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This set of Material Science Multiple Choice Questions & Answers (MCQs) focuses on Material Science Set 2
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