Top 1000+ Solved Material Science MCQ Questions Answer
Q. dehydration is nothing but
a. removal of metal
b. removal of water
c. removal of matter
d. none of the above
Q. one of the following corrosive gas, possess a highest corrosion rate, withrespect to carbon steels ?
a. co2
b. o2
c. h2s
d. h2
Q. the imperfection sin crystal structure influence the of materials
a. electrical conductivity
b. density
c. strength
d. all of the above
Q. the effect of imperfections in crystal struture can be
a. desirable
b. adverse
c. both a or b
d. none of the above
Q. due to change in mechanical properties of the material can be changed
a. color
b. shape
c. imperfectio ns
d. none of the above
Q. imperfections are introduced during
a. plastic deformation
b. metal forming
c. heat treatment
d. all of the above
Q. vacancy, self interstitial, substitutional are all types of
a. line defects
b. surface defects
c. voliume defects
d. point defects
Q. point defects include
a. vacancy, substitution al, edge dislocations
b. substitution al, edge dislocation, grain boundaries
c. substitution al, edge dislocation,stacking faults
d. vacancy, substitution al, interstitial defects
Q. line defects include
a. edge and screw dislocation
b. edge dislocations and grain boundaries
c. screw dislocations and stacking faults
d. vacancy, substitution al, interstitial
Q. surface defects includes
a. edge and screw dislocation
b. edge dislocations and grain boundaries
c. grain boundaries, twin boundaries, lattice vibrations
d. grain boundaries, twin boundaries, low angle boundary
Q. whioch of the following is not line defect?
a. dislocation
b. low angle grain boundary
c. schottky
d. both b and c
Q. which of the following is line defect ?
a. dislocation
b. low angle grain boundary
c. schottky
d. both b and c
Q. which of the following defect is not surface defect ?
a. dislocation
b. low angle grain boundary
c. schottky
d. both b and c
Q. which of the following is a type of surface defect ?
a. dislocation
b. low angle grain boundary
c. schottky
d. both b and c