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 46 of 67

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Q451.
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
Q452.
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
Q453.
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
Q454.
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)
Q455.
Which of the following processes is not an example of adsorption applied to gaseous separations ?

a.

Recovery of valuable solvent vapors from dilute mixture with air and other gases.

b.

Dehumidification of air and gas.

c.

Removal of objectionable odour and impurities from industrial gases.

d.

Decolouration of yellow glycerene.

Discuss
Answer: (d).Decolouration of yellow glycerene.
Q456.
The critical moisture content in case of drying indicates the __________ rate period.

a.

beginning of falling

b.

beginning of constant

c.

end of falling

d.

none of these

Discuss
Answer: (a).beginning of falling
Q457.
Pick out the wrong statement

a.

A horizontal line on the humidity chart indicates the temperature changes at constant molal humidity.

b.

When water is cooled from 80 to 70°C by exposure to the air with a wet bulb temperature of 60°C, then both the approach & the range would be 10°C.

c.

For unsaturated air-water vapor mixture at atmospheric conditions, the wet bulb temperature & adiabatic cooling lines are the same.

d.

Relative saturation of unsaturated mixture of water vapor & air can not be increased by either reducing the mixture temperature or by increasing the total pressure.

Discuss
Answer: (d).Relative saturation of unsaturated mixture of water vapor & air can not be increased by either reducing the mixture temperature or by increasing the total pressure.
Q458.
Out of two equilibrium curves, first one lies above the diagonal and the second lies below the diagonal in the x-y plot. It means that separation by distillation is

a.

not possible in the second case unless vacuum is applied.

b.

not possible in the second case unless high pressure is applied.

c.

more readily done in the second case compared to first one.

d.

none of these

Discuss
Answer: (c).more readily done in the second case compared to first one.
Q459.
'ADDUCTS' and 'CLATHRATES' are used in case of

a.

extractive distillation.

b.

crystallisation.

c.

absorption.

d.

none of these.

Discuss
Answer: (b).crystallisation.
Q460.
Adsorption is an unit operation which generally involves __________ systems.

a.

liquid-solid

b.

gas-solid

c.

fluid-solid

d.

solid-solid

Discuss
Answer: (c).fluid-solid
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