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 45 of 67

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Q441.
Mechanism of moisture removal in case of freeze drying of food stuff is by

a.

evaporation

b.

sublimation

c.

dehydration

d.

adsorption

Discuss
Answer: (b).sublimation
Q442.
The dew point of an unsaturated gas-vapor mixture does not depend upon the __________ of the mixture.

a.

composition

b.

temperature

c.

total pressure

d.

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

Discuss
Answer: (b).temperature
Q443.
Which is not concerned directly with mass transfer ?

a.

Schmidt number

b.

Sherwood number

c.

Lewis relationship

d.

Froude number

Discuss
Answer: (d).Froude number
Q444.
In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the __________ number.

a.

Lewis

b.

Grashoff

c.

Sherwood

d.

none of these

Discuss
Answer: (a).Lewis
Q445.
Which one of the following devices is not used for both the absorption as well as the liquid-liquid extraction processes ?

a.

Packed towers

b.

Plate towers

c.

Spray towers

d.

Wetted wall columns

Discuss
Answer: (d).Wetted wall columns
Q446.
The temperature of water cooled in cooling tower is always __________ temperature of entering air.

a.

more than the wet bulb

b.

less than the wet bulb

c.

equal to the wet bulb

d.

equal to the dry bulb

Discuss
Answer: (a).more than the wet bulb
Q447.
Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C?

a.

Humidification only

b.

Heating only

c.

Both heating and humidification

d.

Evaporative cooling

Discuss
Answer: (c).Both heating and humidification
Q448.
Mass transfer co-efficient is directly proportional to Dแด€ส™ according to the __________ theory.

a.

film

b.

penetration

c.

surface-renewal

d.

none of these

Discuss
Answer: (a).film
Q449.
Ammonia present in the coke oven gas is removed by washing with

a.

caustic solution

b.

dilute ammoniacal liquor

c.

dilute HCl

d.

ethanolamine

Discuss
Answer: (b).dilute ammoniacal liquor
Q450.
With increase in temperature, the leaching rate increases due to

a.

decreased liquid viscosity

b.

increased diffusivity

c.

both (a) and (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) and (b)
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