WASTEWATER COLLECTIONS QUESTIONS
WITH CORRECT ANSWERS 2025
WhatWisWaWunusuallyWstrongWwastewaterWdischargedWfromWaWwasteWsource?W-
WCORRECTWANSWERW-AWsockWload
TheWfourWcategoriesWofWwastewaterWcharacteristicsWare?W-WCORRECTWANSWERW-
physical,Wchemical,Wbacteriological,
andWradiological.
TheWamountWofWwastewaterWcollectedWdependsWon?W-WCORRECTWANSWERW-
economicWstatus,WwaterWrates,Wclimate,
infiltration/inflow,WandWindustry.
PhysicalWcharacteristicsWareWdetectedWbyWtheWsensesWsuchWas?W-WCORRECTWANSWERW-
smellWandWsight
WhenWanaerobicWdecompositionWbeginsWproducingWacidWand
odorousWgases.?W-WCORRECTWANSWERW-BeginsWwhenWdissolvedWoxygenWisWgone
OneWmg/LWorWoneWppmWis?W-WCORRECTWANSWERW-
oneWpoundWofWmaterialWinWaWmillionWpoundsWofWwater.
OrganicsWareWproducedWbyW-WCORRECTWANSWERW-plants,Wanimals,WorWhumans
ItWisWnotWorganicWandWexamplesWareWsand,Wmetal,WandWrock.W-WCORRECTWANSWERW-"Inorganic"
WhatWisWtoxic,Wcorrosive,Wflammable,WheavierWthanWair,WdeadensWtheWsenseWof
, smell,WandWhasWaWrottenWeggWodor.W-WCORRECTWANSWERW-HydrogenWsulfide
WhatWisWlighterWthanWair,Wexplosive,Wcolorless,WandWodorless?W-WCORRECTWANSWERW-
MethaneW(natural)Wgas
WhatWOilWandWgreaseWinWwastewaterWmayWcause?W-WCORRECTWANSWERW-
explosion,Wfires,stoppagesWandWodor
ExcessiveWchloridesWinterfereWwithWtreatmentWandWeffectWwastewaterW____W-
WCORRECTWANSWERW-labWtests
TheWBODWtestWindicatesWtheWamountWofWorganicWmatterWthatWcanWbeWoxidizedWbyWbiologicalWand
chemicalWactionWinWhowWmanyWdaysWatWwhatWtemperatureW?W-WCORRECTWANSWERW-
5WdaysWatW20°C
BacteriaWrequiringWfree,WuncombinedWoxygenWareW________.W-WCORRECTWANSWERW-aerobic
BacteriaWrequiringWcombinedWoxygenWareW________.W-WCORRECTWANSWERW-anaerobic
BacteriaWableWtoWmetabolizeWfreeWorWcombinedWoxygenWareW________.W-WCORRECTWANSWERW-
facultative
Disease-causingWmicroorganismsWareWcalledW________.W-WCORRECTWANSWERW-pathogens
WaterborneWdiseasesWincludeWtyphoid,Wdysentery,Wcholera,WandW________.W-
WCORRECTWANSWERW-polio
WITH CORRECT ANSWERS 2025
WhatWisWaWunusuallyWstrongWwastewaterWdischargedWfromWaWwasteWsource?W-
WCORRECTWANSWERW-AWsockWload
TheWfourWcategoriesWofWwastewaterWcharacteristicsWare?W-WCORRECTWANSWERW-
physical,Wchemical,Wbacteriological,
andWradiological.
TheWamountWofWwastewaterWcollectedWdependsWon?W-WCORRECTWANSWERW-
economicWstatus,WwaterWrates,Wclimate,
infiltration/inflow,WandWindustry.
PhysicalWcharacteristicsWareWdetectedWbyWtheWsensesWsuchWas?W-WCORRECTWANSWERW-
smellWandWsight
WhenWanaerobicWdecompositionWbeginsWproducingWacidWand
odorousWgases.?W-WCORRECTWANSWERW-BeginsWwhenWdissolvedWoxygenWisWgone
OneWmg/LWorWoneWppmWis?W-WCORRECTWANSWERW-
oneWpoundWofWmaterialWinWaWmillionWpoundsWofWwater.
OrganicsWareWproducedWbyW-WCORRECTWANSWERW-plants,Wanimals,WorWhumans
ItWisWnotWorganicWandWexamplesWareWsand,Wmetal,WandWrock.W-WCORRECTWANSWERW-"Inorganic"
WhatWisWtoxic,Wcorrosive,Wflammable,WheavierWthanWair,WdeadensWtheWsenseWof
, smell,WandWhasWaWrottenWeggWodor.W-WCORRECTWANSWERW-HydrogenWsulfide
WhatWisWlighterWthanWair,Wexplosive,Wcolorless,WandWodorless?W-WCORRECTWANSWERW-
MethaneW(natural)Wgas
WhatWOilWandWgreaseWinWwastewaterWmayWcause?W-WCORRECTWANSWERW-
explosion,Wfires,stoppagesWandWodor
ExcessiveWchloridesWinterfereWwithWtreatmentWandWeffectWwastewaterW____W-
WCORRECTWANSWERW-labWtests
TheWBODWtestWindicatesWtheWamountWofWorganicWmatterWthatWcanWbeWoxidizedWbyWbiologicalWand
chemicalWactionWinWhowWmanyWdaysWatWwhatWtemperatureW?W-WCORRECTWANSWERW-
5WdaysWatW20°C
BacteriaWrequiringWfree,WuncombinedWoxygenWareW________.W-WCORRECTWANSWERW-aerobic
BacteriaWrequiringWcombinedWoxygenWareW________.W-WCORRECTWANSWERW-anaerobic
BacteriaWableWtoWmetabolizeWfreeWorWcombinedWoxygenWareW________.W-WCORRECTWANSWERW-
facultative
Disease-causingWmicroorganismsWareWcalledW________.W-WCORRECTWANSWERW-pathogens
WaterborneWdiseasesWincludeWtyphoid,Wdysentery,Wcholera,WandW________.W-
WCORRECTWANSWERW-polio
