Top 1000+ Solved Material Science MCQ Questions Answer

From 106 to 120 of 923

Q. Material having cohesive strength shows large plastic deformation

a. high

b. low

c. constant

d. none of the above

  • a. high

Q. Material having CRSS shows large plastic deformation

a. high

b. low

c. constant

d. none of the above

  • b. low

Q. Most polymers are type of materials

a. non- crystalline

b. crystalline

c. both a & b

d. none of the above

  • a. non- crystalline

Q. The basis of determining index values for a simple structure is unit cell consisting of

a. 2-dimension spatial axes

b. 3-dimensional spatial axes

c. both a & b

d. none of the above

  • b. 3-dimensional spatial axes

Q. The constant distance between adjacent atoms of unit cell is called as           

a. unit cell

b. lattice angle

c. crystal

d. lattice constant

  • d. lattice constant

Q. The following mechanism contributes very little the diffusivity

a. vacancy

b. interstitial

c. substitution al

d. self- interstitial

  • d. self- interstitial

Q. The geometry of unit cell can be completely defined by _ -

a. wt. of unit cell

b. three edge lengths of unit cell ( a,b & c)

c. three interaxial angles of unit cell

d. both b & c

  • d. both b & c

Q. The lattice above the dislocation line is in in negative edge dislocations

a. tension

b. shear

c. compression

d. all

  • a. tension

Q. The lattice above the dislocation line is in in positive edge dislocations

a. tension

b. shear

c. compression

d. all

  • c. compression

Q. The smallest representation of geometry of crystal structure of a material is called

a. crystal structure

b. crystal lattice

c. unit cell

d. crystal

  • c. unit cell

Q. The study of different pattern formation of atoms is called as

a. metallurgy

b. crystallogra phy

c. physics

d. none of the above

  • b. crystallogra phy

Q. This is a one type of stacking fault

a. twinns

b. extrinsic

c. glide

d. climb

  • b. extrinsic

Q. This is a one type of twin

a. forged

b. cast

c. rolled

d. mechanical

  • d. mechanical

Q. Time dependent permanent deformation is called _.

a. plastic deformation

b. elastic deformation

c. creep

d. anelastic deformation

  • c. creep
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