Top 1000+ Solved Material Science MCQ Questions Answer
Q. lattice vibration affects the properties of material
a. electrical
b. magnetic
c. thermal
d. all of the above
Q. the bonding between atoms breaks due to the
a. reduction in energy possesed by them
b. increase in energy possesed by them
c. chemical reaction
d. none of the above
Q. vacancy defect is assocoated with
a. atom leavesits position and locates in the interstitial sites
b. missing of an atom from its designated position
c. foreign atom occupies the interstitial sites
d. both a and b
Q. any atom when leaves its position and occupies the interstitial sites is called as
a. slf interstitial
b. interstitial
c. both of the above
d. none of the above
Q. when any atom occupies the interstitial position of material increases
a. strength
b. hardness
c. both of the above
d. none of the above
Q. when any atom occupies the interstitial position of material increases
a. strength
b. hardness
c. both of the above
d. none of the above
Q. substitutional impurity defect is associated with
a. atom leaves its posiiton and locates in the interstitial sites
b. foreign atom occupies the lattice posiiton of regular atomic structure
c. foreign atom occupies the interstitial sites
d. missing of an atom from its designated position
Q. Frenkel defect is associated with
a. vacancy and self interstitial defect
b. vacancy and substitution al defect
c. substitution al and self intestitial defect
d. none of the above
Q. if an anion and cation are absent in pair the defect is known as
a. schottky
b. vacancy
c. substitution al
d. frenkel
Q. point defect increase and decrease
a. hardness, electrical conductivity
b. electrical conductivity, hardness
c. hardness, electrical resistance
d. electrical resistance, hardness
Q. the defect associated with addition / missing / misalighnment of a series of atoms from its designated posiiton is called as
a. point defect
b. linear defect
c. surface defect
d. none of the above
Q. the linear defects are introduced in the material during _ of material
a. solidificatio n
b. heat treatment
c. plastic deformation
d. all of the above
Q. burgers vector
a. is a measure of lattice distortion
b. is a measure of lattice distortion and is measured as distance along the close packed directions
c. stacking faults
d. none of the above
Q. a measure of lattice distortion which is measured as a distance along the close packed directions
a. burgers vector
b. barbas vector
c. any one of above
d. none of the above