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Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering

Learn Chemical Engineering Basics MCQ questions & answers are available for a Chemical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Chemical Engineering Basics MCQ question is the important chapter for a Chemical Engineering and GATE students. Page-4 section-7

Each section contains 100 MCQs on Chemical Engineering Basics .
31
Stresses encountered in the metal forming processes are less than the __________ of the material.
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Answer & Solution
Answer: Option A
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32
Reduction in the grain size reduces the __________ of the material.
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Answer & Solution
Answer: Option D
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33
The maximum value, which the residual stress in a material can reach is the __________ of the material.
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Answer & Solution
Answer: Option A
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34
Freezing of 35% oleum during its shipment in winter is avoided by the addition of small amount of
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Answer & Solution
Answer: Option D
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35
__________ addition increases the depth of hardness of steel.
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Answer & Solution
Answer: Option C
Solution:
Tungsten is a strong carbide-forming element that significantly increases the depth of hardness in steel. When added, tungsten forms stable carbides that penetrate deeper into the steel structure during heat treatment, allowing hardness to extend well below the surface. This makes tungsten especially important in tool steels and high-speed steels, where deep and lasting hardness is required.

Chromium: Improves corrosion resistance and surface hardness, but its primary role is not increasing hardening depth.

Nickel: Enhances toughness and strength, but contributes little to the depth of hardening.

Vanadium: Refines grain size and improves wear resistance, but its effect on hardening depth is less pronounced compared to tungsten.

Therefore, Tungsten is the correct element that increases the depth of hardness of steel.
36
Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10-2 atm, the partial pressure of B is 10-3 atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is
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Answer & Solution
Answer: Option B
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37
Out of the following, the __________ pipe has the least corrosion resistance.
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Answer: Option D
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38
Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
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Answer: Option A
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39
Which of the following is not categorised as the ore agglomeration process?
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Answer: Option C
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40
The activity co-efficient of the solute in a dilute solution
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Answer & Solution
Answer: Option C
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