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This set of Material Science Multiple Choice Questions & Answers (MCQs) focuses on Material Science Set 11

Q1 | Cold working process is carried out on……….. Recrystallisation temp.
  • equal
  • above
  • below
  • none of the above
Q2 | Coordination number for closest packed crystal structure
  • 16
  • 12
  • 8
  • 4
Q3 | Coordination number in simple cubic crystal structure
  • 8
  • 6
  • 12
  • 4
Q4 | Coordination Number of Body-Centered Cubic structure is…..
  • 6
  • 8
  • 10
  • 12
Q5 | Ligancy of FCC structure are…..
  • 6
  • 8
  • 10
  • 12
Q6 | HCP structure have ligancy …..
  • 6
  • 8
  • 10
  • 12
Q7 | Crystal structure is arrangement ofin different patterns
  • electrons
  • protons
  • atoms
  • crystals
Q8 | Crystallographic planes are represented by 3 numbers enclosed in                 
  • {} bracket
  • [ ] square bracket
  • ( ) raound bracket
  • none of the above
Q9 | crystallography is study of
  • pattern formation of electrons
  • patterns formation of protons
  • different pattern formation of atoms
  • none of the above
Q10 | Cu diffuses in FCC Ni, this is type ofimpurity
  • substitution al
  • interstitial
  • both a & b
  • none of the above
Q11 | Decrease in free energy during recovery is attributed to
  • excess point defects
  • excess dislocations
  • grain boundaries
  • all
Q12 | Decrease in free energy during recrystallization is attributed to
  • excess point defects
  • excess dislocations
  • grain boundaries
  • all
Q13 | Deformation of steel at room temperature is
  • hot working
  • cold working
  • both a and b
  • can’t say
Q14 | Density of material depends on …..
  • no.of atoms/unit cell
  • atomic packing factor
  • coordinatio n number
  • both a&b
Q15 | Dimensional accuracy is better in
  • hot working
  • cold working
  • both a and b
  • can’t say
Q16 | Dislocations have types
  • 2
  • 1
  • 3
  • 5
Q17 | Example for strengthening mechanism in single-phase material
  • strain hardening
  • precipitatio n hardening
  • fiber strengthenin g
  • dispersion strengthenin g
Q18 | FCC crystal having crystal systems.
  • 12
  • 10
  • 6
  • 24
Q19 | FCC have Average no. of atoms per unit cell
  • 6
  • 2
  • 4
  • 8
Q20 | FCC have ligancy number
  • 6
  • 12
  • 4
  • 8
Q21 | FCC having atomic packing factor
  • 0.68
  • 0.52
  • 0.74
  • 0.72
Q22 | FCC having stacking
  • abcabca bc
  • aaaaaaa
  • abababa b
  • abcabab c
Q23 | FCC materials are good in ….
  • brittle
  • malleable
  • ductile
  • hard
Q24 | Figure out the odd one in the following
  • frenkel defect
  • tilt boundary
  • twist boundary
  • stacking fault
Q25 | Fine grain size, usually, can not be obtained during the following process
  • slow cooling
  • increasing nucleation rate
  • retarding grain growth
  • fast cooling