1)

2)

3)

PROFESSIONALEXAMINATIONBOARDPrePolytechnicTest(PPT)2017

18thApril201712:00PM

Topic:Physics

1.moreiftheexperimentisperformedatahighertemperature/,

2.moreifawireofsteelofsamedimensionisused/,

3.moreifthelengthofthewireisincreased/,

4.moreifthelengthofthewireisdecreased/,

CorrectAnswer:

moreifthelengthofthewireisdecreased/,

Acurrentof4.5Aflowsthroughawirein10min.Howmuchchargeflowsthroughthewire?/4.5A10?

1.1500C

2.2000C

3.2500C

4.2700C

CorrectAnswer:

2700C

AlbertEinsteinexplainedwhichphenomenonusingcorpusculartheory?/?

Theoryofrelativity/

4)

5)

6)

1.Theoryofrelativity/

2.Diffraction/

3.Scattering/

4.Photoelectriceffect/

CorrectAnswer:

Photoelectriceffect/

Whatisthedimensionalformulaofangularspeed?/?

1.LT1

2.LT2

3.T1

4.T

5.T1

6.T

CorrectAnswer:

T1

T1

Findthemomentumofabodyofmass200ghavingakinecenergyof10J?/ ,20010?

1.2000kgm/s

2.20kgm/s

3.2kgm/s

4.0.2kgm/s

CorrectAnswer:

2kgm/s

Whichofthefollowingisascalarquantity?/()?

1.Pressure/

2.Impulse/

3.Velocity/

7)

8)

9)

4.Currentdensity/

CorrectAnswer:

Pressure/

WhatistheSIunitofvelocitygradient?/?

1.m/s//

2.s1/1

3.m/s2//2

4.s/m//

CorrectAnswer:

s1/1

Thenumberofturnsoftheprimaryandsecondaryofanidealtransformeris400and2000,respecvely.Ifthecurrentpassingthroughtheprimaryis200Aandthepowerinputoftheprimaryis20kW,thentheoutputvoltageis________./ :4002000200A()20kW,________

1.500V

2.1000

3.2400

4.1600V

CorrectAnswer:

500V

WhichofthefollowingisNOTaconservativeforce?/?

1.Gravitationalforce/

2.Springforce/

3.Frictionalforce/

4.Electrostaticforce/

CorrectAnswer:

Frictionalforce/

10)

11)

12)

13)

Thenumberofelectriclinesofforceemergingfromaclosedsurfaceinvacuumis1.131011.Thechargeenclosedis_________./ ,1.131011_________

1.

2.

3.

4.

CorrectAnswer:

Eddycurrentsareusedin_________,/________

1.transformers/

2.dcmotor/

3.speedometer/

4.powertransmission/( )

CorrectAnswer:

speedometer/

Theratioofintensitiesoftwosoundwavesis16:25.Whatwillbetheratiooftheiramplitudes?/16:25?

1.4:5

2.5:4

3.256:625

4.625:256

CorrectAnswer:

4:5

ThesubstancewhichisaddedtoLPGcylinderswhilefillingsothatanyescapinggascaneasilybedetectedis________________./,,_______________

1.benzene/

2.ethylalcohol/

sodiumacetate/

14)

15)

16)

3.sodiumacetate/

4.ethylmercaptan/

CorrectAnswer:

ethylmercaptan/

Fouridenticalcellshavinginternalresistanceof1.2eachareconnectedinparalleltoanexternalresistanceof6.Theemfofeachcelltodriveacurrentof3Ainacircuitshouldbe______./1.2,63A.._____

1.18V

2.18.5V

3.18.9V

4.20.1V

CorrectAnswer:

18.9V

Whichofthefollowingstatement(s)is/areCORRECTwithrespecttodispersionphenomenon?

1)Refractiveindexforvioletlightismaximum.

2)Deviationproducedinredlightisminimum.

3)Wavelengthofgreenlightisgreaterthanthatofbluelight./

//?

1)

2)

3),

1.Statements1and2only/12

2.Statements1and3only/13

3.Statements2and3only/23

4.Alltheabovestatements/

CorrectAnswer:

Alltheabovestatements/

Whatwillbetheangleofrefractionwhenarayoflightpassesfromglasstoair?/,?

