CPO Exam Guide QUESTIONS & ANSWERS 2024 ( A+
GRADED 100% VERIFIED)
reducing ahazards a- aCorrect a aAnswer a- aprevention ais athe abest aoption
water acontamination a- aCorrect a aAnswer a- a1. afecal arelated a(crypto, agiardia, ashigella, ae acoli,
aadenovirus, ahepatitis aA) a
2. anon-fecal a(pseudomonas aaeruginosa, aswimmer's aear, alegionella apneumophila, amolluspioxvirus,
aplanter's awarts, aathlete's afoot)
CDC a- aCorrect a aAnswer a- aCenter afor aDisease aControl aPrevention
solid afecal aincident a- aCorrect a aAnswer a- aremove apeople, apH abetween a7.2-7.5, araise achlorine a2.0
appm, a30 aminute abreak
diarrhea a- aCorrect a aAnswer a- aremove apeople, apH a7.2-7.5, araise achlorine ato a20.0 appm a(12.75
ahrs), aafter abackwash afilters, araise achlorine ato anormal, athen are-open apool
handling acontaminated amaterial a- aCorrect a aAnswer a- awear agloves, aremove aexcess, adisinfect aall
asurfaces, afollow aguidelines aof adisposal a& awash ahands
prevention apractices a- aCorrect a aAnswer a- a1. amaintain aproper adisinfectant alevels aat aall atimes
2. ahave akids ause abathroom abefore
3. aswimmer's ashower abefore aswimming
4. aprohibit aswimming awith awounds/sores
5. awork awith alocal ahealth adepartment
disinfection a- aCorrect a aAnswer a- aaka asanitation=destroying amicroorganisms; aconsider achemical
asafety a& astorage aspace awhen aconsidering aa adisinfectant
oxidation a- aCorrect a aAnswer a- aprocess aof achanging aa achemical astructure aof acontaminants ato
aremove afrom awater a(turn ainto asimple agases); aaffected aby: apH, atemperature, aenvironmental
awastes a& abather acontamination
, what ais athe amost acommon adisinfectant aused a- aCorrect a aAnswer a- achlorine
chlorine acompounds a- aCorrect a aAnswer a- a1. aorganic a(trichlor aand adichlor); acontain acyanuric aacid;
astabilized a
2. ainorganic a(calcium ahypochlorite, asodium ahypochlorite, alithium ahypochlorite, achlorine agas); ano
acyanuric aacid; aunstabalized, abut acan abe astabilized awith aacid; asensitive ato alight
cyanuric aacid a- aCorrect a aAnswer a- a30-50 appm; adecreases abreakdown aof achlorine abecause aUV
aradiation a(10x aas astrong)
chemistry aof achlorine a- aCorrect a aAnswer a- awhen aa achlorine acompound ais aintroduced ato awater
athis aleads ato aa achemical areaction awhich acreates aeither ahypochlorous aacid a(kills amicroorganisms)
aor ahypochlorite aion a(inactive aform aof achlorine)
types aof achlorine a- aCorrect a aAnswer a- afree a(available afor adisinfection), acombined, aor atotal
DPD atests a- aCorrect a aAnswer a- ameasure aof afree achlorine; akits aor astrip atests; asee adifferent
ashades aof areds
acceptable arange aof afree achlorine a- aCorrect a aAnswer a- a1.0-5.0ppm
combined achlorine a(chloramines) a- aCorrect a aAnswer a- afree achlorine aplus aammonia aor anitrogen
acontaining aorganic acompounds a(chemical abond); ano alonger aan aeffective adisinfectant a(may acause
aodor, aetc.); aideal aamount ashould abe a0 a(allowed aamount= a0.2 appm ain apools aor a0.5 appm ain
aspas)
bromine a- aCorrect a aAnswer a- adisinfectant ain apools/spas-good aalgicidal aproperties--not aas agood
aoxidizer--tablets aor asodium abromine
ozone a- aCorrect a aAnswer a- adisinfectant ain apools/spas; amust abe aused awith achlorine aor abromine;
acan't abe atransported; aleaves ano aresidue ain awater; aproduced aby aultra aviolet alight aor acorona
adischarge
water abalance a- aCorrect a aAnswer a- acorrect aratio aof amineral acontent aand apH ato aprevent apool
awater afrom abeing acorrosive/scaly; aprotects apool afrom achemical aerosion
factors athat acontribute ato awater abalance a- aCorrect a aAnswer a- apH, aalkalinity, acalcium ahardness,
atemperature, atotal adissolved asolids
pH a- aCorrect a aAnswer a- aproteins ahydrogen; amost aimpact aon abalanced awater; ameasured aby aacid
avs. abase: a0-14 a(0=acidic, a14=base, a7=neutral); a6 ahas a10x athe apH aof a7, a7 ahas a10x athe apH aof a8,
aetc.
