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 18 of 67

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Q171.
In case of constant underflow extraction operation, the __________ at all solute concentration.

a.

solids are drained to the same extent

b.

ratio of the insoluble to solution is constant

c.

both(a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both(a) & (b)
Q172.
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

a.

greater than

b.

smaller than

c.

equal to

d.

either (a), or (b) ; depends on the type of packing

Discuss
Answer: (b).smaller than
Q173.
The relation among various mass transfer co-efficients (M.T.C) for ideal gases is given by (where, Kc & Km are M.T.C. for equimolar counter diffusion with concentration & mole fraction respectively as the driving force. and, Kp = M.T.C. for diffusion of a gas through a stagnant inert gas with pressure as driving force.)

a.

Kc = Kp = Km

b.

Kc = Kp/RT = Km . RT/P

c.

Kc = Kp . RT = Km . RT/p

d.

none of these

Discuss
Answer: (c).Kc = Kp . RT = Km . RT/p
Q174.
With increase in temperature, the leaching rate increases because of the

a.

increased diffusivity.

b.

decreased viscosity of liquid.

c.

both (a) and (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) and (b).
Q175.
__________ extractor uses centrifugal force for separating the two phases.

a.

Treybal

b.

Schiebel

c.

Podbielniak

d.

None of these

Discuss
Answer: (c).Podbielniak
Q176.
In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of

a.

1.5

b.

-0.6

c.

-1.5

d.

0.6

Discuss
Answer: (c).-1.5
Q177.
Pick out the wrong statement.

a.

Mechanical agitation is required, if the system has low interfacial tension.

b.

Seive tray towers are generally used for systems having low interfacial tension.

c.

When Henry's law constant is very small, then the mass transfer rate is controlled by the gas film resistance.

d.

Taylor-Prandtl analogy for heat and mass transfer considers the transfer through both laminar and turbulent layers.

Discuss
Answer: (a).Mechanical agitation is required, if the system has low interfacial tension.
Q178.
Acetic acid will be most economically separated from a dilute solution of acetic acid in water by

a.

solvent extraction

b.

continuous distillation

c.

evaporation

d.

absorption

Discuss
Answer: (a).solvent extraction
Q179.
Design calculation for multiple component distillation is done by

a.

Ponchon-Savarit method

b.

Mccabe-Thiele method

c.

enthalpy concentration method

d.

tray to tray calculations.

Discuss
Answer: (d).tray to tray calculations.
Q180.
Large scale drying of wheat is done in a __________ dryer.

a.

fluidised bed

b.

spouted bed

c.

tray

d.

vacuum rotary

Discuss
Answer: (b).spouted bed
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