Greaterthanangleofincidence/

17)

18)

19)

1.Greaterthanangleofincidence/

2.Smallerthanangleofincidence/

3.Equaltoangleofincidence/

4.Equalto90/90

CorrectAnswer:

Greaterthanangleofincidence/

WhenbothinputsofaNANDgatearethesame,itisequivalentto_______./''(NAND),______

1.NOTgate/NOT

2.ORgate/OR

3.ANDgate/AND

4.NORgate/NOR

CorrectAnswer:

NOTgate/NOT

Calculatethewavelengthofsoundwavewhosefrequencyis550Hzandspeedis440m/sinagivenmedium./ ,550440/

1.0.125m/0.125

2.1.25m/1.25

3.12.5m/12.5

4.125m/125

CorrectAnswer:

1.25m/1.25

WhentheamountofworkisdonetobringanobjectclosertotheEarth,gravitaonalpotenalatapoint________________./,_______________

1.isalwaysapositivequantity/

2.isalwaysanegativequantity/

3.canbepositiveornegativebasedontheheightfromtheearth/

isalwayszero/

20)

21)

22)

4.isalwayszero/

CorrectAnswer:

isalwaysanegativequantity/

Aboxermoveshisheadbackwardswhentheopponentgivesapunchtohisheadsoasto_____________./,,_______________

1.increasethemomentumanddecreasetheforce/

2.increasethecontacttimewhichdecreasetheforce/

3.decreasethecontactmewhichincreasetheforce/

4.increasetheimpulse/

CorrectAnswer:

increasethecontacttimewhichdecreasetheforce/

Forconstructiveinterferencetotakeplacebetweentwomonochromaticlightwavesofwavelengthlambda,thepathdifferenceshouldbe_______./,_______

1.

2.

3.

4.

CorrectAnswer:

BoltzmansconstantkBisgivenbytherelation:/kB:

Risuniversalgasconstant/R

NAvogadronumber/N

1.R/N

23)

24)

25)

2.N/R

3.RN

4.N2/R

CorrectAnswer:

R/N

Thenumberofelectronsin1Cchargeis____________./1C ___________

1.6.251020

2.6.251018

3.2.65108

4.5.05108

CorrectAnswer:

6.251018

WhichoneofthegivenarrangementsisCORRECTaboutfriction?/?

1.Rollingfriction

26)

27)

28)

Ramuplacedapieceofirononthesurfaceofwater.Itsankinthewaterbecause________________./,_________

1.thedensityofironismorethanthedensityofwater/,

2.thedensityofironislessthanthedensityofwater/,

3.thebuoyantforceexertedbyfluidismorethanweightofironpiece/,

4.weightofthedisplacedwaterwillbemorethantheweightofthepieceofiron/,

CorrectAnswer:

thedensityofironismorethanthedensityofwater/,

Theabsolutetemperatureofagasismade4timesitsoriginalvalue.Thenthespeedofsoundinitbecomes____________./,__________

1.doubled/

2.fourtimes/

3.threetimes/

4.remainsthesame/

CorrectAnswer:

doubled/

WhichofthegivenstatementisINCORRECTfortheseriesLCRcircuitatresonance?/LCR,?

1.

2.Circuitispurelyresistive/

3.Inductiveandcapacitivereactanceareequal/

4.

5.

6.

CorrectAnswer:

29)

30)

31)

Theradiiofcurvatureofadoubleconvexlensare20cmand40cm,respectively,anditsfocallength=20cm.Therefractiveindexofthematerialofthelensis_______./:204020______

1.3/5

2.5/3

3.4/3

4.5/4

CorrectAnswer:

5/3

A5kgmassispulledbytwoperpendicularforces3Nand4N.Themagnitudeofitsaccelerationis_________./5,3N4N________

1.7N/s2

2.1m/s2

3.0N.s

4.5m/s2

CorrectAnswer:

1m/s2

Thecolorthatdeviatestheleastwhenpassingthroughaprismis________./,,______

1.violet/

2.yellow/

3.indigo/

4.red/

CorrectAnswer:

red/

32)

33)

34)

35)

Atransformerisconnectedtoa240Vacmainanditisgivenasupplyof6Vtoringadoorbell.Thenumberofturnsinprimarycoilis4800.Howmanyturnsdoesthesecondarycoilhave?/ 240V6V4800?

1.110turns/110

2.120turns/120

3.130turns/130

4.140turns/140

CorrectAnswer:

120turns/120

Areaundervelocitymegraphofanobjectmovinginastraightlinerepresents________________./____________

1.distancecoveredbythebody/

2.displacementcoveredbythebody/

3.averagevelocityduringatimeinterval/

4.accelerationofthebody/

CorrectAnswer:

displacementcoveredbythebody/

1.10V

2.10V

3.5V

4.5V

CorrectAnswer:

10V

Calculatetheforcerequiredtoproduceanacceleraonof2m/s2inanobjectofmass5kg./52/2

1.3N

36)

37)

38)

2.5N

3.7N

4.10N

CorrectAnswer:

10N

Aphotonofhighestfrequencyisemittedinwhichoneofthefollowingtransitions?/,?

