Explore topic-wise MCQs in Engineering Materials Metallurgy.

This section includes 18 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.

Liquid carburizing temperature range lies between ________

A. 120-250oC
B. 300-375oC
C. 425-660oC
D. 870-950oC
Answer» E.
Discussion
2.

The molten baths used in liquid carburizing are composed of _________

A. 20-50% sodium cyanide, 40% sodium carbonate
B. 40% sodium cyanide, 20-50% sodium carbonate
C. 10% sodium cyanide, 20% sodium carbonate
D. 20% sodium cyanide, 10% sodium carbonate
Answer» B. 40% sodium cyanide, 20-50% sodium carbonate
Discussion
3.

Gas carburizing differs from pack carburizing due to the use of ________

A. Silicon-providing gas
B. Mercury-providing gas
C. Carbon-providing gas
D. Argon
Answer» D. Argon
Discussion
4.

Prevention of carburizing of components can be done by ___________

A. Adding filler
B. Electroplating
C. Cold working
D. Adding water
Answer» C. Cold working
Discussion
5.

PREVENTION_OF_CARBURIZING_OF_COMPONENTS_CAN_BE_DONE_BY____________?$

A. Adding filler
B. Electroplating
C. Cold working
D. Adding water
Answer» C. Cold working
Discussion
6.

The molten baths used in liquid carburizing are composed of _________$

A. 20-50% sodium cyanide, 40% sodium carbonate
B. 40% sodium cyanide, 20-50% sodium carbonate
C. 10% sodium cyanide, 20% sodium carbonate
D. 20% sodium cyanide, 10% sodium carbonate
Answer» B. 40% sodium cyanide, 20-50% sodium carbonate
Discussion
7.

Gas_carburizing_differs_from_pack_carburizing_due_to_the_use_of_________$

A. Silicon-providing gas
B. Mercury-providing gas
C. Carbon-providing gas
D. Argon
Answer» D. Argon
Discussion
8.

Which of the following is not applicable for liquid carburizing?

A. Uniform temperature
B. Dirty work surface
C. Temperature controlled by pyrometers
D. High cost of carburizing
Answer» C. Temperature controlled by pyrometers
Discussion
9.

Liquid carburizing can be used for producing ________ cases.

A. 0.05-0.1 mm
B. 0.1-0.25 mm
C. 0.3-0.6 mm
D. 0.7-1.0 mm
Answer» C. 0.3-0.6 mm
Discussion
10.

Liquid_carburizing_temperature_range_lies_between_________

A. 120-250<sup>o</sup>C
B. 300-375<sup>o</sup>C
C. 425-660<sup>o</sup>C
D. 870-950<sup>o</sup>C
Answer» E.
Discussion
11.

Which of the following holds true for pack carburizing?

A. Efficient heating
B. Uniform temperature
C. Easy to handle
D. Not readily adoptable
Answer» E.
Discussion
12.

What is the carburizing temperature?

A. 150-250<sup>o</sup>C
B. 400-450<sup>o</sup>C
C. 650-700<sup>o</sup>C
D. 900-950<sup>o</sup>C
Answer» E.
Discussion
13.

What kind of carbon-rich material is used in the carburizing mixture?

A. Charred leather
B. Sodium carbonate
C. Barium carbonate
D. Carbon black
Answer» B. Sodium carbonate
Discussion
14.

The energizer in pack carburizing makes up ________ of the total composition.

A. 10%
B. 25%
C. 40%
D. 80%
Answer» D. 80%
Discussion
15.

Which of the following is not a method of carburizing?

A. Pack carburizing
B. Gas carburizing
C. Cyaniding
D. Nitriding
Answer» E.
Discussion
16.

Steels containing ________ carbon are used for carburizing.

A. 0.1-0.2%
B. 0.2-0.35%
C. 0.4-0.6%
D. 0.7-0.9%
Answer» B. 0.2-0.35%
Discussion
17.

Which of the following is not a diffusion method of surface heat treatment?

A. Carburizing
B. Cyaniding
C. Induction hardening
D. Carbonitriding
Answer» D. Carbonitriding
Discussion
18.

The treatment of steel to get a stronger casing while maintaining a soft core is called _________

A. Surface hardening
B. Tempering
C. Sintering
D. Surface lining
Answer» B. Tempering
Discussion