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 5 of 67

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Q41.
In case of an absorber, the operating

a.

line always lies above the equilibrium curve.

b.

line always lies below the equilibrium curve.

c.

line can be either above or below the equilibrium curve.

d.

velocity is more than the loading velocity.

Discuss
Answer: (a).line always lies above the equilibrium curve.
Q42.
Total reflux in a distillation operation requires minimum

a.

reboiler load

b.

number of plates

c.

condenser load

d.

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

Discuss
Answer: (b).number of plates
Q43.
The amount of steam required per unit quantity of distillate in case of steam distillation will be reduced by

a.

raising the temperature.

b.

lowering the total pressure.

c.

both (a) and (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) and (b).
Q44.
The difference of wet bulb temperature and adiabatic saturation temperature of unsaturated mixture of any system is

a.

+ve

b.

-ve

c.

zero

d.

none of these

Discuss
Answer: (a).+ve
Q45.
Fenske's equation for determining the minimum number of theoretical stages in distillation column holds good, when the

a.

relative volatility is reasonably constant.

b.

mixture (to be separated) shows negative deviation from ideality.

c.

mixture (to be separated) shows positive deviation from ideality.

d.

multicomponent distillation is involved.

Discuss
Answer: (a).relative volatility is reasonably constant.
Q46.
When the temperature and humidity of air is low, we usually use __________ draft cooling tower.

a.

natural

b.

forced

c.

induced

d.

none of these

Discuss
Answer: (a).natural
Q47.
Make up water is required in a cooling tower to replace the water lost by

a.

evaporation

b.

drift

c.

blowdown and leakage

d.

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

Discuss
Answer: (d).all (a), (b) and (c)
Q48.
Which of the following quantities need not be fixed before starting the design of a co-current absorber ?

a.

Heat gain or loss

b.

Flow rate of entering liquid

c.

Flow rate of gas

d.

None of these

Discuss
Answer: (b).Flow rate of entering liquid
Q49.
Mass transfer co-efficient of liquid is

a.

affected more by temperature than that for gases.

b.

affected much less by temperature than that for gases.

c.

not affected by the temperature.

d.

none of these.

Discuss
Answer: (a).affected more by temperature than that for gases.
Q50.
Absorption accompanied with chemical reaction is exemplified by the absorption of

a.

ammonia in water.

b.

benzol present in coke oven gas by wash oil.

c.

SO₂ in alkaline solution.

d.

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

Discuss
Answer: (c).SO₂ in alkaline solution.
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