pool apH a- aCorrect a aAnswer a- ashould abe aslightly aabove aneutral; amost acompatible arange=7.2 aand
a7.8; aideal=7.4 aand a7.6; alower athe apH, athe amore aeffective
GRADED 100% VERIFIED)
reducing ahazards a- aCorrect a aAnswer a- aprevention ais athe abest aoption
water acontamination a- aCorrect a aAnswer a- a1. afecal arelated a(crypto, agiardia, ashigella, ae acoli,
aadenovirus, ahepatitis aA) a
2. anon-fecal a(pseudomonas aaeruginosa, aswimmer's aear, alegionella apneumophila, amolluspioxvirus,
aplanter's awarts, aathlete's afoot)
CDC a- aCorrect a aAnswer a- aCenter afor aDisease aControl aPrevention
solid afecal aincident a- aCorrect a aAnswer a- aremove apeople, apH abetween a7.2-7.5, araise achlorine a2.0
appm, a30 aminute abreak
diarrhea a- aCorrect a aAnswer a- aremove apeople, apH a7.2-7.5, araise achlorine ato a20.0 appm a(12.75
ahrs), aafter abackwash afilters, araise achlorine ato anormal, athen are-open apool
handling acontaminated amaterial a- aCorrect a aAnswer a- awear agloves, aremove aexcess, adisinfect aall
asurfaces, afollow aguidelines aof adisposal a& awash ahands
prevention apractices a- aCorrect a aAnswer a- a1. amaintain aproper adisinfectant alevels aat aall atimes
2. ahave akids ause abathroom abefore
3. aswimmer's ashower abefore aswimming
4. aprohibit aswimming awith awounds/sores
5. awork awith alocal ahealth adepartment
disinfection a- aCorrect a aAnswer a- aaka asanitation=destroying amicroorganisms; aconsider achemical
asafety a& astorage aspace awhen aconsidering aa adisinfectant
oxidation a- aCorrect a aAnswer a- aprocess aof achanging aa achemical astructure aof acontaminants ato
aremove afrom awater a(turn ainto asimple agases); aaffected aby: apH, atemperature, aenvironmental
awastes a& abather acontamination
, what ais athe amost acommon adisinfectant aused a- aCorrect a aAnswer a- achlorine
chlorine acompounds a- aCorrect a aAnswer a- a1. aorganic a(trichlor aand adichlor); acontain acyanuric aacid;
astabilized a
2. ainorganic a(calcium ahypochlorite, asodium ahypochlorite, alithium ahypochlorite, achlorine agas); ano
acyanuric aacid; aunstabalized, abut acan abe astabilized awith aacid; asensitive ato alight
cyanuric aacid a- aCorrect a aAnswer a- a30-50 appm; adecreases abreakdown aof achlorine abecause aUV
aradiation a(10x aas astrong)
chemistry aof achlorine a- aCorrect a aAnswer a- awhen aa achlorine acompound ais aintroduced ato awater
athis aleads ato aa achemical areaction awhich acreates aeither ahypochlorous aacid a(kills amicroorganisms)
aor ahypochlorite aion a(inactive aform aof achlorine)
types aof achlorine a- aCorrect a aAnswer a- afree a(available afor adisinfection), acombined, aor atotal
DPD atests a- aCorrect a aAnswer a- ameasure aof afree achlorine; akits aor astrip atests; asee adifferent
ashades aof areds
acceptable arange aof afree achlorine a- aCorrect a aAnswer a- a1.0-5.0ppm
combined achlorine a(chloramines) a- aCorrect a aAnswer a- afree achlorine aplus aammonia aor anitrogen
acontaining aorganic acompounds a(chemical abond); ano alonger aan aeffective adisinfectant a(may acause
aodor, aetc.); aideal aamount ashould abe a0 a(allowed aamount= a0.2 appm ain apools aor a0.5 appm ain
aspas)
bromine a- aCorrect a aAnswer a- adisinfectant ain apools/spas-good aalgicidal aproperties--not aas agood
aoxidizer--tablets aor asodium abromine
ozone a- aCorrect a aAnswer a- adisinfectant ain apools/spas; amust abe aused awith achlorine aor abromine;
acan't abe atransported; aleaves ano aresidue ain awater; aproduced aby aultra aviolet alight aor acorona
adischarge
water abalance a- aCorrect a aAnswer a- acorrect aratio aof amineral acontent aand apH ato aprevent apool
awater afrom abeing acorrosive/scaly; aprotects apool afrom achemical aerosion
factors athat acontribute ato awater abalance a- aCorrect a aAnswer a- apH, aalkalinity, acalcium ahardness,
atemperature, atotal adissolved asolids
pH a- aCorrect a aAnswer a- aproteins ahydrogen; amost aimpact aon abalanced awater; ameasured aby aacid
avs. abase: a0-14 a(0=acidic, a14=base, a7=neutral); a6 ahas a10x athe apH aof a7, a7 ahas a10x athe apH aof a8,
aetc.
pool apH a- aCorrect a aAnswer a- ashould abe aslightly aabove aneutral; amost acompatible arange=7.2 aand
a7.8; aideal=7.4 aand a7.6; alower athe apH, athe amore aeffective