1.n=1ton=2/n=1n=2

2.n=2ton=1/n=2n=1

3.n=2ton=6/n=2n=6

4.n=6ton=2/n=6n=2

CorrectAnswer:

n=2ton=1/n=2n=1

AandBaretwoneutralbodieshavingsamemass.Whentheyarerubbedagainsteachother,AbecomespositiveandBbecomesnegative.WhichofthefollowingstatementisCORRECT,afterrubbing?/,,?

1.MassofA>MassofB/>

2.MassofB>MassofA/>

3.BothAandBhavethesamemass/

4.BothAandBhavethesameweight/

CorrectAnswer:

MassofB>MassofA/>

Apointsourceoflightiskeptinfrontofaconvexmirrorwhichhasaradiusofcurvature60cm.Theimageisformed15cmbehindthemirror.Theobjectdistancewillbe_______________./60,15____________

1.15cmbehindthemirror/15

2.15cminfrontofthemirror/15

3.30cminfrontofthemirror/30

30cmbehindthemirror/ 30

39)

40)

41)

4.30cmbehindthemirror/30

CorrectAnswer:

30cminfrontofthemirror/30

Whiledrawingwaterfromawell,thebucketofwaterappearstobeheavierwhenitcomesoutofwaterbecause______________./,,,_______

1.thereisnoupthrustduetowater/

2.thegravitaonalpullismoreoutsidethewater/,

3.thebuoyantforcereversesitsdireconasitcomesoutofwater/

4.oftherelavedensity/

CorrectAnswer:

thereisnoupthrustduetowater/

Huygensprincipleofsecondarywavelengthscannotbeusedto_____________./_____________

1.findvelocityoflightinamedium/

2.findthenewpositionofawavefront/

3.explainlawsofreflection/

4.explainSnellslaw/

CorrectAnswer:

findvelocityoflightinamedium/

Theaccelerationtimegraphforabodymovingwithuniformaccelerationis__________________./_______________

1.astraightlineparalleltothetimeaxis/

2.astraightlineparalleltotheaccelerationaxis/

3.astraightlineinclinedtothetimeaxis/

4.astraightlineinclinedtotheaccelerationaxis/

CorrectAnswer:

astraightlineparalleltothetimeaxis/

42)

43)

44)

45)

Amovingcarisbroughttorestwithin10sbyapplyingbrake.Findtheinialvelocityifthe

retardaonduetobrakeis5m/s2./105/2,

1.0.5m/s/0.5/

2.2m/s/2/

3.50m/s/50/

4.50m/s/50/

CorrectAnswer:

50m/s/50/

Thegravitaonalforcebetweentwoobjectsdoesnotdependon__________./________

1.sumofthemasses/

2.productofthemasses/

3.themediumbetweentheobjects/

4.distancebetweenthemasses/

CorrectAnswer:

sumofthemasses/

Asourceofpower2kWproduces1020photons,theradiationobtainedis_______./2,1020,________

1.IRrays/

2.UVrays/

3.Xrays/

4.Microwaves/

CorrectAnswer:

Xrays/

Theescapevelocityofabodyonthesurfaceofaplanetdependson_______________./___________

1.themassofthebody/

2.theangleofprojection/

themassoftheplanet/

46)

47)

48)

3.themassoftheplanet/

4.theshapeofthebody/

CorrectAnswer:

themassoftheplanet/

Asemiconductorisconnectedintheleftgapandametalwireisconnectedintherightgapofametrebridge.Thebalancepointisdetermined.Botharenowheatedsothatchangeinresistanceissame,thenthebalancepointwill_____________./,,,,__________

1.shifttowardsleft/

2.shifttowardsright/

3.dependonmetal/

4.dependontemperature/

CorrectAnswer:

shifttowardsleft/

Whenabodyisinacceleratedmoon,thedistancemegraphisa______________./,______________

1.straightlineinclinedtomeaxis/

2.straightlineparalleltomeaxis/

3.curvedline/

4.straightlineparalleltothedistanceaxis/

CorrectAnswer:

curvedline/

Whathappensifthereisashortcircuit?/( )?

1.Thecurrentinthecircuitreducesdrastically./

2.Therewillbenochangeinthecurrent./

3.Therewillbecontinuousvariationofcurrent./

4.Thereislargeincreaseincurrent./

CorrectAnswer:

Thereislargeincreaseincurrent./

49)

50)

1)

WhatwillbethemagneticfieldatthecentreofacircularcoilofnturnsandradiusrcarryingacurrentI?/nr,I, ?

1.

2.

3.

4.

