CWS 112 Grossmont College Surface Water Treatment Rule Practice

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cws 112

Grossmont College

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i need help with questions about water study i will attach it here

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cccd instructure.com/courses/36263/ques/1992 1B/take YouTube Transit Sacraments and se Colorado River B 02- The Water Cycl. Question 37 > tbm978-3-319-05 D 1 pts Which of the following is NOT a disinfectant? O Feci UV light OO CIO D Question 38 1 pts Which of the following is the most effective disinfectant at killing pathogens? Ozone Chlorine Chloramines Chlorine dioxide dan 29 70'S acture.com/courses/36263/quizzes/199218/take le Translate Colorado River B 02 - The Water Cycl... Sacramento and sa > bbm978-3-319-05 D Question 35 1 pts Granular Activated Carbon (GAC) is better than anthracite filter media in removing taste and odors hardness O microorganisms disinfection residual D Question 36 1 pts Lime slaking creates tremendous hardness fumes heat DBPS 70°F Suni a o X + ture.com/courses/36263/quizzes/199218/take Translate Colorado RIA 02 - The Water Cycl Sacramento and sa > bbm.978-3-319-05... D Question 39 1 pts Which of the following are examples of acids? HCI, HSO4, NaOH OH3PO4, NH,OH, HCI HCI, Ca(OH)2, HOCI HOCI, HCI, H2SO4 D Question 40 1 pts The addition of this compound will raise the pH of the water being treated NaOH Al2(SO4)3 14H20 CuSO H2SO4 2 70°F Sun x instructure.com/courses/36263/quizzes/199215/take YouTube Tractat Colorado A P02 The Water Cycl Sacramento and 3bb978-3-319-05 Which chemical is used to control taste & odor? Chlorine Sodium Hydroxide Ferric Chloride Lime D Question 44 1 pts Tracer studies are used to determine which of the following? viruses basin depth short circuiting chlorine demand 1 pts Question 45 701 LA te.com/courses/36263/quizzes/199218/take Translate Colorado River 02 - The Water Cycl Sacramento and a > bbm/978-3-319-05... Question 41 1 pts Although any divalent metal ion can contribute to hardness, hardness is typically defined as the sum of the_and_ions. O magnesium and sodium calcium and sulfate o calcium and magnesium iron and magnesium 1 pts Question 42 The EDTA titration test is the test most often used at water treatment laboratories to measure dissolved oxygen Орн water temperature total hardness (2 70 F Sunny ** o 7 + astructure.com/courses/36263/quizzes/199218/take Tube Translate Colorado River B 02 - The Water Cycl Sacramento and bbm 978-3-319-05 D Question 31 1 pts Bromate --- O is a disinfection by-product is regulated by Stage 1 DBPR must be monitored by plants using ozone all of the above Question 32 1 pts What is the density, in lbs/gal, of a chemical with a specific gravity of 1.3? 6.41 lbs/gal 0 10.84 lbs/gal 8.34 lbs/gal 0 55 lbs/gal WFS instructure.com/courses/36263/quizzes/199218/take ouTube Translate Colorado River B 02 - The Water Cycl Sacramento and Sa... bbm.978-3-319.05. Question 25 1 pts Methemoglobinemia (blue baby syndrome) is a blood disorder caused by the presence of excessive in water. O lead and copper sodium fluorosilicate chlorides O nitrates 1 pts Question 26 Powder Activated Carbon (PAC) is commonly used to remove excessive hardness in water remove taste and odors in water remove iron and manganese in water raise the pH of water x - astructure.com/courses/36263/quizzes/199218/take uTube Translate Colorado River 02 - The Water Cycl. Sacramento and > bbm978-3-319-05. Question 27 1 pts Which of the following membrane technologies would be effective in removing Giardia? microfiltration O nanofiltration O reverse osmosis O all of the above U Question 28 1 pts A chlorine solution of 100,000 mg/L is a __..% solution 100 10 0 1 0.1 70°F dinstructure.com/courses/36263/quizzes/19921B/take YouTube Translate Colorado River 02 - The Water Cycl Sacramento and Sa > bbm 978-3-319-05 Question 29 1 pts Which of the following best describes the chemical softening process? The addition of O ozone to destroy hardness coagulants like alum to precipitate minerals O chemicals to convert calcium and magnesium into insoluble compounds lime or caustic soda to create non-corrosive water D Question 30 1 pts CT is a product of disinfectant residual concentration and contact time O temperature turbidity TDS VA IL instructure.com/courses/36263/quizzes/199218/take ouTube Translate Colorado River B 02 - The Water Cycl Sacramento and Sa. 3 bbm.978-3-319-05 Question 33 1 pts The Stage 1 