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 10 of 67

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Q91.
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.
Q92.
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
Q93.
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
Q94.
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
Q95.
Free flowing granular materials can be best dried in a __________ drier.

a.

rotary

b.

cylinder

c.

drun

d.

freeze

Discuss
Answer: (a).rotary
Q96.
In case of an ideal solution, the total vapor pressure varies __________ with the composition expressed as mole fraction,

a.

inversely

b.

linearly

c.

exponentially

d.

none of these

Discuss
Answer: (b).linearly
Q97.
Molarity is defined as the number of gm moles of solute per __________ of solvent.

a.

litre

b.

kg

c.

gm

d.

c.c

Discuss
Answer: (a).litre
Q98.
The value of Lewis number (Le = Sc/Pr) for air-water vapour system is around

a.

1

b.

0.24

c.

3.97

d.

600

Discuss
Answer: (a).1
Q99.
An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are being explored:

(i) a reboiler is used and
(ii) no reboiler is used but steam is fed directly to the bottom of the column.

As compared to option (i), in option (ii)

a.

less number of trays are required.

b.

composition of the residue remains unchanged.

c.

more number of trays are required but the residue composition remains unchanged.

d.

more number of trays are required and the residue composition is more dilute in methanol.

Discuss
Answer: (a).less number of trays are required.
Q100.
The partial pressure distribution of an ideal gas diffusing through another stagnant ideal gas at steady state follows a/an __________ law.

a.

exponential

b.

parabolic

c.

linear

d.

cubic

Discuss
Answer: (a).exponential
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