CorrectAnswer:

Aboyreceiveshisecho5secondslater.Findthedistanceofthereflecngsurfacefromtheboy.Thespeedofsoundinair=342m/s./5=342/

1.1710m/1710

2.855m/855

3.67m/67

4.28.5m/28.5

CorrectAnswer:

855m/855

Topic:Chemistry

WhichoneofthefollowingalkalimetalsreactsdirectlywithnitrogenpresentinairtoformM3N?/,M3N ?

1.Sodium/

2.Lithium/

3.Potassium/

4.Caesium/

CorrectAnswer:

Lithium/

2)

3)

4)

5)

Whichoneofthefollowingpolymersispreparedfromcaprolactam?/,?

1.Nylon6,6/6,6

2.Nylon6/6

3.Nylon6,10/6,10

4.Nylon6,11/6,11

CorrectAnswer:

Nylon6/6

Idenfythesubstancethatisusedasaninsulatorinelectricalwires./,

1.Lead/

2.Iron/

3.PVC/

4.Bakelite/

CorrectAnswer:

PVC/

Solventexchangemethodisusedfortheseparationof__________./________

1.sulphurfromalcohol/

2.sulphurdioxidefromhydrogenchloride/

3.sodiumchloridefromammoniumchloride/

4.potassiumnitratefromsodiumchloride/

CorrectAnswer:

sulphurfromalcohol/

WhichoneofthefollowingmethodsissuitablefortheremovalofC andS presentinnaturalgas?/CO2SO2,?

1.Liquefaction/

2.Adsorption/

Absorptioninalkalinesolution/

6)

7)

8)

3.Absorptioninalkalinesolution/

4.Absorptioninacidicsolution/

CorrectAnswer:

Absorptioninalkalinesolution/

Afarmertreatshissoilwithquicklimeforbeeryield.Thisisbecausethenatureofthesoilistoo_________./________

1.acidic/

2.basic/

3.sandy/

4.loamy/

CorrectAnswer:

acidic/

Theelectrondistributionofasiliconatomis____________./ __________

1.2,8,4

2.2,8,3

3.2,5,8

4.2,3,8

CorrectAnswer:

2,8,4

WhatwouldbethenumberofmolesofH2O2requiredtobringaboutdecolourisationof0.5molesofacidifiedpotassiumpermanganate?/0.5H2O2?

1.5/2moles/5/2

2.2.5/2moles/2.5/2

3.1/2moles/1/2

4.3/2moles/3/2

CorrectAnswer:

2.5/2moles/2.5/2

9)

10)

11)

12)

Atthelimitingvalueofradiusratior+/ris:/r+/r:

1.Forcesofattractionarelargerthantheforcesofrepulsionbetweentheions/,

2.Forcesofattractionaresmallerthantheforcesofrepulsionbetweentheions/,

3.Forcesofattractionandrepulsionareequalbetweentheions/

4.Forcesofattractionandrepulsionbetweentheionsareunaffected./

CorrectAnswer:

Forcesofattractionandrepulsionareequalbetweentheions/

TwosubstancesAandBarecombinedtogethertoformaproductP.AandBcannotbebrokendownintosimplersubstances.IdentifytheINCORRECTstatement./ABPAB

1.Pisacompound/P

2.AandBareelements/AB

3.Phasfixedcomposition/P

4.AandBarecompounds/AB

CorrectAnswer:

AandBarecompounds/AB

Whichoneofthefollowingmixturescanbeseparatedbyusingalcoholassolvent?/?

1.Saltandsand/

2.Sugarandsalt/

3.Sulphurandsand/

4.Saltandsulphur/

CorrectAnswer:

Sugarandsalt/

13)

14)

15)

Inacarboxylicacidwith3carbonatomsand6hydrogenatoms,idenfyitscorrectformulafromtheoponsbelow./36 ,

1.CH3COOCH3

2.CH3COOH

3.CH3CH2COOH

4.C2H5CHO

CorrectAnswer:

CH3CH2COOH

Theoxideoreamongthefollowingis____________./_________

1.Zincblende/

2.Cinnabar/

3.Bauxite/

4.Hornsilver/

CorrectAnswer:

Bauxite/

Whichoneofthefollowingacidscandecolourisepurplecolouredpotassiumpermanganate?/,?

1.Carbonicacid/

2.Sulphuricacid/

3.Hydrochloricacid/

4.Citricacid/

CorrectAnswer:

Citricacid/

3.0Jofenergyisproducedbyacertainlightradiationcontaining61018photons.Whatisthewavelengthofthislightradiation?/3.06x1018?

1.397.6A

16)

17)

18)

2.3614A

3.3976A

4.39.76A

CorrectAnswer:

3976A

IntheThomson'smodelofatom,whichofthefollowingstatementsareINCORRECT?/,?

