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Class D Water Operator <: questions and answers verified A+| download to ace tests| fall 2024 $11.49   Add to cart

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Class D Water Operator <: questions and answers verified A+| download to ace tests| fall 2024

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Class D Water Operator &lt: questions and answers verified A+| download to ace tests| fall 2024Class D Water Operator &lt: questions and answers verified A+| download to ace tests| fall 2024Class D Water Operator &lt: questions and answers verified A+| download to ace tests| fall 2024 What are...

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  • September 12, 2024
  • 12
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Class D Water Operator
  • Class D Water Operator
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Class D Water Operator &lt: questions an
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Whatsdaresdsomesdphysicalsdcharacteristicssdofsdwater?sd-sdcorrectsdanswers-
Temperature,sdturbidity,sdcolor,sdtaste,sdodor

Whatsdaresdsomesdchemicalsdcharacteristicssdofsdwater?sd-sdcorrectsdanswers-
Hardness,sdpH,sdsolids,sdandsdgases

Whatsdissdturbidity?sd-sdcorrectsdanswers-
thesdamountsdofsdsuspendedsdmatter,sdsuchsdassdclay,sdsilt,sdorganicsdmatter,sdandsdmicroorganismssdinsdwater

T/FsdWatersdissdneversdfoundsdpuresdinsdnature.sd-sdcorrectsdanswers-True

Issdturbiditysdmoresdofsdasdproblemsdinsdgroundwatersdorsdsurfacesdwater?sd-sdcorrectsdanswers-Surfacesdwater

Asdsystem'ssdfilteredsdwatersdmustsdbesd_______sdNephelometricsdTurbiditysdUnitssd(NTU)sdorsdlesssdinsdatsdleastsd
95%sdofsdthesdmeasurementssdtakensdeachsdmonth,sdandsdnosdsamplesdcansdexceedsd_____sdNTU.sd-
sdcorrectsdanswers-0.3



1

T/FsdTruesdcolorsdissddissolvedsdinsdwatersd(insdsolution)sdandsdcannotsdbesdremovedsdbysdfiltering.sd-
sdcorrectsdanswers-True.sdTeasdinsdwatersdissdansdexamplesdofsdtruesdcolor.



Suspendedsdcolorsdissdcalledsd_______sdcolor.sd-sdcorrectsdanswers-apparent

Colorsdabovesd______sdunitssdissdobjectionablesdinsdasdpublicsdwatersdsupply.sd-sdcorrectsdanswers-15sdunits

Asdscalesdcalledsdthesd________sdmeasuressdodor.sd-sdcorrectsdanswers-ThresholdsdOdorsdNumbersd(TON)

Odorsdgreatersdthansdasdscalesdofsd_______sdissdundesirable.sd-sdcorrectsdanswers-3

Tastesdandsdodorssdinsdwatersdresultsdfromsd_______,sdbacteria,sddecayingsdorganicsdmatter,sdgases,sdandsdchemi
calssdsuchsdassdmanganese,sdzinc,sdcopper,sdiron,sdmagnesium,sdsodium,sdandsdpotassium.sd-sdcorrectsdanswers-
algae

Chemicalsdcharacteristicssdofsdwatersdgenerallysdcannotsdbesddetectedsdbysdsight,sdsmell,sdorsdtastesdandsdmustsd
besddeterminedsdbysd__________.sd-sdcorrectsdanswers-laboratorysdanalysis

Chemicalsdlaboratorysdanalysissdmustsdbesdsampledsd_______sdpersdyearsdforsdsurfacesdwatersdandsdnormallysd_
______sdforsdgroundwater.sd-sdcorrectsdanswers-once/yearsdforsdsurfacesdwater

oncesdeverysdthreesdyearssdforsdgroundwater

Watersdweighssd______sdlbs/gal.sd-sdcorrectsdanswers-8.34sdlbs/gal

, T/F

Forsdwater,sd1sdmg/Lsdissdequalsdtosd1sdpartsdpersdmillionsd(ppm)sdbysdweight.sd-sdcorrectsdanswers-True

Whichsdtwosdmineralssdmainlysdcausesdhardnesssdinsdwater?sd-sdcorrectsdanswers-Calciumsdandsdmagnesium

Issdhardnesssdmoresdofsdasdproblemsdinsdgroundwatersdorsdsurfacesdwater?sd-sdcorrectsdanswers-Groundwater

Watersdissdconsideredsdhardsdwhensditsdexceedssd_______.sd-sdcorrectsdanswers-
100sdmg/Lsdofsdcalciumsdcarbonate

ThesdpHsdscalesdrangessdfromsd_____sdtosd_____.sd-sdcorrectsdanswers-0sdtosd14

OnsdthesdpHsdscale:

0sdtosd<7sdissd______.

7sdissd_______.

>7sdtosd14sdissd______.sd-sdcorrectsdanswers-Acidic

Neutral

Basicsdorsdalkaline

Sulfuric,sdhydrochloric,sdandsdnitricsdacidssdcansdbesdusedsdtosd______sdpH.

Caustic,sdlime,sdorsdsodasdashsdcansdbesdusedsdtosd______sdpH.sd-sdcorrectsdanswers-Lower

Raise

Suspendedsdsolidssdcansdbesdremovedsdbysd________.sd-sdcorrectsdanswers-Filtration

Cansddissolvedsdsolidssdbesdremovedsdbysdfiltration?sd-sdcorrectsdanswers-No

Totalsddissolvedsdsolidssdshouldsdnotsdexceed________.sd-sdcorrectsdanswers-1000sdmg/L

Whatsdaresdthreesdcommonsdgassessdfoundsdinsdwater?sd-sdcorrectsdanswers-
Hydrogensdsulfide,sdcarbonsddioxide,sdandsdmethane

Excesssd________sdcansdcausesdbluesdbabysdsyndrome.sd-sdcorrectsdanswers-NitrogensdorsdNitrates

Whatsdissdthesdmajorsdsourcesdofsdnitrogensdintosddrinkingsdwater?sd-sdcorrectsdanswers-
Fertilizersdandsdanimalsdwastesdcarriedsdbysdrainwatersdrunoff

WhatsdissdthesdEPAsdprimarysdMCLsd(maximumsdcontaminantsdlevel)sdforsdfluoride?sd-sdcorrectsdanswers-
4.0sdmg/L

Atsdwhatsdlevelsdwillsdfluoridesdcausesdmottlingsdofsdteeth,sdasdconditionsdknownsdassdfluorosis?sd-
sdcorrectsdanswers-4.0sdmg/L



WhatsdissdthesdstatesdofsdTexassdsecondarysdstandardsdforsdfluoride?sd-sdcorrectsdanswers-2.0sdmg/L

Trihalomethanessd(THM)sdandsdHaloaceticsdAcidssd(HAA)sdaresdbyproductssdofsddrinkingsdwatersd________.sd-
sdcorrectsdanswers-chlorination

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