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MCQs

Total Questions : 46 | Page 5 of 5 pages
Question 41. The axial relationship of a rhombohedral crystal system is given as ___________
  1.    a = b = c
  2.    a = b ≠ c
  3.    a ≠ b = c
  4.    a ≠ b ≠ c
 Discuss Question
Answer: Option A. -> a = b = c
Answer: (a).a = b = c
Question 42. The interracial angles of a triclinic crystal system are given by __________
  1.    α = β = ϒ = 90°
  2.    α = β = 90° ϒ = 120°
  3.    α = β = ϒ ≠ 90°
  4.    α ≠ β ≠ ϒ ≠ 90°
 Discuss Question
Answer: Option D. -> α ≠ β ≠ ϒ ≠ 90°
Answer: (d).α ≠ β ≠ ϒ ≠ 90°
Question 43. What is the atomic radius of a BCC crystal structure?
  1.    a/2
  2.    a/4
  3.    a√2/4
  4.    a√3/4
 Discuss Question
Answer: Option D. -> a√3/4
Answer: (d).a√3/4
Question 44. In which case can the rotating crystal method for determining crystal structure be used?
  1.    Single crystal
  2.    Polycrystalline
  3.    Fine-grained polycrystalline
  4.    Cold worked crystals
 Discuss Question
Answer: Option B. -> Polycrystalline
Answer: (b).Polycrystalline
Question 45. What is the coordination number of a simple cubic structure?
  1.    6
  2.    8
  3.    10
  4.    12
 Discuss Question
Answer: Option A. -> 6
Answer: (a).6
Question 46. What is the atomic packing factor of BCC structure?
  1.    0.54
  2.    0.68
  3.    0.74
  4.    0.96
 Discuss Question
Answer: Option B. -> 0.68
Answer: (b).0.68

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