(i)Electronsareembeddedinthepositivelychargedsphere./ ,:

(ii)Atomiselectricallyneutral./

(iii)Positiveandnegativechargesareequalinmagnitude./

(iv)Stabilityoftheatomisduetotheattractionbetweenelectrons./,

1.(i)and(iii)/(i)(iii)

2.(ii)only/(ii)

3.(i),(ii)and(iii)/(i),(ii)(iii)

4.(iv)only/(iv)

CorrectAnswer:

(iv)only/(iv)

DesignationofthepatternasABABABofsuccessiveverticallayersofidenticalatomsgivesthearrangementcalledas______________./ABABAB______________

1.hexagonalclosepacking/

2.cubicclosepacking/

3.facecentredcubic/

4.bodycentredcubic/

CorrectAnswer:

hexagonalclosepacking/

19)

20)

21)

CisasolubleacidicoxideandDisasolublebase.EispurewaterandFisNaClsoluon,whichoneofthemwouldbehavingthevalueofpHlessthan7?/CDEFNaClpH7,?

1.C

2.D

3.E

4.F

CorrectAnswer:

C

Whichofthefollowingisacombinaonreacon?/?

1.

2.

3.

4.

CorrectAnswer:

Whichoneofthefollowingacidscanbeusedinthepreparationofketonesthroughdecarboxylation?/,?

1.ketoacids/

2.ketoacids/

3.hydoxyacids/

4.hydroxyacids/

CorrectAnswer:

ketoacids/

Whattypeofreaconisrepresentedbelow?/?

1.Displacementreacon/

22)

23)

24)

2.Combinaonreacon/

3.Doubledisplacementreacon/

4.Decomposionreacon/

CorrectAnswer:

Displacementreacon/

EthylenechlorideandethylidenechlorideareisomericcompoundsbutthestatementwhichisNOTtrueforboththecompoundsis:/,:

1.Bothofthemreactwithaqueouspotashandgivethesameproduct./

2.BothofthemgiveBeilsteinstest./

3.Bothofthemreactwithalcoholicpotashandgivethesameproduct./

4.Bothofthemarederivativesofethane./

CorrectAnswer:

Bothofthemreactwithaqueouspotashandgivethesameproduct./

Calculatethenumberofcopperatomsina8.5cmlongcopperwirewhichhasamassof6.4g(relativeatomicmassofcopperis63.55)./6.48.5(63.55)

1.6.034

2.0.6103

3.6.062

4.0.6304

CorrectAnswer:

6.062

Nettleplantcausespainfulstingsduetomethanoicacidsecretedbythem.Whichoneofthefollowingsubstancescanbeusedtorelievethepain?/?

1.Limejuicewhichisacidic/,

2.LeafofadockplantwhichgivesasolutionhavingpH9/,9

25)

26)

27)

3.SaltsoluonwithpH7/7

4.Waterwhichisneutral/,

CorrectAnswer:

LeafofadockplantwhichgivesasolutionhavingpH9/,9

Afullychargedbatterycontains1litreof5.00MH2SO4.TheconcentrationofH2SO4inthebatteryafter2amperesofcurrentisdrawnfrombatteryfor10hourswillbe________./5.00MH2SO4110 2 H2SO4_______

1.0.816M

2.4.6M

3.8.16M

4.0.46M

CorrectAnswer:

4.6M

Reactionofdiazoniumsaltswitharomaticaminesinmildlyacidicsolutiontoformcoloredsubstancesisanexampleof_____________./,___________

1.polymerizationreaction/

2.oxidationreaction/

3.additionreaction/

4.condensationreaction/

CorrectAnswer:

condensationreaction/

90Th232undergoesradioactivedisintegrationinaseriesofstepsandlosesatotalof4particles

and6particles.Whatisthefinalisotopeproducedintheseries?/90Th232,46?

1.82Pb206

2.82Pb208

28)

29)

30)

3.82Pb209

4.83Bi209

CorrectAnswer:

82Pb208

Asubstancewhichisaboveitscriticaltemperature____________./,__________

1.canbeliquefiedbyincreasingthepressure/

2.willexistasasolid/

3.willexistasaliquid/

4.willexistasagasatanypressure/

CorrectAnswer:

willexistasagasatanypressure/

pElectronsofthehalogenareNOTinvolvedindelocalizationforwhichoneofthefollowingcompounds?/,p ?

1.Chlorobenzene/

2.Vinylchloride/

3.Ethylbromide/

4.Bromobenzene/

CorrectAnswer:

Ethylbromide/

Detergentsaremoreeffecveinhardwaterthansoapbecause___________./(),____________

1.ammoniumionsinthedetergentformprecipitatewithhardwater/()

2.calciumionsinthehardwaterdonotformprecipitatewithdetergents/()

3.sulphonateionsinthedetergentformprecipitatewithhardwater/(),

magnesiumionsinthehardwaterformprecipitatewithdetergents/,

31)

32)

33)

4.magnesiumionsinthehardwaterformprecipitatewithdetergents/,()

CorrectAnswer:

calciumionsinthehardwaterdonotformprecipitatewithdetergents/()

Whichofthefollowingisaveryreactivenonmetalstoredunderwater?/?

