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 38 of 67

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Q371.
A solid material shows case hardening properties while drying. Which of the following should be controlled to control the drying process ?

a.

Flow rate of inlet air

b.

Relative humidity of outlet air

c.

Humidity of inlet air

d.

Temperature of the solid

Discuss
Answer: (d).Temperature of the solid
Q372.
In case of liquid-liquid binary diffusion, diffusivity of one constituent into another is not dependent on the

a.

temperature and pressure

b.

concentration

c.

nature of the constituents

d.

none of these

Discuss
Answer: (d).none of these
Q373.
For continuous drying of grannular or crystalline material, the dryer used is the __________ dryer.

a.

tunnel

b.

tray

c.

rotary

d.

none of these

Discuss
Answer: (c).rotary
Q374.
When adsorption hysteresis is observed, the desorption equilibrium pressure is __________ that obtained by adsorption.

a.

always lower than

b.

always higher than

c.

same as

d.

dependent on the system; can be either lower or higher than

Discuss
Answer: (a).always lower than
Q375.
Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the __________ moisture.

a.

bound

b.

unbound

c.

critical

d.

none of these

Discuss
Answer: (a).bound
Q376.
For a binary mixture with low relative volatility, continuous rectification to get pure products will require

a.

low reflux ratio

b.

less number of trays

c.

small cross-section column

d.

high reflux ratio

Discuss
Answer: (d).high reflux ratio
Q377.
The efficiency of a plate column will be maximum, when the flow is ideal __________ the plate.

a.

across

b.

above

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) & (b)
Q378.
The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the __________ temperature.

a.

dew point

b.

wet bulb

c.

dry bulb

d.

none of these

Discuss
Answer: (d).none of these
Q379.
Entrainer used in azeotropic distillation should

a.

form a low boiling azeotrope with one of the constituents of the mixture.

b.

form a new azeotrope of low relative volatility with one of the constituents of the mixture.

c.

have high latent heat of vaporisation.

d.

have high viscosity to provide high tray efficiency.

Discuss
Answer: (a).form a low boiling azeotrope with one of the constituents of the mixture.
Q380.
In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because

a.

temperature is less.

b.

total pressure is less.

c.

mixing of steam with the material being vaporised is not so intimate as to result in equilibrium condition.

d.

saturated steam is used for steam distillation.

Discuss
Answer: (c).mixing of steam with the material being vaporised is not so intimate as to result in equilibrium condition.
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