 7. bathhouse drainage system is blocked to render the bathhouse unusable 8. inspector denied ent...

EDTA/Water Hardness Exam Questions & Answers 2024/2025

ACA Photoshop CC Review Exam Questions with Correct Answers The design principle that divides and image into nine equal parts-3 rows, 3 columns-and places the area of emphasis at one of the intersections? - Answer-Rule of Thirds 2. Why would you create snapshots in the History panel? - Answer-Snapshots let you apply different filters and effects to the same document and compare the results. 7. You are using a small image to create a custom brush. You want the brush to have crisp edges. H...

180 - Answer- In a heat-sanitizing dishwashing machine, what is the minimum temperature for the final rinse? Jaundice, vomiting and/or diarrhea - Answer- A food handler must be excluded from the food establishment for which symptoms? 41 to 135 - Answer- What is the temperature range for the danger zone? spore - Answer- What is the form some bacteria take to keep from dying when they do not have enough food? state - Answer- Most regulations for food service operations are at what leve...

Which of the following is the proper notation for a material with Rockwell B-scale hardness of 99? - ANSWER-HRB99 Which of the following statements about Shore hardness testing is true? Shore hardness testing uses: - ANSWER-A durometer with an indenter and dial indicator to measure a material's hardness. What is the correct notation for a Knoop hardness of 600 under a 0.75 kg testing force? - ANSWER-600HK0.75 Which of the following terms describes a material's ability to resist penetr...

Certified Pool Operator Exam Review (New 2024/ 2025 Update) Questions and Verified Answers| 100% Correct | A Grade QUESTION whole range for calcium hardness in a pool: ____ to ____ Answer: 150, 1000 QUESTION ideal range of calcium hardness in a pool: ____ to ____ Answer: 200, 400 QUESTION whole range of calcium hardness in a spa: ____ to ____ Answer: 100, 800 QUESTION ideal range of calcium hardness in a spa: