Material Science And Metallurgy (3131904) MCQs

MCQs of Crystal Geometry and Crystal Imperfection

Showing 31 to 40 out of 60 Questions
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31.

The metallic structure of mild steel is

(a)

Body centered cubic
(b)

Face centered cubic
(c)

Hexagonal close packed
(d)

Cubic structure
Answer:

Option (a)

32.

What is the coordination number of a simple cubic structure?

(a)

6
(b)

8
(c)

10
(d)

12
Answer:

Option (a)

33.

Coordination number for an ideal BCC metallic crystal is

(a)

8
(b)

6
(c)

12
(d)

Varies for different metal
Answer:

Option (a)

34.

What is the coordination number of a FCC structure?

(a)

6
(b)

8
(c)

10
(d)

12
Answer:

Option (d)

35.

The axial relationship of a monoclinic crystal system is given as ___________

(a)

a = b = c
(b)

a = b ≠ c
(c)

a ≠ b = c
(d)

a ≠ b ≠ c
Answer:

Option (d)

36.

The axial relationship of a rhombohedral crystal system is given as ___________

(a)

a = b = c
(b)

a = b ≠ c
(c)

a ≠ b = c
(d)

a ≠ b ≠ c
Answer:

Option (a)

37.

The interracial angles of a hexagonal crystal system are given by __________

(a)

α = β = ϒ = 90  ̊
(b)

α = β = 90  ̊  ϒ = 120  ̊
(c)

α = β = ϒ ≠ 90  ̊
(d)

α ≠ β ≠ ϒ ≠ 90  ̊
Answer:

Option (b)

38.

 The interracial angles of a triclinic crystal system are given by __________

(a)

α = β = ϒ = 90  ̊
(b)

α = β = 90  ̊  ϒ = 120  ̊
(c)

α = β = ϒ ≠ 90  ̊
(d)

α ≠ β ≠ ϒ ≠ 90  ̊
Answer:

Option (d)

39.

Which of the following axis system is being satisfied by cubic crystal system?

(a)

a = b = c, α = β = γ = 90  ̊ 
(b)

a ≠ b = c, α = β = γ = 90  ̊ 
(c)

a = b ≠ c, α = β = γ =90  ̊ 
(d)

a = b = c, α ≠ β = ϒ =90  ̊ 
Answer:

Option (a)

40.

What is the atomic radius of asimple cubic structure?

(a)

a/2
(b)

a/4
(c)

a2/4
(d)

a3/4
Answer:

Option (a)

Showing 31 to 40 out of 60 Questions
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