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 20 of 67

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Q191.
The value of Nแด€/(Nแด€ + Nส™) for steady state molecular diffusion of gas 'A' through non-diffusing gas 'B' is

a.

1

b.

โˆž

c.

0.5

d.

2

Discuss
Answer: (a).1
Q192.
The humid volume may be increased by increasing the

a.

temperature at constant humidity.

b.

humidity at constant temperature.

c.

both (a) and (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) and (b).
Q193.
Pick out the wrong statement

a.

Co-current absorbers are usually used, when the gas to be dissolved in the liquid is a pure substance.

b.

In case of gas absorption, HETP is equal to HTU, when both the operating line & the equilibrium lines are parallel.

c.

Hatta number is important in case of gas absorption with chemical reaction.

d.

In actual practice, absorption is an en-dothermic process, while stripping is an exothermic process.

Discuss
Answer: (d).In actual practice, absorption is an en-dothermic process, while stripping is an exothermic process.
Q194.
When the mixture to be distilled has a very high boiling point and the product material is heat sensitive, the separation technique to be used is __________ distillation.

a.

continuous

b.

steam

c.

azerotropic

d.

none of these

Discuss
Answer: (b).steam
Q195.
Leaching of uranium ore and gold ore is done in

a.

centrifugal extractor

b.

Pachuka tanks

c.

Bollman extractor

d.

none of these

Discuss
Answer: (b).Pachuka tanks
Q196.
Blowdown in a cooling tower

a.

means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities.

b.

increases the scale forming tendencies of water.

c.

is undesirable.

d.

all (a), (b) & (c).

Discuss
Answer: (a).means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities.
Q197.
During constant rate period, the rate of drying decreases with the

a.

decrease in air temperature

b.

increase in air humidity

c.

both (a) and (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) and (b)
Q198.
Antibiotics are best handled in a

a.

Podbielniak extractor.

b.

sieve tray contractor.

c.

rotating disc contactor.

d.

pulsed column extractor.

Discuss
Answer: (a).Podbielniak extractor.
Q199.
The fixed cost of a distillation column at minimum reflux ratio is

a.

minimum

b.

infinite

c.

optimum

d.

none of these

Discuss
Answer: (b).infinite
Q200.
To get high tray efficiency

a.

interfacial surface between liquid and gas phase should be large.

b.

time of contact between the two phases should be less.

c.

gas velocity should be very low.

d.

liquid entrainment should be severe.

Discuss
Answer: (a).interfacial surface between liquid and gas phase should be large.
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