Modes and Diffusion MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Modes and Diffusion, a fundamental topic in the field of Mass Transfer. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Modes and Diffusion MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Modes and Diffusion mcq questions that explore various aspects of Modes and Diffusion problems. Each MCQ is crafted to challenge your understanding of Modes and Diffusion principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Mass Transfer tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Modes and Diffusion MCQs are your pathway to success in mastering this essential Mass Transfer topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Modes and Diffusion. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

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Modes and Diffusion MCQs | Page 5 of 12

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Q41.
In industries titanium is hardened through diffusion of carbon. The concentration of carbon at 1mm into the surface of the titanium slab is 0.25kg/m³ and at 3mm the concentration is 0.68kg/m³. The rate at which the carbon is entering into its surface is 1.27*10โปโนkg/m².s. Calculate the value of diffusion coefficient of carbon.
Discuss
Answer: (a).5.91*10โป¹²
Q42.
The mass transfer by convection can take place under how many conditions?

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (b).2
Q43.
Lewis number is given by
Discuss
Answer: (d).ฮฑ/D
Q44.
Prandtl number is given by
Discuss
Answer: (a).V/ฮฑ
Q45.
Schmidt number is given by
Discuss
Answer: (c).V/D
Discuss
Answer: (d).hโ‚˜ L/D
Discuss
Answer: (a).Prandtl number = Schmidt number= Lewis number
Q48.
Convective mass transfer involves the transportation of material between a boundary surface and a moving fluid or between two immiscible fluids. It is prescribed by the relation
Discuss
Answer: (c).hโ‚˜ (d Cะฒ)
Q49.
Which number forms the connecting link between the velocity and temperature profiles?
Discuss
Answer: (b).Prandtl number
Q50.
Which number forms the connecting link between the velocity and concentration profiles?
Discuss
Answer: (a).Schmidt number