NACHI RADON ACTUAL EXAM ALL QUESTIONS AND WELL ELABORATED ANSWERS TOP RATED VERSION FOR ALREADY A+ GRADED HIGHLY RECOMMENDED |NEW AND REVISED

NACHI RADON ACTUAL EXAM ALL
QUESTIONS AND WELL
ELABORATED ANSWERS TOP RATED
VERSION FOR ALREADY A+ GRADED
HIGHLY RECOMMENDED |NEW AND
REVISED
Radonmismamradioactivemgasmthatmemanatesmfrom...m-mCORRECTmANSWERmRocksmandmsoils



Radonmtendsmtomconcentratemin...m-
mCORRECTmANSWERmEnclosedmspacesmsuchmasmundergroundmminesmormhouses




Whatmismrecognizedmasmthemmostmimportantmsourcemofmresidentialmradon?m-
mCORRECTmANSWERmSoilmgasminfiltration




Radonminmbuildingmmaterialsmandm

watermextractedmfrommwellsmaremlessmimportantmfactorsminmmostmcircumstancesm-
mCORRECTmANSWERmTrue




Radonmismammajormcontributormtomthemionizingmradiationmdosemreceivedmbymthemgeneralmpopulati
onm-mCORRECTmANSWERmTrue



Studiesmonmindoormradonmandmpancreaticmcancermprovidemstrongmevidencemofmamsubstantialmnum
bermofmcasesminmgeneralmpopulationmTmormF?m-
mCORRECTmANSWERmFalse.mRadonmcanmcausemlungmcancer




Radonmismthemsecondmleadingmcausemofmlungmcancermafter...m-mCORRECTmANSWERmSmoking

,Mostmradonminducedmlungmcancermcasesmoccurmamongmsmokersmduemtomamstrongmcombinedmeffec
t.mTruemormfalse?m-mCORRECTmANSWERmTrue



Whatmismthemprimarymradonmpreventionmandmmitigationmstrategy?m-
mCORRECTmANSWERmSealingmradonmentrymroutesmandmreversingmthemairmpressuremdifferencesmbet


weenmthemindoormoccupiedmspacemandmthemoutdoormsoilmthroughmdifferentmsoilmdepressurization
mtechniques.




Radonmgasmismammanufacturedmgas.mTruemormfalse?m-
mCORRECTmANSWERmFalse.mRadonmgasmismofmnaturalmorigin.




Radonmismamnoblemgasmformedmfromm-mCORRECTmANSWERmRadium



Radiummismamdecaymproductmofm-mCORRECTmANSWERmUranium



Uraniummandmradiummoccurmnaturallyminm-mCORRECTmANSWERmSoil'smandmrocks



Inmadditionmtomradonmgas,madditionalmdecaymproductsmofmuraniummincludemthemisotopesm-
mCORRECTmANSWERmTheronmandmactinon




Onmamscalemofmdays,mradonmgasmhasmamhalf-lifemofm-mCORRECTmANSWERmHalfmlifemofm3.8mdays



Whenmradonmgasmisminmhailed,mDNAmchangemcanmoccur.mTruemormfalsem-mCORRECTmANSWERmTrue



ItmtakesmdecadesmofmradonmexposuremtomcausemDNAmdamage,mtherebymleadingmtomamhighermriskmo
fmlungmcancer.mTruemormfalsem-
mCORRECTmANSWERmFalse.mSincemamsinglemalphamparticlemcanmcausemmajormgeneticmdamagemtoma


mcell,mitmismpossiblemthatmradonmrelatedmDNAmdamagemcanmoccurmatmanymlevelmofmexposure.

,Initially,minvestigationsmofmradonmexposuremfocusedmonmthismprofession.m-
mCORRECTmANSWERmUndergroundmminers




Severalmsurveysmofmradonmconcentrationsminmhomesmbeganminmthismdecade.m-
mCORRECTmANSWERm1980




Inmthismdecade,mhighmconcentrationsmofmradonmweremobservedminmdomesticmandmdrinkingmwatermf
rommdrilledmwellsm-mCORRECTmANSWERm1950's



Themprimarymconcernmaboutmradonminmwatermismfrommingestingmthemwater.mTruemormfalsem-
mCORRECTmANSWERmFalse.mItmhasmbeenmdeterminedmthatmthemprimarymhealthmriskmofmradonminmw


atermismfrommtheminhalationmofmradonmreleasedmindoors.



Emanationmofmradonmfrommbuildingmmaterialsmwasmfoundmtombemamproblemminmsomemareasmduemt
omthemusemofmAlummshalemwithinmenhancedmlevelsmofmradiumminmthismdecadem-
mCORRECTmANSWERmMidm1970's




Soilmgasminfiltrationmbecamemrecognizedmasmthemmostmimportantmsourcemofmindoormreadmonmbymt
hismyearm-mCORRECTmANSWERm1978



ACmequalsm-mCORRECTmANSWERmActivatedmcharcoalmadsorption



Radonmhasmlittlempracticalmuse.mSomemmedicalmtreatmentsmhavememployedmreadmonminmsmallmseal
edmglassmtubesmcalledmseedsmthatmaremspecificallymmanufacturedmtomcontainmthemexactmamountmo
fmradioactivitymneededmformthemapplication.mTruemormfalsem-mCORRECTmANSWERmTrue



Bqm=m-mCORRECTmANSWERmBecquerel

, RadonmspasmaremusedmextensivelyminmRussiamandmcentralmEuropemtomtreatmamnumbermofmcondition
s.mTruemormfalsem-mCORRECTmANSWERmTrue



CWm=m-mCORRECTmANSWERmContinuousmworkingmlevelmmonitoring



EMLmequalsm-
mCORRECTmANSWERmUSmdepartmentmofmenergymandmenvironmentalmmeasurementsmlaboratory




Onemsolidmradiummdecaysmtomformmradonmgas,mitmlosesmthismnumbermofmprotons,mandmthismnumbe
rmofmneutrons,mcombinedmcalledmwhat?m-mCORRECTmANSWERm2mandm2,mAnmAlphamparticle



ERm=m-mCORRECTmANSWERmEquilibriummratio



CRmequalsm-mCORRECTmANSWERmContinuousmradonmmonitoring



GBm=m-mCORRECTmANSWERmGrabmradon/pumpmcollapsiblembag



Daughtermproductsmofmradonm(RDP's)marem-mCORRECTmANSWERmPolonium,mbismuth,mandmlead.



GCm=m-mCORRECTmANSWERmGrabmradon/activatedmcharcoal



ELmequalsm-mCORRECTmANSWERmElectretmionmchamber-long-term



GSm=m-mCORRECTmANSWERmGrabmradon/scintillationmcell



Whatmismthemhalf-lifemofmradonm-mCORRECTmANSWERm3.8mdays