COF C42 QUESTIONS WITH CORRECT AN
ff ff ff ff ff
SWERS 2025 ff
ACIDf f -f f CORRECTf f ANSWERf f -Af f solutionf f thatf f hasf f af f pHf f lessf f thanf f 7.0
BASEf f -f f CORRECTf f ANSWERf f -
Af f solutionf f thatf f hasf f af f pHf f greaterf f thanf f 7.0,f f sometimesf f calledf f causticf f orf f alkaline.
BOILINGf f POINTf f -f f CORRECTf f ANSWERf f -
Thef f temperaturef f atf f whichf f thef f vaporf f pressuref f off f af f liquidf f equalsf f thef f atmosphericf f pressu
ref f offff f 14.7ffpoundsffperffsquaref f inchff(psi)fforff760f f mmffoff f mercury.ffWhereffaffboilingf f pointffisffun
availffablef f forf f thef f materialf f inf f questionf f orf f forf f mixturesf f whichf f dof f notf f havef f af f constantf f bo
ilingf f point
,f f forf f thef f purposesf f off f thisf f classification,f f thef f 20-
percentffevaporatedffpointffofffaffdistillationffperformedffinffaccordanceffwithffASTMffDff86ffshallffbeffus
edf f asf f thef f boilingf f pointf f off f thef f liquid.
CEILINGf f LIMITf f -f f CORRECTf f ANSWERf f -
Thef f maximumf f concentrationf f off f anf f airbornef f contaminantf f tof f whichf f onef f mayf f bef f exposedf f
shalfflf f bef f asf f establishedf f byf f thef f regulationsf f off f thef f Unitedf f Statesf f Departmentf f off f Labor,f f a
sf f setf f fortffhf f inf f 29f f CFRf f Partf f 1910.1000,f f orf f iff f notf f listedf f therein,f f thef f ceilingf f Recommende
df f Exposuref f Limffitf f (REL-
C)f f concentrationsf f publishedf f byf f thef f U.S.f f Nationalf f Institutef f forf f Occupationalf f Safetyf f andf f H
ealtffhf f (NIOSH),f f thef f Thresholdf f Limitf f Valuef f —f f Ceilingff(TLV-
C)f f concentrationsf f publishedf f byf f thef f Americanf f Conferencef f off f Governmentalf f Industrialf f Hygi
eniffstsf f (ACGIH),f f thef f ceilingf f Workplacef f Environmentalf f Exposuref f Levelff(WEEL-
Ceiling)f f Guidesf f publishedf f byf f thef f Americanf f Industrialf f Hygienef f Associationf f (AIHA),f f orf f otherf f aff
pprovedf f standard.
CHEMICALf f -f f CORRECTf f ANSWERf f -
Anf f element,f f chemicalf f compoundf f orf f mixturef f off f elementsf f orf f compoundsf f orf f both.
, CHEMICALf f NAMEf f -f f CORRECTf f ANSWERf f -
Theffscientificffdesignationffofffaffchemicalffinffaccordanceffwithfftheffnomenclatureffsystemffdeveloffp
edf f byf f thef f Internationalf f Unionf f off f Puref f andf f Appliedf f Chemistry,f f thef f Chemicalf f Abstractsf f S
erviffceffrulesffofffnomenclature,fforffaffnameffthatffwillffclearlyffidentifyffaffchemicalffforfftheffpurposeffo
fffconductingf f anf f evaluation.
CLOSEDf f CONTAINERf f -f f CORRECTf f ANSWERf f -
Affcontainerffsealedffbyffmeansffofffafflidfforffotherffdeviceffcapableffofffpreventingfftheffescapeffoffflif f qu
id,f f vaporf f orf f dustsf f inf f thef f ordinaryf f coursef f off f storage,f f handlingf f orf f use.
CONTAINERf f -f f CORRECTf f ANSWERf f -
Forf f solidf f andf f liquidf f hazardousf f materials,f f af f vesself f off f 60f f gallonsf f orf f lessf f inf f capacityf f usedf
f forf f sfftoragefforf f transportation.f f Forf f compressedf f gases,ffaf f cylinder,f f pressuref f vesself f orf f tankf f
designedffforf f pressuresf f greaterf f thanf f onef f atmospheref f atf f 68°F.f f Pipes,f f pipingf f systems,f f engi
nesf f andf f engiffnef f fuelf f tanksf f associatedf f withf f solidf f orf f liquidf f hazardousf f materialsf f orf f comp
ressedf f gases,f f shallffnotf f bef f deemedf f tof f bef f containersf f iff f inf f activef f use.
COMBUSTIBLEf f LIQUIDf f -f f CORRECTf f ANSWERf f -
Af f liquid,f f otherf f thanf f af f compressedf f gasf f orf f cryogenicf f fluid,f f havingf f af f closedf f cupf f flashf f poin
tf f atfforf f abovef f 100°Ff f (38°C).
Classf f IIf f Combustiblef f Liquidsf f -f f CORRECTf f ANSWERf f -
Liquidsf f havingf f af f closedf f cupf f flashf f pointf f atf f orf f abovef f 100°Ff f (38°C)f f andf f belowf f 140°Ff f (60°C).
Classf f IIIAf f Combustiblef f Liquidsf f -f f CORRECTf f ANSWERf f -
Liquidsf f havingf f af f closedf f cupf f flashf f pointf f atf f orf f abovef f 140°Ff f (60°C)f f andf f belowf f 200°Ff f (93°C).
