Top 1000+ Solved Material Science MCQ Questions Answer
Q. -------- is the low temperature phenomenon which results in the rstoration of the physical properties without any observable change in microstructure.
a. grain size
b. recovery
c. grain growth
d. recrystallizat ion
Q. Grain growth is an increase in ----- --.
a. grain size
b. hardness
c. malleability
d. brittleness
Q. A metal is said to be--------- worked, if it is mechanically processed below the crystallization temperature of the metal.
a. hot
b. cold
c. rolled
d. bend
Q. -------- working is always accompanied by strain hardening.
a. hot
b. cold
c. rolled
d. all these of above
Q. -------- working increases ultimate tensile strength.
a. cold
b. hot
c. annealing
d. none of the above
Q. Annealing is done:
a. to harden the surface
b. surface smoothnes s
c. relievin g stresse s
d. improving micro structure for good surface finish
Q. Among the crystal structure, which has the highest packing fraction.
a. bcc
b. fcc
c. diamon d cube
d. hcp
Q. The miller indices are the same for:
a. parall el plane s
b. perpendicul a r planes
c. orthogon al planes
d. crystallogra p hic planes
Q. The crystal structure of all the following material is HCP except:
a. graphite
b. zinc
c. magnesium
d. aluminium