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 8 of 67

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Q71.
Raoult's law applies to the

a.

all liquid solutions

b.

non-ideal solution only.

c.

non-volatile solute.

d.

solvents.

Discuss
Answer: (d).solvents.
Q72.
The reason for preferring packed towers over plate towers in distillation practice is that the packed tower operation gives

a.

low pressure drop and high hold up.

b.

high pressure drop and low hold up.

c.

low pressure drop and low hold up.

d.

high pressure drop and high hold up.

Discuss
Answer: (c).low pressure drop and low hold up.
Q73.
If the path of liquid across the plate is very long as in case of large diameter tower, Murphree efficiency can be __________ percent.

a.

100

b.

> 100

c.

< 100

d.

none of these

Discuss
Answer: (b).> 100
Q74.
Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m² and the solvent flow, rate is 400 moles of S/m². hr. The equilibrium data is represented by Y = 3X² , where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is

a.

25%

b.

50%

c.

70%

d.

90%

Discuss
Answer: (b).50%
Q75.
Raoult's law is applicable to the

a.

ideal solutions

b.

real solutions

c.

mixture of water and alcohol

d.

non-ideal gases

Discuss
Answer: (a).ideal solutions
Q76.
Weeping in a distillation column

a.

increases tray efficiency.

b.

provides large interfacial surface for mass transfer.

c.

results due to very high gas velocity.

d.

results due to very low gas velocity.

Discuss
Answer: (d).results due to very low gas velocity.
Q77.
Agitator is provided in a crystalliser for

a.

avoiding deposition on cooler surfaces.

b.

formation of nuclei.

c.

crystal growth.

d.

all (a), (b) and (c).

Discuss
Answer: (d).all (a), (b) and (c).
Q78.
__________ diffusion is used for separating the isotopes of methane.

a.

Thermal

b.

Pressure

c.

Concentration

d.

Force

Discuss
Answer: (a).Thermal
Q79.
Ordinary diffusion process is also called __________ diffusion.

a.

pressure

b.

thermal

c.

concentration

d.

forced.

Discuss
Answer: (c).concentration
Q80.
Pick out the wrong statement.

a.

Different solids have different equilibrium moisture curves.

b.

Total condenser or reboiler is considered equivalent to one theoretical plate in McCabe-Thiele method of theoretical plate calculation for distillation column.

c.

Heat removal load on cooler remains constant, even with increase of the reflux ratio in a distillation column.

d.

Even a forced draft cooling tower can not cool water below the wet bulb temperature.

Discuss
Answer: (c).Heat removal load on cooler remains constant, even with increase of the reflux ratio in a distillation column.
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