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 19 of 67

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Q181.
Pressure drop through plate tower as compared to that through packed tower, for the same duty will be

a.

less

b.

more

c.

equal

d.

either (a) or (b); depends on the packing height

Discuss
Answer: (b).more
Q182.
Dimension of mass diffusivity is the same as that of

a.

kinematic viscosity

b.

dynamic viscosity

c.

surface tension

d.

pressure

Discuss
Answer: (a).kinematic viscosity
Q183.
Dorr thickener is an equipment used for

a.

classification

b.

sedimentation

c.

clarification

d.

leaching

Discuss
Answer: (b).sedimentation
Q184.
Steam distillation is used to separate

a.

azeotropes.

b.

high boiling substances from nonvolatile impurities.

c.

heat sensitive materials.

d.

mixtures of low relative volatility.

Discuss
Answer: (b).high boiling substances from nonvolatile impurities.
Q185.
In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

a.

q > 1

b.

q < 1

c.

q = 1

d.

q = 0

Discuss
Answer: (c).q = 1
Q186.
The cooling effect in a cooling tower can not be increased by

a.

increasing the air velocity over the wet surfaces.

b.

reducing the humidity of entering air.

c.

lowering the barometric pressure.

d.

none of these.

Discuss
Answer: (d).none of these.
Q187.
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
Q188.
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).
Q189.
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.
Q190.
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
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