D/DBP Rule has a Maximum Residual Disinfectant Level (MRDL) for chlorine at 4.0 ppm 2.0 ppm O 0.2 ppm O 5.0 ppm 1 pts u Question 34 Hardness in water is expressed as a concentration of __in mg/L OKMnO4 CO2 NHS Caco 11 X - structure.com/courses/36263/quizzes/199218/take Tube Translate Colorado River B 02 - The Water Cycl Sacramento and > bbm 978-3-319-05 Question 23 1 pts When using membranes, "SD" stands for O Significant Deposit Increase O Size Density Index O Silt Density Index Surface Deposition Index Question 24 1 pts Langelier's index is used to determine O hardness alkalinity Орн none of the above X ture.com/courses/36263/quizzes/199218/take Translate Sacramento and Sa... 3 bbm978-3-319-05.. Colorado River B 02 - The Water Cycl Question 21 1 pts The most common method of treatment for high nitrate in water is__ Green Sand filtration Reverse osmosis Blending Coagulation and flocculation 1 pts O Question 22 In a turbidity measurement, the abbreviation "NTU" stands for Nitrification Treatment Unit Nephelometric Turbidity Unit Norton Turbidity Unit Nephelometric Treatment Usage Linstructure.com/courses/36263/quizzes/199218/take fouTube Translate Colorado River B 02 - The Water Cycl. Sacramento and Sa... 3 bbm.978-3-319-05... D Question 17 1 pts One microorganism found in water that is resistant to chlorine is ___ O fecal organisms O sulfuric acid virus O cryptosporidium D Question 18 1 pts Analytical results for a calendar month shall be reported to State of California no later than the 5th day of the following month 10th day of the following month 15th day of the following month 1st Tuesday of the month goccd instructure.com/courses/36263/quizzes/199218/take YouTube Translate Colorado River B 02 - The Water Cycl. Sacramento and S. bbm978-3-319-05. D Question 19 1 pts What metals may leach from household plumbing and cause a health hazard? O iron and zinc iron and copper Iron and lead copper and lead Question 20 1 pts The Interim Enhanced Surface Water Treatment Rule and Long Term 1 Surface Water Treatment Rule added requirements for ---- reduction of legionella 2 log removal of cryptosporidium disinfection byproducts 1 log removal of cryptosporidium A good instructure.com/courses/36263/quizzes/199215/ke YouTube Translate 6 Colorado Rivera 02 - The Water Cycl Gmail Sacramento and > bbm978-3-319-05 An amperometric titrator is used to measure __ O conductivity BOD chlorine residual alkalinity Question 4 1 pts Which of the following statements regarding ozone is NOT true? o it is usually generated on site O it is a bluish toxic gas It is a powerful oxidizing agent it leaves a lasting residual 1 pts Question 5 3 9 c? search O RI VE 71 ccd. instructure.com/courses/36263/quizzes/199218/take YouTube Translate Colorado River 02 - The Water Cycl Sacramento and Sa... bbm 978-3-319-05... Question 11 1 pts Which is the correct order (on the average) from smallest to largest for the microorganisms below? O Giardia cysts, bacteria, viruses Viruses, bacteria. Giardia cysts O Bacteria, Giardia cysts, viruses Giardia cysts, viruses, bacteria Question 12 1 pts Which of the following statements regarding hardness is most accurate? it is found only in ground water it can be treated with lime and soda ash it is highly corrosive it presents an acute health risk o $$$ g structure.com/courses/36263/quizzes/199218/take Tube Translate Colorado River B 02 - The Water Cycl. Sacramento and sa 3 tbm978-3-319-05 Which of the following treatment technique is the most effective at controlling cryptosporidium? Filtration process Disinfection using chloramines Sedimentation process O Disinfection using free chlorine Question 8 1 pts Which of the following membranes are effective at removing crypto at a 2 log rate? O Microfiltration Ultrafiltration Nanofiltration All of the above 1 pts
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Explanation & Answer

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1. Bicarbonate, Carbonate, and hydroxide (A)
2. 10. (B)
3. Conductivity (A)
4. It leaves a lasting residual (D)
5. Reverse Osmosis (A)
6. 200 to 500micro strainers (C)
7. Filtration process (A)
8. All of the above (D)
9. 0.3ntu (B)
10. 9 (B)
11. Viruses, bacteria, giardia cysts
12. It can be treated with lime and soda ash (B)
13. Surface Water Treatment Rule (A)
14. Collect repeat samples … (A)
15. Increasing the PH (A)
16. Indicators (B)
17. Cryptosporidium (D)
18. 10th day of the following month (B)
19. Copper and...


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