PAX Science NLN Exams collection 2022, (Ans
n n n n n n
wered)
1. Anpersonnblowsnhisnbreathnintonanstrawnthatnisnplacedninnlimewater.nThenlimewaternb
ecomesncloudynbecausenthenperson'snbreathncontains
A.) carbonndioxide.
B.) hydrogen.
C.) oxygen.
D.) nitrogen.
2. Anphysiciannmeasuresnthenpulsenandnbloodnpressuren(BP)nofnallnpatientsnonnanroutinenbasis.n
WhichnofnthesenmeasurementsnshownthennormalnBPnvaluesnfornanrestingnadultnpatient?
A.) 125/95nmmnHg
B.) 120/80nmmnHg
C.) 100/80nmmnHg
D.) 72/120nmmnHg
3. Anwomannsuddenlynchokesnonnanpiecenofnfoodnandnclutchesnfranticallynatnhernthroat.nAnni
mmediatenremedynisnto
A.) havenhernbendnforwardnandntellnherntoncough.
B.) insertnanfingernornanbluntnobjectntowardnthenbacknofnthenmouth.
C.) applynquick,nhardnpressuresnsuccessivelyntonhernabdomen,njustnbeneathnhern
diaphragm.
D.) phonen"emergency"nfornhelp.
4. Annunknownngasnisnmorendensenthannair,ndoesnnotnsupportncombustion,nandnturnsnanl
imewaternsolutionncloudy.nThisngasnisnmostnprobably
A.) ammonia.
B.) methane.
C.) carbonndioxide.
D.) hydrogen.
5. Humanntestesnproduce
A.) eggs.
B.) folliclenstimulatingnhormone.
C.) growthnhormone.
D.) spermatozoa.
,6. Ifnanrednlightnisnpassednthroughnandilutensolutionnofnchlorophyllnsolution,nthens
pectrophotometernwillndetectnwhatnamountnofntransmittancenofnthisnlight?
A.)n100%
B.)n 50n-n75%
C.) Lessnthann25%
D.) Nonen-nanswer:
7. Inndiagnosticntesting,nthenelectroencephalogramnpermitsnthenphysiciannto
A.) examinenthenimpulsesnofnthenspecializednmusclencellsnofnthenheart.
B.) examinenthenimpulsesnofnthennervencellsnwithinnthenbrain.
C.) measurenthenpressurenwithinntheneye.
D.) measurenthenamountnofnairnuponnexhalation.
8. Tonsterilizenanmetalnprobeninnthenoffice,nandentistncouldnusenansteamnsterilizer.nIfnu
navailable,nthennextnmostneffectivenmethodntonsterilizentheninstrumentnwouldnbe
A.) boilingnitninnwaternforn15nminutes.
B.) dippingnitnintonanconcentratednacidnsolution.
C.) heatingnitninnanhotnairnovennatn160°Cnforn20nminutes.
D.) washingnitninnsoapnandnwater.
9. Innvarietiesnofnmatter,nthentermnheterogeneousnmaynbenappliednto
A.) elements,nbutnnotncompounds.
B.) compounds,nbutnnotnelements.
C.) compoundsnandnelements,nbutnnotnmixtures.
D.) mixtures,nbutnnotnelementsnorncompounds.
10. Heatnenergynisnabsorbedninnwhichnofnthesenphasenchanges?
A.) Br2n(l)n->nBr2(s)
B.) Br2n(g)n-->nBr2(l)
C.) Br2n(l)n->nBr2(g)
D.) Br2n(g)n->nBr2(s)
11. Periodontitisnisnanninflammatorynconditionnofnthe
A.) gumntissuenthatnsurroundsnthennecknofneachntooth.
B.) pulpnthatncontainsnnervencellsnandnbloodnvesselsnofnthentooth.
C.) dentinnthatnsurroundsnthensoftnpartnofnantooth.
D.) enamelnthatnprovidesnanhardnsurfacenfornchewing
12. Thenatomsnofnannelementnwithnsevennvalencenelectronsnarenmostnprobablynclassifiednas
, A.) metals.
B.) nonmetals.
C.) metalloids.
D.) noblengases
13. Theninheritednfactorsnthatnarentransmittedninnannorganismnfromngenerationntongenerationna
rencallednits
A.) homozygote.
B.) heterozygote.
C.) genotype.
D.) phenotype.
14. Thenprocessnofnnuclearncellndivisionninnthencellnreproductionnofnplantsndiffersnfromn
mammals.nAnmajorndifferencenisnthat
A.) homologousnchromosomesnarenpaired.