1.Sulphur/

2.Sodium/

3.Phosphorus/

4.Mercury/

CorrectAnswer:

Phosphorus/

Potatochipsmanufacturersfillthepacketsofchipswithnitrogengas.Itisbecausenitrogengashas:/ :

1.noreacvityanddoesnotfavourrancidity/

2.morereacveandfavoursrancidity/

3.moderatereacvity/

4.favoursrancidity/

CorrectAnswer:

noreacvityanddoesnotfavourrancidity/

Sulphurformsapolyatomicringwitheightatoms.Whichpropertyoftheelementfacilitatesthis?/,?

1.Covalency/

2.Combiningcapacity/

3.Catenaon/

4.Electronicconfiguraon/

34)

35)

36)

37)

CorrectAnswer:

Catenaon/

WhichoneofthefollowinggivesCO2onheang?/CO2?

1.Milkofmagnesia/

2.Slakedlime/

3.Sodiumcarbonate/

4.Limestone/

CorrectAnswer:

Limestone/

InFreundlichadsorponisotherm,thevalueof1/nis___________./,1/n_________

1.1incaseofphysicaladsorpon/1

2.1incaseofchemicaladsorpon/1

3.between0and1inallcases/01

4.between0and1incaseofchemicaladsorption/01

CorrectAnswer:

between0and1inallcases/01

Namethemoleculewhichcontainsadoublebondfromthefollowing?/?

1.Nitrogen/

2.Ethyne/

3.Propene/

4.Cyclohexane/

CorrectAnswer:

Propene/

Arrangethefollowinggasesintheincreasingorderofnumberofmolecules:

4gofoxygen,2gofhydrogen,4gofnitrogen,and2gofchlorine

38)

39)

40)

/:

4,2 ,4 ,2

1. , , ,

2. , , ,

3. , , ,

4. , , ,

CorrectAnswer:

, , ,

Theenergyofmolecularmotionistermedas_____________./_________

1.chemicalenergy/

2.potentialenergy/

3.friction/

4.kineticenergy/

CorrectAnswer:

kineticenergy/

Whichofthefollowingalkenes,1moleofwhichistobetaken,onozonolysiswillgiveonly2molesofanaldehydewithamolarmassof44g/mol?/,144/2?

1.2Pentene/2

2.1Butene/1

3.2Butene/2

4.Propene/

CorrectAnswer:

2Butene/2

Theformationofcyanohydrinfromacarbonylcompoundisanexampleof__________./ __________

1.electrophilicaddition/

41)

42)

43)

2.nucleophileaddition/

3.electrophilicsubstitution/

4.nucleophilesubstitution/

CorrectAnswer:

nucleophileaddition/

Onemoleofacarbonisotopewithahalflifeof10daysdecaystogiveonemoleofhelium.If1.0gmatomoftheisotopeiskeptinasealedtube,howmuchheliumwillaccumulatein20days?/101.0,20?

1.gmatom/

2.gmatom/

3.gmatom/

4.1gmatom/1

CorrectAnswer:

gmatom/

Whatisthemassof1.5moleofoxygenmolecule?/1.5?

1.16g/16

2.24g/24

3.32g/32

4.48g/48

CorrectAnswer:

48g/48

Electromagneticwavestransport_________./ _________

1.charge/

2.energy/

3.frequency/

4.wavelength/

44)

45)

46)

47)

CorrectAnswer:

energy/

Whatisthestrengthingm/litof40volumesolutionofperhydrol?/ 40/?

1.130.8gm/130.8

2.60.71gm/60.71

3.38.08gm/38.08

4.121.4gm/121.4

CorrectAnswer:

121.4gm/121.4

ThreeelementsX,YandZformDobereinerstriad.IftheatomicmassesofXandZare35and126,respecvely,whatwillbethepredictedatomicmassofY?/X,YZXZ:35126,Y?

