Metallurgical Engineering Gate Yearwise 



Metallurgical Engineering Gate 2019 Questions with Answer

Ques 14 GATE 2019

Match the reactors / refining sites in Column I with the corresponding refining processes in Column II.

A

P-4, Q-1, R-2, S-3

B

P-4, Q-2, R-3, S-1

C

P-2, Q-1, R-4, S-3

D

P-1, Q-3, R-2, S-4


(a) is the correct answer.

Ques 15 GATE 2019

The correct sequence of steelmaking operations is _______
[BOF: Basic Oxygen Furnace; LF: Ladle Furnace; VD: Vacuum Degassing; CC: Continuous Casting].

A

BOF → LF → VD → CC

B

CC → BOF → LF → VD

C

VD → CC → BOF → LF

D

LF → BOF → VD → CC


(a) is the correct answer.

Ques 16 GATE 2019

A blast furnace charged with hematite containing 90 wt.% Fe₂O₃ produces liquid iron with 3.6 wt.% carbon. Coke containing 90 wt.% carbon is charged at a rate of 500 kg per Metric ton of liquid iron produced. The blast furnace top gas contains (by volume), 22% CO, 18% CO₂, and balance nitrogen. The volume of the blast furnace top gas [in m³ (NTP), rounded off to the nearest integer] is _______.
Given: Assume ideal gas behavior, and molar volume of the gas at NTP is 22.4 liter.


(1930) is the correct answer.

Ques 17 GATE 2019

Some students were not involved in the strike.
If the above statement is true, which of the following conclusions is/are logically necessary?
1. Some who were involved in the strike were students.
2. No student was involved in the strike.
3. At least one student was involved in the strike.
4. Some who were not involved in the strike were students.

A

1 and 2

B

3

C

4

D

2 and 3


(c) is the correct answer.

Ques 18 GATE 2019

Five numbers 10, 7, 5, 4 and 2 are to be arranged in a sequence from left to right following the directions given below:
1. No two odd or even numbers are next to each other.
2. The second number from the left is exactly half of the left-most number.
3. The middle number is exactly twice the right-most number.
Which is the second number from the right?

A

2

B

4

C

7

D

10


(c) is the correct answer.

Ques 19 GATE 2019

Two blocks of the same metal are to be welded. The configuration that will undergo the least distortion after welding is _______.


(d) is the correct answer.

Ques 20 GATE 2019

Match the injection metallurgy techniques in Column I with the corresponding objectives in Column II.

A

P-2, Q-1, R-3, S-4

B

P-4, Q-3, R-2, S-1

C

P-3, Q-4, R-1, S-2

D

P-4, Q-1, R-2, S-3


(d) is the correct answer.

Ques 21 GATE 2019

Match the automobile components in Column I with the corresponding manufacturing processes in Column II.

A

P-1, Q-2, R-3, S-4

B

P-3, Q-4, R-1, S-2

C

P-3, Q-2, R-4, S-1

D

P-4, Q-1, R-3, S-2


(b) is the correct answer.

Ques 22 GATE 2019

In sand-mold casting of a metal, it takes 180 seconds for complete solidification of a 27 cm³ cube-shaped casting. All other parameters remaining constant, the total solidification time (in seconds, rounded off to one decimal place) for a cylinder-shaped [radius = 1 cm and height = 6 cm] casting of the same metal, is _______.


(132.0) is the correct answer.

Ques 23 GATE 2019

An arc welding is performed at 400 Amperes, 20 V at a traverse speed of 5 mm⋅s⁻¹. If the heat transfer efficiency is 0.6, the energy input per unit length (in J⋅mm⁻¹, rounded off to the nearest integer) during the process is _______.


(960) is the correct answer.

Ques 24 GATE 2019

The fastest diffusing element in iron at 1100oC is _______.

A

Ni

B

Co

C

Cr

D

C


(d) is the correct answer.

Ques 25 GATE 2019

Hydrogen bonds are stronger than _______.

A

Ionic bonds

B

Metallic bonds

C

van der Waals bonds

D

Covalent bonds


(c) is the correct answer.

Ques 26 GATE 2019

The carbide that is primarily responsible for intergranular corrosion in austenitic stainless steel is _______.

A

Cr₂₃C₆

B

Fe₃C

C

SiC

D

Mn₃C


(a) is the correct answer.

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