B.) centriolesnarenreplicated.
C.) spindlenfibersnarenmissing.
D.) cellnplatesnarensynthesized.
15. Unicellularnorganismsnthatnhavenannucleusnandncannswimnwithnthenaidnofncilianarene
xamplesnof
A.) monerans.
B.) plants.
C.) fungi.
D.) protozoans.
16. Whichnofnthesenconditionsnisnassociatednwithnsmoking?
A.) Esophagealnvarices.
B.) Tonsillitis.
C.) Emphysema.
D.) Blindness.
17. Whichnofnthesenequationsnbestnillustratesnansynthesisnreaction?
A.) 2Nan+nCl2n->n2NaCl
B.) NaOHn+nHCln->nNaCln+nH2O
C.) 2H2O2n->n2H2On+nO2
D.) CH4n+n2O2n->nCO2n+n2H2O
, 18. Whichnofnthesenhydrocarbonsnisnanmembernofnthenbenzenenfamily?
A.) Toluene.
B.) Ethyne.
C.) Propanone.
D.) Methanol
19. Whichnofnthesenquantitiesnisnmostncloselynassociatednwithnannobject'sninertia?
A.) Weight.
B.) Energy.
C.) Power.
D.) Mass.
20. Whichnofnthesensequencesnofnanatomicnorganization,nfromnthensimplestnlevelntonthenmostnc
omplex,nisnthencorrectnsequence?
A.) Fromntissue,norgan,norgannsystemntonorganism.
B.) Fromnorgannsystem,norgan,ntissuentonorganism.
C.) Fromntissue,norgannsystem,norganntonorganism.
D.) Fromnorgan,norgannsystem,ntissuentonorganism
21. Whichnofnthesensingleninstrumentsnmaynbenusedntonmeasurenthencurrentnflowingnthroughnanc
ircuit?
A.) Anvoltmeter.
B.) Annammeter.
C.) Anpotentiometer.
D.) Annohmmeter.
22. WhichnofnthesentemperaturesnisnknownnasnAbsolutenZero?
A.) 0°C
B.) 0nK
C.) positiven273°C
D.) negativen273nK
23. Whichnpartnofnthenhumanncentralnnervousnsystemncontrolsnvoluntarynmovements?
n n n n n n
wered)
1. Anpersonnblowsnhisnbreathnintonanstrawnthatnisnplacedninnlimewater.nThenlimewaternb
ecomesncloudynbecausenthenperson'snbreathncontains
A.) carbonndioxide.
B.) hydrogen.
C.) oxygen.
D.) nitrogen.
2. Anphysiciannmeasuresnthenpulsenandnbloodnpressuren(BP)nofnallnpatientsnonnanroutinenbasis.n
WhichnofnthesenmeasurementsnshownthennormalnBPnvaluesnfornanrestingnadultnpatient?
A.) 125/95nmmnHg
B.) 120/80nmmnHg
C.) 100/80nmmnHg
D.) 72/120nmmnHg
3. Anwomannsuddenlynchokesnonnanpiecenofnfoodnandnclutchesnfranticallynatnhernthroat.nAnni
mmediatenremedynisnto
A.) havenhernbendnforwardnandntellnherntoncough.
B.) insertnanfingernornanbluntnobjectntowardnthenbacknofnthenmouth.
C.) applynquick,nhardnpressuresnsuccessivelyntonhernabdomen,njustnbeneathnhern
diaphragm.
D.) phonen"emergency"nfornhelp.
4. Annunknownngasnisnmorendensenthannair,ndoesnnotnsupportncombustion,nandnturnsnanl
imewaternsolutionncloudy.nThisngasnisnmostnprobably
A.) ammonia.
B.) methane.
C.) carbonndioxide.
D.) hydrogen.
5. Humanntestesnproduce
A.) eggs.
B.) folliclenstimulatingnhormone.
C.) growthnhormone.
D.) spermatozoa.
,6. Ifnanrednlightnisnpassednthroughnandilutensolutionnofnchlorophyllnsolution,nthens
pectrophotometernwillndetectnwhatnamountnofntransmittancenofnthisnlight?
A.)n100%
B.)n 50n-n75%
C.) Lessnthann25%
D.) Nonen-nanswer:
7. Inndiagnosticntesting,nthenelectroencephalogramnpermitsnthenphysiciannto
A.) examinenthenimpulsesnofnthenspecializednmusclencellsnofnthenheart.
B.) examinenthenimpulsesnofnthennervencellsnwithinnthenbrain.
