Explore topic-wise MCQs in Engineering Materials Metallurgy.

This section includes 22 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Materials Metallurgy knowledge and support exam preparation. Choose a topic below to get started.

1.

With the addition of which element, does zinc create resistance to creep?

A. Pb
B. Cd
C. Mg
D. Cu
Answer» D. Cu
Discussion
2.

How much copper is present in Y-alloys?

A. 4%
B. 2%
C. 1.5%
D. 1%
Answer» B. 2%
Discussion
3.

Which of these is not a stage in precipitation hardening treatment?

A. Solution treatment
B. Tempering
C. Quenching
D. Ageing
Answer» C. Quenching
Discussion
4.

What happens when the maximum strength is achieved by the aging process?

A. Precipitate hardening
B. Age hardening
C. Over-aging
D. Natural ageing
Answer» D. Natural ageing
Discussion
5.

Artificial aging process takes place at a temperature range of ________

A. 190-260oC
B. 260-300oC
C. 300-350oC
D. Room temperature
Answer» B. 260-300oC
Discussion
6.

WHAT_HAPPENS_WHEN_THE_MAXIMUM_STRENGTH_IS_ACHIEVED_BY_AGING_PROCESS??$

A. Precipitate hardening
B. Age hardening
C. Over-aging
D. Natural ageing
Answer» D. Natural ageing
Discussion
7.

ARTIFICIAL_AGING_PROCESS_TAKES_PLACE_AT_A_TEMPERATURE_RANGE_OF_________?$

A. 190-260<sup>o</sup>C
B. 260-300<sup>o</sup>C
C. 300-350<sup>o</sup>C
D. Room temperature
Answer» B. 260-300<sup>o</sup>C
Discussion
8.

How much copper is present in Y-alloys?$

A. 4%
B. 2%
C. 1.5%
D. 1%
Answer» B. 2%
Discussion
9.

Which of these is not a stage in precipitation hardening treatment?$

A. Solution treatment
B. Tempering
C. Quenching
D. Ageing
Answer» C. Quenching
Discussion
10.

What is the temperature at which zinc become malleable

A. <100 <sup>o</sup>C
B. 100-150 <sup>o</sup>C
C. >210 <sup>o</sup>C
D. 419 <sup>o</sup>C
Answer» C. >210 <sup>o</sup>C
Discussion
11.

What is the appearance of zinc?

A. Bluish-grey
B. Red
C. Yellow
D. Green
Answer» B. Red
Discussion
12.

The most common casting process for zinc alloys is _______

A. Sand casting
B. Die casting
C. Investment casting
D. Centrifugal casting
Answer» C. Investment casting
Discussion
13.

With the addition of which element, does zinc create a resistance to creep?

A. Pb
B. Cd
C. Mg
D. Cu
Answer» D. Cu
Discussion
14.

What is the melting point of zinc?

A. 419<sup>o</sup>C
B. 600<sup>o</sup>C
C. 907<sup>o</sup>C
D. 950<sup>o</sup>C
Answer» B. 600<sup>o</sup>C
Discussion
15.

Which among the following is an example of a non heat-treatable alloy?

A. Al-Cu
B. Al-Li
C. Al-Mg-Si
D. Al-Mn
Answer» E.
Discussion
16.

Which of these is not a property of duralumin?

A. High strength
B. 1/3 the weight of steel
C. Excellent casting and forging abilities
D. Poor machinability
Answer» E.
Discussion
17.

Which of the following is not a classification of aluminum alloys?

A. Crucible alloys
B. Wrought alloys
C. Cast alloys
D. Heat-treatable alloys
Answer» B. Wrought alloys
Discussion
18.

Which aluminum alloy is known as aircraft aluminum?

A. 6061
B. 6063
C. 7068
D. 7075
Answer» E.
Discussion
19.

_______ is coated onto aluminum to improve its soldering ability.

A. Magnesium
B. Lithium
C. Tin
D. Copper
Answer» D. Copper
Discussion
20.

Compared to copper, how is the electrical conductivity of aluminum?

A. Higher
B. Lower
C. Equal
D. Zero
Answer» B. Lower
Discussion
21.

What is the tensile strength of aluminum?

A. 122.5 GPa
B. 220 MPa
C. 70.5 GPa
D. 45 MPa
Answer» E.
Discussion
22.

What is the melting point of pure aluminum?

A. 520-600<sup>o</sup>C
B. 600<sup>o</sup>C
C. 800<sup>o</sup>C
D. 950<sup>o</sup>C
Answer» C. 800<sup>o</sup>C
Discussion