1.100

2.80

3.217

4.90

CorrectAnswer:

80

0.915gofasampleofchlorineoxideproduced0.355gofchlorineoncompletedecomposition.Calculatethemassofoxygenitwouldyield./0.9150.355

1.1.27g/1.27

2.0.33g/0.33

3.0.56g/0.56

4.0.68g/0.68

CorrectAnswer:

0.56g/0.56

ThemetalwhichisrefinedbyMondsprocessis___________./

48)

49)

50)

ThemetalwhichisrefinedbyMondsprocessis___________./,_________

1.nickel/

2.tanium/

3.copper/

4.zinc/

CorrectAnswer:

nickel/

Gasesmaybedescribedasanyofthefollowingexceptone.IdentifytheINCORRECTdescription./,

1.Highlycompressible/

2.Readilydiffusing/

3.Fluids/

4.Immiscible/

CorrectAnswer:

Immiscible/

Alcoholscanbeproducedbythehydraonof___________./_________

1.alkynes/

2.acids/

3.alkenes/

4.alkanes/

CorrectAnswer:

alkenes/

ThetemperatureandpressureatChennaiare35Cand750mmHg,respectively,whereasatOotytheseare15Cand700mmHg,respectively.WhatwouldbetheratioofdensitiesofairatChennai(d1)andOoty(d2)?/:350C750mmHg,

:150C700mmHg(d1)(d2)?

1.d1/d2=0.998

1)

2)

2.d1/d2=1.00

3.d1/d2=2.05

4.d1/d2=1.55

CorrectAnswer:

d1/d2=1.00

Topic:Maths

1.a=3,b=4

2.a=4,b=2

3.a=1,b=2

4.a=4,b=3

CorrectAnswer:

a=4,b=2

1.8cm,6cm/8,6

2.7cm,4cm/7,4

3.6cm,9cm/6,9

4.8cm,5cm/8,5

CorrectAnswer:

6cm,9cm/6,9

3)

4)

5)

6)

1.2817

2.2718

3.2187

4.2871

CorrectAnswer:

2187

Thediameterofacircularplaygroundis70m.Finditscircumference./70

1.110m/110

2.440m/440

3.220m/220

4.170m/170

CorrectAnswer:

220m/220

If thenn=______./ n=______

1.5

2.6

3.7

4.4

CorrectAnswer:

6

1.1

2.1

7)

8)

9)

3.2

4.2

CorrectAnswer:

1

1.independent/

2.dependent/

3.mutuallyexclusive/

4.independentandmutuallyexclusive/

CorrectAnswer:

independent/

1.2

2.1

3.0

4.3

CorrectAnswer:

3

Whatisthemeanofthefirstninenaturalnumbers?/?

1.5

2.8

3.7

4.4

CorrectAnswer:

10)

11)

12)

5

1.sinx+cosx

2.ex(sinx+cosx)

3.sinx

4.cosx

CorrectAnswer:

sinx+cosx

PerpendiculardistanceofthepointP(a,b,c)fromxaxisis__________./xP(a,b,c)________

1.

2.

3.

4.

CorrectAnswer:

Amarriagehallis40mlongand25mwide.80m2istheareaofthestageinit.Howmuchareaisleftoutfortheseatingarrangement?/402580?

1.450m2/450

2.92m/92

3.900m2/900

4.920m2/920

CorrectAnswer:

920m2/920

13)

14)

15)

If ,then ________./ , ________

1.52

2.51

3.50

4.49

CorrectAnswer:

51

Theratioofthesumandtheproductofthezerosofthequadraticpolynomialf(x)=4x220x+9is_____./f(x)=4x220x+9__________

1.20:9

2.5:4

3.4:9

4.1:5

CorrectAnswer:

20:9

1.28

2.24

3.17

4.32

CorrectAnswer:

32

16)

17)

18)

1.

2.tan2x+tanx+C

3. +C

4.Noneoftheabove/

5.

6.Noneoftheabove/

CorrectAnswer:

+C

Solutionoftheequation is___________./________

1.

2.

3.

4.

CorrectAnswer:

dx=_________

1.0

2.

3.

4.Noneoftheabove/

CorrectAnswer:

19)

20)

21)

1.

2.

3.

4.

CorrectAnswer:

=_________.

1.

2.

3.3

4.

CorrectAnswer:

Howmanylinesofsymmetrycanbedrawninanequilateraltriangle?/?

1.4

22)

23)

24)

2.2

3.3

4.1

CorrectAnswer:

3

Points(2,1),(3,4)and(2,3)formtheverticesofa/an____________./(2,1),(3,4)(2,3)_______

1.equilateraltriangle/

2.isoscelestriangle/

3.scalenetriangle/

4.rightangledtriangle/

CorrectAnswer:

isoscelestriangle/

Setofallpointsinthecomplexplanewhoseabsolutevalue4representsa__________./,4,_________

1.circlewithcentre(0,0)andradius4units/ (0,0)4

2.circlewithcentre(0,0)andradius2units/ (0,0)2

3.parabolawithvertex(0,0)andfocus(4,0)units/(0,0), (4,0)

4.parabolawithvertex(0,0)andfocus(0,4)units/(0,0), (0,4)

CorrectAnswer:

circlewithcentre(0,0)andradius4units/ (0,0)4

1.1squnit/1

2.2squnits/2

3.3squnits/3

4.4squnits/4

CorrectAnswer:2squnits/2

25)

26)

27)

2squnits/2

Ifcoefficientof in is1215,thenk=_______./ 1215,k=__________

1.14

2.15

3.16

4.17

CorrectAnswer:

15

1.