C.) measurenthenpressurenwithinntheneye.
D.) measurenthenamountnofnairnuponnexhalation.
8. Tonsterilizenanmetalnprobeninnthenoffice,nandentistncouldnusenansteamnsterilizer.nIfnu
navailable,nthennextnmostneffectivenmethodntonsterilizentheninstrumentnwouldnbe
A.) boilingnitninnwaternforn15nminutes.
B.) dippingnitnintonanconcentratednacidnsolution.
C.) heatingnitninnanhotnairnovennatn160°Cnforn20nminutes.
D.) washingnitninnsoapnandnwater.
9. Innvarietiesnofnmatter,nthentermnheterogeneousnmaynbenappliednto
A.) elements,nbutnnotncompounds.
B.) compounds,nbutnnotnelements.
C.) compoundsnandnelements,nbutnnotnmixtures.
D.) mixtures,nbutnnotnelementsnorncompounds.
10. Heatnenergynisnabsorbedninnwhichnofnthesenphasenchanges?
A.) Br2n(l)n->nBr2(s)
B.) Br2n(g)n-->nBr2(l)
C.) Br2n(l)n->nBr2(g)
D.) Br2n(g)n->nBr2(s)
11. Periodontitisnisnanninflammatorynconditionnofnthe
A.) gumntissuenthatnsurroundsnthennecknofneachntooth.
B.) pulpnthatncontainsnnervencellsnandnbloodnvesselsnofnthentooth.
C.) dentinnthatnsurroundsnthensoftnpartnofnantooth.
D.) enamelnthatnprovidesnanhardnsurfacenfornchewing
12. Thenatomsnofnannelementnwithnsevennvalencenelectronsnarenmostnprobablynclassifiednas
, A.) metals.
B.) nonmetals.
C.) metalloids.
D.) noblengases
13. Theninheritednfactorsnthatnarentransmittedninnannorganismnfromngenerationntongenerationna
rencallednits
A.) homozygote.
B.) heterozygote.
C.) genotype.
D.) phenotype.
14. Thenprocessnofnnuclearncellndivisionninnthencellnreproductionnofnplantsndiffersnfromn
mammals.nAnmajorndifferencenisnthat
A.) homologousnchromosomesnarenpaired.
B.) centriolesnarenreplicated.
C.) spindlenfibersnarenmissing.
D.) cellnplatesnarensynthesized.
15. Unicellularnorganismsnthatnhavenannucleusnandncannswimnwithnthenaidnofncilianarene
xamplesnof
A.) monerans.
B.) plants.
C.) fungi.
D.) protozoans.
16. Whichnofnthesenconditionsnisnassociatednwithnsmoking?
A.) Esophagealnvarices.
B.) Tonsillitis.
C.) Emphysema.
D.) Blindness.
17. Whichnofnthesenequationsnbestnillustratesnansynthesisnreaction?
A.) 2Nan+nCl2n->n2NaCl
B.) NaOHn+nHCln->nNaCln+nH2O
C.) 2H2O2n->n2H2On+nO2
D.) CH4n+n2O2n->nCO2n+n2H2O
, 18. Whichnofnthesenhydrocarbonsnisnanmembernofnthenbenzenenfamily?
A.) Toluene.
B.) Ethyne.
C.) Propanone.
D.) Methanol
19. Whichnofnthesenquantitiesnisnmostncloselynassociatednwithnannobject'sninertia?
A.) Weight.
B.) Energy.
C.) Power.
D.) Mass.
20. Whichnofnthesensequencesnofnanatomicnorganization,nfromnthensimplestnlevelntonthenmostnc
omplex,nisnthencorrectnsequence?
A.) Fromntissue,norgan,norgannsystemntonorganism.
B.) Fromnorgannsystem,norgan,ntissuentonorganism.
C.) Fromntissue,norgannsystem,norganntonorganism.
D.) Fromnorgan,norgannsystem,ntissuentonorganism
21. Whichnofnthesensingleninstrumentsnmaynbenusedntonmeasurenthencurrentnflowingnthroughnanc
ircuit?
A.) Anvoltmeter.
B.) Annammeter.
C.) Anpotentiometer.
D.) Annohmmeter.
22. WhichnofnthesentemperaturesnisnknownnasnAbsolutenZero?
A.) 0°C
B.) 0nK
C.) positiven273°C
D.) negativen273nK
23. Whichnpartnofnthenhumanncentralnnervousnsystemncontrolsnvoluntarynmovements?
