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 47 of 67

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Q461.
With lapse of time, the overhead composition of light component in case of batch distillation with constant reflux

a.

increases

b.

decreases

c.

remains same

d.

may increase or decrease ; depends on system.

Discuss
Answer: (b).decreases
Q462.
Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of

a.

mass diffusivity to momentum diffusivity.

b.

thermal diffusivity to mass diffusivity.

c.

momentum diffusivity to thermal diffusivity.

d.

none of these.

Discuss
Answer: (b).thermal diffusivity to mass diffusivity.
Q463.
According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity)

a.

D

b.

D²

c.

D^0.5

d.

1/D

Discuss
Answer: (a).D
Q464.
Which of the following assumes constant molal vaporisation and overflow ?

a.

McCabe-Thiele method

b.

Ponchan-Savarit method

c.

Enthalpy concentration method

d.

Plate absorption column

Discuss
Answer: (a).McCabe-Thiele method
Q465.
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

a.

1

b.

> 1

c.

< 1

d.

≤ 1

Discuss
Answer: (b).> 1
Q466.
Selectivity of the solvent used in solvent extraction should be

a.

1

b.

> 1

c.

< 1

d.

0

Discuss
Answer: (b).> 1
Q467.
Pick out the wrong statement pertaining to leaching.

a.

Fine solids can not be leached in a Pachuka tank.

b.

Door classifier can be used for leaching of coarse solids.

c.

Vegetable seeds can be leached in either of Bollman extractor, Rotocel or Kennedy extractor.

d.

Very high temperature is not needed for the leaching of sugar beet.

Discuss
Answer: (a).Fine solids can not be leached in a Pachuka tank.
Q468.
Wet bulb and dry bulb temperatures becomes identical at __________ percent saturation curve.

a.

100

b.

50

c.

78

d.

none of these

Discuss
Answer: (a).100
Q469.
Can a cooling tower cool water below the wet bulb temperature of inlet air ?

a.

yes

b.

no

c.

yes ; but height of cooling tower will be prohibitively high.

d.

yes ; but the air flow rate should be excessively high.

Discuss
Answer: (b).no
Q470.
The solvent used in liquid-liquid extraction should have __________ less than one.

a.

selectivity

b.

distribution co-efficient

c.

both (a) and (b)

d.

neither (a) nor (b).

Discuss
Answer: (d).neither (a) nor (b).
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