Caustic soda is - Study guides, Class notes & Summaries

REHS Exam Questions with 100% Correct Answers. What would you expect from a swimming pool with a high pH reading? - CORRECT ANSWER Cloudiness and eye irritation Which will raise the pH of a pool? a. Calcium Bicarbonate b. Calcium Carbonate c. Soda Ash or Caustic Soda - CORRECT ANSWER Soda Ash or Caustic Soda Soda ash is - CORRECT ANSWER Sodium Carbonate NaCO3 Caustic Soda is - CORRECT ANSWER NaOH Which chemical is used to oxygenate swimming pool water? a. Ozone b. Sodi...

R V AHLUWALIA (1993) 96 CR APP R 13Facts: This case is decided under the old law of provocation. The appellant poured petrol and caustic soda on to her sleeping husband and then set fire to him. He died six days later from his injuries. The couple had an arranged marriage and the husband had been violent and abusive throughout the marriage. He was also having an affair. On the night of the killing he had threatened to hit her with an iron and told her that he would beat her the next da...

A watercourse that flows continuously at all times of the year is known as what? - Perennial stream What is defined as 'the killing or inactivation of pathogenic organisms in water'? - Disinfection Free chlorine residual values are based on a contact time of how long? - 10 mins What time of day does algae cause the pH of the water decrease? - Night time What contributes to the creation of algae blooms? - Increased nutrients What is found mainly in groundwater sources and forms a precipit...

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

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 - CORRECT ANSWER 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 - CORRECT ANSWER d Boiler surfaces may h...

Ohio Stationary Steam Engineer Exam - Questions with Verified Answers A boiler has carried a large slug of water over into steam. This condition is called: Priming How do steam separators work? they cause a sudden change in direction that throws water out On a pressure gauge what is the minimum size piping that can be used? 1/4" if copper 1/2" if steel When may copper tubing not be used? over 406 degrees What common type of expansion joint is used universally throughout a steam distribution ...

A student prepares a solution of calcium nitrate by reacting dilute nitric acid, HNO3, with the base calcium hydroxide, Ca(OH)2. (i) Why is calcium nitrate an example of a salt? - Ans .The H+ ion in a nitric acid has been replaced by a metal ion OR by a Ca2+ ion MCl2.2H2O is a salt with water of crystallisation, and M is a metal. the water of crystallisation makes up 22.2% by mass of the hydrated salt. What is the relative formula mass of the anhydrous salt? - Ans .126 Strontium react...

Class D Water Operator Questions and Answers Already Passed What are some physical characteristics of water? Temperature, turbidity, color, taste, odor What are some chemical characteristics of water? Hardness, pH, solids, and gases What is turbidity? the amount of suspended matter, such as clay, silt, organic matter, and microorganisms in water T/F Water is never found pure in nature. True Is turbidity more of a problem in groundwater or surface water? Surface water A system's filtered wa...

What is the purpose of adding Carbon Dioxide to Softened water? - ANSWER-Restores the Carbonate Balance. How is lime sludge dewatered? - ANSWER-By Solar Lagoons How can Non-Carbonate Hardness be achieved? - ANSWER-By Sodium Carbonate, Ion Exchange, Membrane Separation, Sodium Hydroxide. What is Selective Carbonate Removal? - ANSWER-Removal of Calcium Bicarbonate Hardness at PH of 9.6. Noncarbonate hardness present in water means? - ANSWER-The Total Hardness is greater than the Total ...

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