Material Science Set 2 MCQs

Q1 | indexong or designation in a unit cell can be done for a particular

point location

direction

plane

all of the above

Q2 | the basis of determining index values for a simple cubic structure is unit cell

2dimensional

3dimensional

both a and b

none of the above

Q3 | circular parenthesis symbolically represents

crystallogra phic point locations

crystaloogra phic directions

crystallogra phic planes

none of the above

Q4 | square brackets symbolocally represents crystallographic -

crystallogra phic point locations

crystaloogra phic directions

crystallogra phic planes

none of the above

Q5 | out of the following is used for reprenstation of Miller Indices for a single plane

{}

[]

()

none of the above

Q6 | out of the following is used for reprenstation of Miller Indices for a single direction

{}

[]

()

none of the above

Q7 | in any cubic crustal structure the corner atoms shared by adjacent unit cells

1

2

4

8

Q8 | in face centered cubic crystal structure the face atom is shared by adjacent unit cells

1

2

4

8

Q9 | in cubic crystal structure, the located atom is shared by 8 adjacent unit cells

center

face

corner

none of the above

Q10 | A higher value of average number of atoms per unit cell indicates

bigger size of materials

higher density of materials

lower density of materials

none of the above

Q11 | co-ordination number is also referred to as

ligancy number

average number of atoms per unit cell

atomic packing factor

none of the above

Q12 | is defined as number of atoms adjacent to and touching a central atoms under consideration

co- ordination number

average number of atoms per unit cell

atomic packing factor

none of the above

Q13 | a higher value of coordination number indicates

bigger size of materials

higher density of materials

lower density of materials

none of the above

Q14 | is defined as fraction of volume occupied by atoms in unit cell

ligancy number

average number of atoms per unit cell

atomic packing factor

none of the above

Q15 | APN is defined as

ratio of volume occupied by atoms in unit cell to volume of unit cell

ratio of volume of unit cell to volume occupied by atoms in unit cell

ratio of volume of unit cell to volume of crystal structure

none of the above

Q16 | a higher value of APN number indicates

bigger size of materials

higher density of materials

higher value of averagge niumber of atoms per unit cell

both b and c

Q17 | in simple cubic crystal structure there arenumber of corner atoms

1

4

8

Q18 | in simple cubic crystal structure there arenumber of face atom

1

4

8

none of the above

Q19 | in simple cubic crystal structure, the average number of atoms per unit cell is

1

2

4

6

Q20 | in a cubic crystal structure, the average number of atoms per unit cell is 1

simple cubic

body centred

face centred

hexagonal close packed

Q21 | in simple cubic crystal structure, the relationsheep between lattice constant and radius of atom is given by

a=r/2

r=a/2

r=√3a/4

r=√3r/4

Q22 | the average packing factor for simple cubic crystal is given as

0.52

0.68

0.74

0.85

Q23 | the coordination number for simple cubic structure is given as

6

8

12

14