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 9 of 67

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Q81.
With increase in temperature, the solubility of gases in liquids, at fixed pressure

a.

increases

b.

decreases

c.

remains same

d.

either (a) or (b), depends on the system

Discuss
Answer: (b).decreases
Q82.
In most of the vacuum crystalliser, vacuum is generally produced by means of a

a.

suction pump

b.

compressed air jet

c.

steam jet ejector with a barometric condenser

d.

none of these

Discuss
Answer: (c).steam jet ejector with a barometric condenser
Q83.
In case of binary distillation, increasing the reflux ratio above optimum does not result in the increase of

a.

area between operating line and 45° diagonal x-y diagram.

b.

condenser and reboiler surfaces.

c.

tower cross-section.

d.

none of these.

Discuss
Answer: (a).area between operating line and 45° diagonal x-y diagram.
Q84.
Wetted wall tower experiment determines the

a.

molal diffusivity.

b.

volumetric co-efficient.

c.

mass transfer co-efficient.

d.

none of these.

Discuss
Answer: (c).mass transfer co-efficient.
Q85.
In McCabe-Thiele method, at infinite reflux ratio

a.

the overhead product is minimum.

b.

both the operating lines coincide with diagonal.

c.

both (a) and (b).

d.

neither (a) nor (b).

Discuss
Answer: (a).the overhead product is minimum.
Q86.
With decrease in the throughput (compared with the design capacity) for a bubble cap distillation column, its efficiency

a.

increases

b.

decreases

c.

remains same

d.

may increase or decrease ; depends on individual design

Discuss
Answer: (a).increases
Q87.
Plate towers are preferred to packed towers, when large temperature changes are involved, because of the reason that the

a.

packing may be crushed due to thermal expansion/contraction of the components of the equipments.

b.

pressure drop in the equipment will be very high.

c.

viscosity variation of the fluids may cause channeling/flooding.

d.

none of these.

Discuss
Answer: (a).packing may be crushed due to thermal expansion/contraction of the components of the equipments.
Q88.
The equilibrium liquid composition compared to the vapor composition in case of azeotropic mixture is

a.

more

b.

less

c.

same

d.

either more or less; depends on the system

Discuss
Answer: (c).same
Q89.
Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower.

a.

wetted wall

b.

bubble cap

c.

perforated tray

d.

packed

Discuss
Answer: (a).wetted wall
Q90.
Pick out the system with minimum boiling azeotrope at 1 atm.

a.

benzene-toluene

b.

ethyl alcohol-water

c.

hydrochloric acid-water

d.

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

Discuss
Answer: (b).ethyl alcohol-water
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