Mass Transfer MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Mass Transfer, a fundamental topic in the field of Basic Chemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Mass Transfer 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 Mass Transfer mcq questions that explore various aspects of Mass Transfer problems. Each MCQ is crafted to challenge your understanding of Mass Transfer principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Basic Chemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Mass Transfer MCQs are your pathway to success in mastering this essential Basic Chemical Engineering topic.

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

So, are you ready to put your Mass Transfer knowledge to the test? Let's get started with our carefully curated MCQs!

Mass Transfer MCQs | Page 58 of 67

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Q571.
Surface renewal model of mass transfer was enunciated by

a.

Toor and Marchello

b.

Fick

c.

Danckwerts

d.

Stefan

Discuss
Answer: (c).Danckwerts
Q572.
When the __________ the relative humidity of air decreases, despite an increase in the absolute humidity.

a.

temperature rises

b.

pressure rises

c.

temperature falls

d.

pressure falls

Discuss
Answer: (a).temperature rises
Q573.
For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as

a.

Re^0.33

b.

Re^0.53

c.

Re^0.83

d.

Re

Discuss
Answer: (c).Re^0.83
Q574.
The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the

a.

temperature rises.

b.

pressure rises.

c.

temperature falls.

d.

pressure falls.

Discuss
Answer: (a).temperature rises.
Q575.
Unit of molal diffusivity is

a.

cm²/sec gm . mole

b.

gm moles/cm² . sec

c.

gm moles/cm. sec

d.

gm moles/cm². sec

Discuss
Answer: (c).gm moles/cm. sec
Q576.
The term "approach" in a cooling tower refers to the difference in the temperature of the

a.

cold water leaving the tower and the wet bulb temperature of the surrounding air.

b.

hot water entering the tower and the wet bulb temperature of the surrounding air.

c.

hot water entering and the cooled water leaving the cooling tower.

d.

none of these

Discuss
Answer: (a).cold water leaving the tower and the wet bulb temperature of the surrounding air.
Q577.
Binary distillation involves the mass transfer by __________ at the gas-liquid interface.

a.

unidirectional diffusion from liquid to gas phase

b.

unidirectional diffusion from gas to liquid phase

c.

either 'a' or 'b'

d.

a counter diffusion at an almost equal molar rate

Discuss
Answer: (d).a counter diffusion at an almost equal molar rate
Q578.
Equilibrium-moisture curves of different solids

a.

are different

b.

are same

c.

depend on the humidity of the gas

d.

none of these

Discuss
Answer: (a).are different
Q579.
Azeotropism for ethyl alcohol-water system disappears by

a.

increasing temperature

b.

decreasing pressure

c.

increasing pressure

d.

no means

Discuss
Answer: (b).decreasing pressure
Q580.
Degree of freedom for leaching and solvent extraction process is

a.

1

b.

3

c.

0

d.

2

Discuss
Answer: (b).3
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