Material Science in Metallurgy MCQ Questions and Answers

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Enhance your knowledge of Material Science in Metallurgy with this comprehensive collection of MCQ questions and answers. These MCQ questions and answers in Material Science in Metallurgy are specifically designed for students of Metallurgical Engineering who are preparing for the GATE Exam. Strengthen your preparation and excel in your studies with this valuable resource. Page-3 section-1

A heating element that is resistant in air upto 1700°C is

A) platinum-rhodium B) silicon carbide C) molybdenum disilicide D) tungsten

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Match the non-ferrous alloy in Group 1 with their applications in Group 2.

Group 1	Group 2
P. Ti alloy	1. Nuclear reactors
Q. Zr alloy	2. Bells
R. Ni alloy	3. Dental implants
S. Cu alloy	4. Gas turbines

A) P-3, Q-1, R-4, S-2 B) P-2, Q-3, R-4, S-1 C) P-2, Q-1, R-3, S-4 D) P-3, Q-4, R-1, S-2

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

An alloy of Fe-0.4% C is

A) cast iron B) hypoeutectoid steel C) hypereutectoid steel D) eutectoid steel

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Answer & Solution

Answer: Option B

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Select the incorrect statement related to the effect of a small amount of carbon addition on mechanical properties of iron.

A) Ductile-Brittle-Transition-Temperature (DBTT) increases B) Hardenability increases C) Toughness increases D) Yield point phenomenon occurs

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Answer & Solution

Answer: Option C

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As temperature increases, the electrical resistivities of pure metals $$\left( {\rho m} \right)$$ and intrinsic semiconductors $$\left( {\rho s} \right)$$ vary as follows

A) Both $$\rho m$$ and $$\rho s$$ increase B) Both $$\rho m$$ and $$\rho s$$ decrease C) $$\rho m$$ increases and $$\rho s$$ decreases D) $$\rho m$$ decreases and $$\rho s$$ increases

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Answer & Solution

Answer: Option C

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Which of the following materials do not respond well to induction hardening?

A) Ferritic cast iron B) Low carbon steel C) Medium carbon steel D) Pearlitic cast iron

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Answer & Solution

Answer: Option D

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Match the properties in Group 1 with materials in Group 2.

Group 1	Group 2
P. Diamagnetic	1. Aluminium
Q. Paramagnetic	2. Copper
R. Ferromagnetic	3. Yittrium iron garnet
S. Ferrimagnetic	4. Cobalt

A) P-4, Q-3, R-2, S-1 B) P-2, Q-1, R-4, S-3 C) P-3, Q-4, R-2, S-1 D) P-2, Q-4, R-1, S-3

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Answer & Solution

Answer: Option B

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Match the materials in Group 1 with their functional applications in Group 2.

Group 1	Group 2
P. Nb₃Sn	1. Dielectric
Q. Ga. As	2. Soft magnet
R. Fe - 4% Si alloy	3. Super conductor
S. SiO₂	4. Semi-conductor

A) P-3, Q-1, R-4, S-2 B) P-1, Q-4, R-2, S-3 C) P-3, Q-2, R-4, S-1 D) P-3, Q-4, R-2, S-1

Discuss

Answer & Solution

Answer: Option D

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Match the following components to their material.

P. Bush bearings	1. Tungsten-silver
Q. Incandescent lamp filaments	2. Copper-tin
R. Cutting tools	3. Thoria doped tungsten
S. Heavy duty electrical contacts	4. Tungsten carbide-13% cobalt

A) P-2, Q-3, R-4, S-1 B) P-2, Q-3, R-1, S-4 C) P-4, Q-3, R-2, S-1 D) P-1, Q-2, R-3, S-4

Discuss

Answer & Solution

Answer: Option A

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Lead is added to 60 - 40 brass primarily to improve

A) machinability B) corrosion resistance C) fluidity D) strength

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Material Science in Metallurgy MCQ Questions and Answers | Metallurgical Engineering