2.

3.

4.

CorrectAnswer:

=_________

1.

2.1

3.

4.

5.

CorrectAnswer:

28)

29)

30)

1

Ifsumof3termsofanarithmeticprogressionis102.Theratioofthegreatesttermto

theleasttermis ,thenthecommondifferenceis_________./

102 ,________

1.7

2.10

3.8

4.9

CorrectAnswer:

10

1.2

2.2

3.1

4.0

CorrectAnswer:

2

Thelargestpositiveintegerthatwilldivide47and75leavingremainders5and3respectively,is_____./________,4775:53

1.8

2.3

3.6

4.9

CorrectAnswer:

6

31)

32)

33)

34)

Thecapacityofahemisphericaltankis155.232l.Finditscurvedsurfacearea./155.232

1.23502cm2/235022

2.25500cm2/255002

3.11088cm2/110882

4.16042cm2/160422

CorrectAnswer:

11088cm2/110882

Findtheratioinwhichthepoint(1,2)dividesinternally,thelinesegmentjoiningthepoints(2,5)and(5,2)is________./________,(2,5)(5,2)(1,2)

1.1:2

2.4:1

3.3:4

4.2:5

CorrectAnswer:

3:4

Thegreatestnumberof4digitswhichisdivisiblebyeachoneofthenumbers18,81and108is_____./_____,18,81108

1.9999

2.9758

3.9720

4.9940

CorrectAnswer:

9720

35)

36)

37)

1.42

2.2

3.1+

4.

CorrectAnswer:

42

IfP ,then ________./P ,________

1.7

2.8

3.4

4.6

CorrectAnswer:

8

Seventimesatwodigitnumberisequaltofourtimesthenumberobtainedbyreversingtheorderofthedigits,andthesumofthedigitsofthenumberis6.Findthedigitinten'splaceoftheoriginalnumber./,,6

1.4

2.3

3.6

4.2

CorrectAnswer:

2

1.

38)

39)

40)

2.

3.

4.

CorrectAnswer:

1.

2.1

3.2

4.Noneoftheabove/

CorrectAnswer:

1

1.

2.

3.

4.Noneoftheabove/

CorrectAnswer:

Ifnthtermofanarithmeticprogressionis83n,thenitscommondifferenceis_______./n83n,________

1.3

2.3

41)

42)

43)

3.2

4.2

CorrectAnswer:

3

Argumentof is_____./ ______

1.

2.

3.

4.

CorrectAnswer:

Ifintheexpansionof ,theratioofthecoefficientof2ndand3rd

termsand3rdand4thterms,respectively,areequal,thenn=______./

,:,n=________

1.5

2.4

3.3

4.6

CorrectAnswer:

5

ThefirsttermofanArithmeticprogressionis3.Ifthesumofitsfirst4termsis14lessthanthesumofits6thand7thterms,thenthe5thtermis_____./34,14,5__________

1.16

2.18

44)

45)

46)

3.23

4.19

CorrectAnswer:

19

1.6

2.

3.

4.

CorrectAnswer:

1.

2.

3.

4.

CorrectAnswer:

47)

48)

49)

=__________.

1.

2.

3.

4.

CorrectAnswer:

Ifthesumoffirst'n'termsofanarithmeticprogressionisgivenbysn=2n2+5n,thenthenth

termoftheA.P.is_____./nsn=2n2+5n,

n_____

1.4n+3

2.2n1

3.6n7

4.3n+2

CorrectAnswer:

4n+3

Iftworegressioncoefficientsare0.8and0.2,thenthevalueofcoefficientofcorrelationis_____./0.80.2,__________

1.0.8

2.0.6

3.0.4

4.0.2

CorrectAnswer:

0.4

50)

TheratioofareasoftwosquaresAandBare4:25.IfthesideofthesquareAis6m,whatisthemeasureofthesideofsquareB?/AB4:25A6B?

1.256m/256

2.15m/15

3.12m/12

4.32m2/32

CorrectAnswer:

15m/15

Twoisoscelestriangleshaveequalverticalanglesandiftheirareasareintheratio36:49,thentheratiooftheircorrespondingmediansis______./()36:49,______

1.4:7

2.6:1

3.6:7

4.7:4

CorrectAnswer:

6:7