MTL 200 QUESTIONS WITH CORRECT ANSWERS 2025

MTL 200 QUESTIONS WITH CORRECT
ANSWERS 2025
6RpropertiesRofRaRsolidRmaterialR-RCORRECTRANSWERR-1)Mechanical

2)Electrical

3)Thermal

4)Magnetic

5)Optical

6)DeteriorationR(chemicalRreaction)



ClassificationRofRMetalsR(5Rtypes)R-RCORRECTRANSWERR-
1)ComposedRofRatRleastR1RmetallicRelement

2)AtomsRarrangedRorderly

3)RelativelyRDense

4)RelativelyRStiffRandRStrong

5)GoodRconductorsRofRheatRandRelectricity



ClassificationRofRCeramicsR(4Rtypes)R-RCORRECTRANSWERR-
1)RCompoundsRbetweenRmetallicRandRnonmetallicRelements

2)RCommonlyR(oxides,Rnitrides,Rcarbides)

3)RRelativelyRstiffRandRstrong

4)VeryRbrittleR(highRsusceptibilityRtoRfractures)



ClassificationRofRPolymersR(6Rtypes)R-RCORRECTRANSWERR-1)TheRfamilyRofRplasticRandRrubbers

2)LargeRmolecularRstructures

3)CanRbeRductile/pliableR

4)KnownRtoRsoften/decomposeRoverRtime

,5)LowRelectricRconductivity

6)Nonmegnetic



ClassificationRofRCompositesR(2Rtypes)R-RCORRECTRANSWERR-
1)ComeRfromR2RorRmoreRtypesRofRmaterialR(metals,Rceramics,Rpolymers)

2)DesignedRtoRachieveRmultipleRproperties



SemiconductorsR-RCORRECTRANSWERR-BothRanRinsulatorRandRaRconductor



ElectronsRinRAtomsR-RCORRECTRANSWERR-
ElectronsRonlyRhaveRspecificRvaluesRofRenergy,RifRenergyRlevelsRchange,RelectronsRmustRmakeRaRqua
ntumRjump



HowRdoRelectronsRquantumRjump?R(2Rpoints)R-RCORRECTRANSWERR-
1)EitherRbyRabsorbingRenergyRandRmovingRup

2)OrRbyRreleasingRenergyRandRmovingRdown



QuantumRNumbersR(4RparametersRtoRdescribeRe)R-RCORRECTRANSWERR-1)Size

2)Shape

3)SpatialRorientation

4)ProbabilityRdensity



PrincipleRQuantumRNumberR1R(shellRletter,RandRsub-shell)R-RCORRECTRANSWERR-ShellRletterRK

Sub-shellRS



PrincipleRQuantumRNumberR2R(shellRletter,RandRsub-shell)R-RCORRECTRANSWERR-ShellRletterRL

Sub-shellRs,p

, PrincipleRQuantumRNumberR3R(shellRletter,RandRsub-shell)R-RCORRECTRANSWERR-ShellRletterRM

Sub-shellRs,p,d



PrincipleRQuantumRNumberR4R(shellRletter,RandRsub-shell)R-RCORRECTRANSWERR-ShellRletterRN

Sub-shellRs,p,d,f



ElectronRSpinRMovementR-RCORRECTRANSWERR-+1/2,R-1/2



GroundRStateR-RCORRECTRANSWERR-electronsRoccupyRallRtheRlowestRenergyRstates



HydrogenRgroundRstateR-RCORRECTRANSWERR-1s^1



HeliumR-RCORRECTRANSWERR-1s^2



SodiumR-RCORRECTRANSWERR-1s^2,2s^2,2p^6,3s^1



ElectropositiveR-RCORRECTRANSWERR-elementsRcapableRofRgivingRupRelectrons



ElectronegativeR-RCORRECTRANSWERR-elementsRreadyRtoRacceptRelectrons



BondingREnergyR-RCORRECTRANSWERR-Eo=energyRrequiredRtoRseparateRtheRatoms



TheRPrimaryRBondR(3Rtypes)R-RCORRECTRANSWERR-1)Ionic

2)Covalent

3)Metallic