The Ultimate Materials Science Practice Test!

82 Questions | By MEMQUIZ | Updated: Jul 13, 2022 | Attempts: 1647

Questions

Settings

Feedback

During the Quiz End of Quiz

Play as

Quiz Flashcard

Create your own Quiz

The Ultimate Materials Science Practice Test! - Quiz

Questions and Answers

1.

1) The crystal structure of alfa iron is
- A.
  
  (A) Simple Cubic
- B.
  
  (B) Face centered cubic
- C.
  
  (C) Body centered cubic
- D.
  
  (D) Close packed hexagonal
2.

2) Which of the following metal has lowest melting point?
- A.
  
  (A) Antimony
- B.
  
  (B) Tin
- C.
  
  (C) Silver
- D.
  
  (D) Zinc
3.

3) Metal with hexagonal close packed structure is
- A.
  
  (A) silver
- B.
  
  (B) Iron
- C.
  
  (C) Magnesium
- D.
  
  (D) Aluminium
4.

4) The structures which have the highest packing of atoms are
- A.
  
  (A) hexagonal close packed lattice
- B.
  
  (B) body central cubic lattice
- C.
  
  (C) simple cubic lattice
- D.
  
  (D) none of the above
5.

5) In Brinell hardness tester the load for aluminium is
- A.
  
  A) 300 kg
- B.
  
  B)1500 kg
- C.
  
  C) 1000 kg
- D.
  
  D)500 kg
- E.
  
  E)100 kg
6.

6) In Brinell hardness testing the timer for loading is
- A.
  
  A) 1 second
- B.
  
  B) 2 seconds
- C.
  
  C) 5 seconds
- D.
  
  D) 15 seconds
- E.
  
  E) 1 minute
7.

7) In Brinell hardness testing the minimum thickness of the specimen should be
- A.
  
  A) Less than 5 times the depth of impression
- B.
  
  B) Less than 10 times the depth of impression
- C.
  
  C) Equal to 10 times the depth of impression
- D.
  
  D) More than 10 times the depth of impression
- E.
  
  E) Thickness of specimen has no relevance to the depth of impression
8.

8) Indenter used in Vickers hardness testing machine is
- A.
  
  A) 25 mm dia ball
- B.
  
  B) 15 mm dia ball
- C.
  
  C) 10 mm dia ball
- D.
  
  D) Conical indentor with 120? apex angle
- E.
  
  E) Diamond square-based pyramid
9.

9) Angularity of the square base pyramid in Vickers hardness tester is
- A.
  
  A) 90
- B.
  
  B)11
- C.
  
  C) 120
- D.
  
  D)136
- E.
  
  E)150
10.

10) The property which enables metals to be drawn into wire is known as
- A.
  
  A) Malleability
- B.
  
  B)Ductility
- C.
  
  C)Straining
- D.
  
  D)Plastic deformation
- E.
  
  E) Elastic deformation
11.

11) Slow plastic deformation of metals under a constant stress is known as
- A.
  
  A) Fatigue
- B.
  
  B)Proof deformation
- C.
  
  C) Gradual deformation
- D.
  
  D) Creep
- E.
  
  E) Endurance failure
12.

12) In which of the following cases creep is an important consideration?
- A.
  
  A) Cast iron water pipes
- B.
  
  B)Cycle chains
- C.
  
  C) Gas turbine blades
- D.
  
  D) Steam engine flywheel
- E.
  
  E) All of the above
13.

13) The rollers of a cycle chain are subjected to
- A.
  
  A) Compressive stress
- B.
  
  B) Tensile stress
- C.
  
  C) Shear stress
- D.
  
  D) Fatigue stress
- E.
  
  E) Creep stress
14.

14) Which metal has the lowest melting point?
- A.
  
  A) Iron
- B.
  
  B) Copper
- C.
  
  C) Silver
- D.
  
  D) Magnesium
- E.
  
  E) Aluminium
15.

15) Which of the following metals has highest specific gravity?
- A.
  
  A) Iron
- B.
  
  B) Silver
- C.
  
  C) Copper
- D.
  
  D) Aluminium
- E.
  
  E) Brass
16.

16) Which of the following metal has the lowest specific gravity?
- A.
  
  A) Monal metal
- B.
  
  B) Magnesium
- C.
  
  C) Copper
- D.
  
  D) Bronze
- E.
  
  E) Cast iron
17.

17) Brinell hardness of nitrided surface may be of the order of
- A.
  
  A) 100
- B.
  
  B) 150 to 200
- C.
  
  C) 200 to 250
- D.
  
  D) 300 to 450
- E.
  
  E) More than 600
18.

18) Vicker's hardness number of diamond could be of the order of
- A.
  
  A) 15000
- B.
  
  B)12000
- C.
  
  C) 8000
- D.
  
  D)4000
- E.
  
  E) 800
19.

19) Which of the following is a noble metal?
- A.
  
  A) Aluminium
- B.
  
  B) Stainless steel
- C.
  
  C) Nickel
- D.
  
  D) Platinum
- E.
  
  E) Chromium
20.

20) Lowest melting point may be expected for
- A.
  
  A) Aluminium
- B.
  
  B) Brass
- C.
  
  C) Copper
- D.
  
  D) Lead
- E.
  
  E) Zirconium
21.

21) In order to observe the grain size of steel samples under microscope, the magnification should be the order of
- A.
  
  A)2
- B.
  
  B)10
- C.
  
  C)20
- D.
  
  D)100
- E.
  
  E)1500
22.

22) There are 14 atoms in a unit cell of
- A.
  
  A) Body centred cubic space lattice
- B.
  
  B) Face centred cubic space lattice
- C.
  
  C) Close packed hexagonal space lattice
- D.
  
  D) All of the above
- E.
  
  E) None of the above
23.

23) The coordination number of NaCl is
- A.
  
  A) 2
- B.
  
  B) 3
- C.
  
  C) 6
- D.
  
  D) 8
- E.
  
  E) 9
24.

24) Maximum hardness that can be achieved in plain carbon steel is of the order of
- A.
  
  A) 50 Rockwell 'C'
- B.
  
  B) 66 - 67 Rockwell 'C'
- C.
  
  C) 100 - 150 Rockwell 'C'
- D.
  
  D) 80-85 Rockwell 'C'
- E.
  
  E) There is no such limit for hardness
25.

25) The number of atoms per unit cell in BCC is
- A.
  
  A) 9
- B.
  
  B) 3
- C.
  
  C) 4
- D.
  
  D) 6
- E.
  
  E) 8