Classf f IIIBf f Combustiblef f Liquidsf f -f f CORRECTf f ANSWERf f -
Liquidsf f havingf f closedf f cupf f flashf f pointsf f atf f orf f abovef f 200°Ff f (93°C).
ff ff ff ff ff
SWERS 2025 ff
ACIDf f -f f CORRECTf f ANSWERf f -Af f solutionf f thatf f hasf f af f pHf f lessf f thanf f 7.0
BASEf f -f f CORRECTf f ANSWERf f -
Af f solutionf f thatf f hasf f af f pHf f greaterf f thanf f 7.0,f f sometimesf f calledf f causticf f orf f alkaline.
BOILINGf f POINTf f -f f CORRECTf f ANSWERf f -
Thef f temperaturef f atf f whichf f thef f vaporf f pressuref f off f af f liquidf f equalsf f thef f atmosphericf f pressu
ref f offff f 14.7ffpoundsffperffsquaref f inchff(psi)fforff760f f mmffoff f mercury.ffWhereffaffboilingf f pointffisffun
availffablef f forf f thef f materialf f inf f questionf f orf f forf f mixturesf f whichf f dof f notf f havef f af f constantf f bo
ilingf f point
,f f forf f thef f purposesf f off f thisf f classification,f f thef f 20-
percentffevaporatedffpointffofffaffdistillationffperformedffinffaccordanceffwithffASTMffDff86ffshallffbeffus
edf f asf f thef f boilingf f pointf f off f thef f liquid.
CEILINGf f LIMITf f -f f CORRECTf f ANSWERf f -
Thef f maximumf f concentrationf f off f anf f airbornef f contaminantf f tof f whichf f onef f mayf f bef f exposedf f
shalfflf f bef f asf f establishedf f byf f thef f regulationsf f off f thef f Unitedf f Statesf f Departmentf f off f Labor,f f a
sf f setf f fortffhf f inf f 29f f CFRf f Partf f 1910.1000,f f orf f iff f notf f listedf f therein,f f thef f ceilingf f Recommende
df f Exposuref f Limffitf f (REL-
C)f f concentrationsf f publishedf f byf f thef f U.S.f f Nationalf f Institutef f forf f Occupationalf f Safetyf f andf f H
ealtffhf f (NIOSH),f f thef f Thresholdf f Limitf f Valuef f —f f Ceilingff(TLV-
C)f f concentrationsf f publishedf f byf f thef f Americanf f Conferencef f off f Governmentalf f Industrialf f Hygi
eniffstsf f (ACGIH),f f thef f ceilingf f Workplacef f Environmentalf f Exposuref f Levelff(WEEL-
Ceiling)f f Guidesf f publishedf f byf f thef f Americanf f Industrialf f Hygienef f Associationf f (AIHA),f f orf f otherf f aff
pprovedf f standard.
CHEMICALf f -f f CORRECTf f ANSWERf f -
Anf f element,f f chemicalf f compoundf f orf f mixturef f off f elementsf f orf f compoundsf f orf f both.
, CHEMICALf f NAMEf f -f f CORRECTf f ANSWERf f -
Theffscientificffdesignationffofffaffchemicalffinffaccordanceffwithfftheffnomenclatureffsystemffdeveloffp
edf f byf f thef f Internationalf f Unionf f off f Puref f andf f Appliedf f Chemistry,f f thef f Chemicalf f Abstractsf f S
erviffceffrulesffofffnomenclature,fforffaffnameffthatffwillffclearlyffidentifyffaffchemicalffforfftheffpurposeffo
fffconductingf f anf f evaluation.
CLOSEDf f CONTAINERf f -f f CORRECTf f ANSWERf f -
Affcontainerffsealedffbyffmeansffofffafflidfforffotherffdeviceffcapableffofffpreventingfftheffescapeffoffflif f qu
id,f f vaporf f orf f dustsf f inf f thef f ordinaryf f coursef f off f storage,f f handlingf f orf f use.
CONTAINERf f -f f CORRECTf f ANSWERf f -
Forf f solidf f andf f liquidf f hazardousf f materials,f f af f vesself f off f 60f f gallonsf f orf f lessf f inf f capacityf f usedf
f forf f sfftoragefforf f transportation.f f Forf f compressedf f gases,ffaf f cylinder,f f pressuref f vesself f orf f tankf f
designedffforf f pressuresf f greaterf f thanf f onef f atmospheref f atf f 68°F.f f Pipes,f f pipingf f systems,f f engi
nesf f andf f engiffnef f fuelf f tanksf f associatedf f withf f solidf f orf f liquidf f hazardousf f materialsf f orf f comp
ressedf f gases,f f shallffnotf f bef f deemedf f tof f bef f containersf f iff f inf f activef f use.
COMBUSTIBLEf f LIQUIDf f -f f CORRECTf f ANSWERf f -
Af f liquid,f f otherf f thanf f af f compressedf f gasf f orf f cryogenicf f fluid,f f havingf f af f closedf f cupf f flashf f poin
tf f atfforf f abovef f 100°Ff f (38°C).
Classf f IIf f Combustiblef f Liquidsf f -f f CORRECTf f ANSWERf f -
Liquidsf f havingf f af f closedf f cupf f flashf f pointf f atf f orf f abovef f 100°Ff f (38°C)f f andf f belowf f 140°Ff f (60°C).
Classf f IIIAf f Combustiblef f Liquidsf f -f f CORRECTf f ANSWERf f -
Liquidsf f havingf f af f closedf f cupf f flashf f pointf f atf f orf f abovef f 140°Ff f (60°C)f f andf f belowf f 200°Ff f (93°C).
Classf f IIIBf f Combustiblef f Liquidsf f -f f CORRECTf f ANSWERf f -
Liquidsf f havingf f closedf f cupf f flashf f pointsf f atf f orf f abovef f 200°Ff f (93°C).
