
QUIZ-2-20251
Quiz by Mustajab Abbasi
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20 questions
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- Q1Metallic bonding occurs mainly in:Pure metals and alloysGasesCeramicsPolymers30s
- Q2Covalent bonds are formed by:Transfer of electronsFree movement of electronsAttraction of ionsSharing of electrons30s
- Q3Materials with covalent bonding generally have:High electrical conductivityHigh ductilityHigh hardness and low electrical conductivityLow hardness30s
- Q4Ionic bonds form when:Atoms share electronsAtoms are already bondedAtoms lose and gain electronsElectrons form a cloud30s
- Q5Copper is used in electrical cables mainly because it has:Very good electrical conductivityHigh melting pointPoor thermal conductivityHigh brittleness30s
- Q6Materials that melt at very high temperatures are called:Ductile materialsInsulatorsElastic materialsRefractory materials30s
- Q7Toughness refers to a material’s ability to:Bend without breakingReturn to its original shapeResist scratchesMelt easily30s
- Q8A very stiff material will:Not deflect much under loadHave low strengthBreak easilyDeflect easily30s
- Q9Covalent bonds are formed by:Free movement of electronsTransfer of electronsAttraction of ionsSharing of electrons30s
- Q10Materials with covalent bonding generally have:High hardness and low electrical conductivityHigh ductilityLow hardnessHigh electrical conductivity30s
- Q11Ionic bonds form when:Atoms lose and gain electronsAtoms share electronsAtoms are already bondedElectrons form a cloud30s
- Q12Density is defined as:Mass per unit volumeForce per volumeWeight per areaVolume per mass30s
- Q13A material with high thermal conductivity will:Melt at low temperatureBe a good insulatorResist heat flowTransfer heat easily30s
- Q14Metallic bonding primarily occurs in which type of materials?Pure metals and alloysGasesCeramicsPolymers30s
- Q15What is responsible for the good electrical and thermal conductivity in metallic bonding?Poor conductivityElectron cloudHigh brittlenessHigh melting point only30s