Steel Making in Metallurgy MCQ Questions and Answers | Metallurgical Engineering Page-9 section-1

81.
Properties of alloy steels can be improved significantly by the addition of

A. molybdenum

B. zinc

C. silicon

D. none of these

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82.
In the initial period of slow decarburization, iron oxide content in the slag may rise

A. 14 - 16%

B. 40 - 60%

C. 4 - 6%

D. 0.4 - 0.6%

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83.
Match the facilities in a steel plant in Group 1 with the associated terms listed in Group 2.

Group 1 Group 2

P. Electric arc furnace 1. High top pressure

Q. L-D converter 2. Dummy bar

R. Continuous caster 3. Slag splashing

S. Blast furnace 4. Eccentric bottom tapping

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

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

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

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

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84.
Given the following Assertion 'A' and the Reason 'R'; the correct option is
Assertion A: Phosphorous removal in steel making is favoured by basic slag.
Reason R: Basic slag decreases the activity of P₂O₅ in the slag.

A. Both A and R are true and R is the correct reason for A

B. Both A and R are false

C. A is true but R is false

D. Both A and R are true but R is not correct reason for A

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85.
What is the lining thickness of LD converter

A. 300 - 600 mm.

B. 600 - 1000 mm.

C. 60 - 100 mm.

D. 6 - 10 mm.

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86.
The grain-oriented silicon steel is also known as

A. Corrosion steel

B. Electrical steel

C. Transformer steel

D. None of these

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87.
What are the common uses of Duplex (Austenitic-Ferritic) stainless steels

A. in marine and off-shore oil applications

B. to handle chloride brine solutions

C. in the chemical and petrochemical industries

D. All are correct

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88.
Cooling of semi solidified product just below the mould is called

A. Secondary cooling

B. Primary cooling

C. Tertiary cooling

D. None of these

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89.
The usual energy consumption in electric are furnace steel making is . . . . . . . . k Wh/ton of steel.

A. 60 - 100

B. 400 - 700

C. 1200 - 1500

D. 2000 - 2300

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90.
Hardening due to phase transformation can be realized in

A. High Mn (>18%) steel

B. Martensitic stainless steel

C. Austenitic stainless steel

D. Both B and C

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Group 1	Group 2
P. Electric arc furnace	1. High top pressure
Q. L-D converter	2. Dummy bar
R. Continuous caster	3. Slag splashing
S. Blast furnace	4. Eccentric bottom tapping

Steel Making in Metallurgy MCQ Questions and Answers | Metallurgical Engineering

81. Properties of alloy steels can be improved significantly by the addition of

Answer & Solution

82. In the initial period of slow decarburization, iron oxide content in the slag may rise

Answer & Solution

83. Match the facilities in a steel plant in Group 1 with the associated terms listed in Group 2. Group 1 Group 2 P. Electric arc furnace 1. High top pressure Q. L-D converter 2. Dummy bar R. Continuous caster 3. Slag splashing S. Blast furnace 4. Eccentric bottom tapping

Answer & Solution

84. Given the following Assertion 'A' and the Reason 'R'; the correct option is Assertion A: Phosphorous removal in steel making is favoured by basic slag. Reason R: Basic slag decreases the activity of P2O5 in the slag.

Answer & Solution

85. What is the lining thickness of LD converter

Answer & Solution

86. The grain-oriented silicon steel is also known as

Answer & Solution

87. What are the common uses of Duplex (Austenitic-Ferritic) stainless steels

Answer & Solution

88. Cooling of semi solidified product just below the mould is called

Answer & Solution

89. The usual energy consumption in electric are furnace steel making is . . . . . . . . k Wh/ton of steel.

Answer & Solution

90. Hardening due to phase transformation can be realized in

Answer & Solution

81.
Properties of alloy steels can be improved significantly by the addition of

82.
In the initial period of slow decarburization, iron oxide content in the slag may rise

83.
Match the facilities in a steel plant in Group 1 with the associated terms listed in Group 2.

Group 1 Group 2

P. Electric arc furnace 1. High top pressure

Q. L-D converter 2. Dummy bar

R. Continuous caster 3. Slag splashing

S. Blast furnace 4. Eccentric bottom tapping

84.
Given the following Assertion 'A' and the Reason 'R'; the correct option is
Assertion A: Phosphorous removal in steel making is favoured by basic slag.
Reason R: Basic slag decreases the activity of P₂O₅ in the slag.

85.
What is the lining thickness of LD converter

86.
The grain-oriented silicon steel is also known as

87.
What are the common uses of Duplex (Austenitic-Ferritic) stainless steels

88.
Cooling of semi solidified product just below the mould is called

89.
The usual energy consumption in electric are furnace steel making is . . . . . . . . k Wh/ton of steel.

90.
Hardening due to phase transformation can be realized in