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 35 of 67

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Q341.
Paper industry employs __________ driers.

a.

cylinder

b.

rotary

c.

spray

d.

fluidised bed

Discuss
Answer: (a).cylinder
Q342.
Which of the following has the same dimension as mass diffusivity ?

a.

Momentum flux

b.

Kinematic viscosity

c.

Thermal diffusivity

d.

Both (b) and (c)

Discuss
Answer: (d).Both (b) and (c)
Q343.
Pick out the wrong statement pertaining to the cooling towers.

a.

In case of induced draft cooling tower, the fan is placed at the top of the tower.

b.

Effectiveness of forced draft cooling tower is reduced by the recirculation of the humid and hot discharged air.

c.

A natural draft cooling tower is recommended to be used, when the air humidity is low and air temperature is also low.

d.

Effectiveness of a mechanical draft cooling tower is reduced with increase in air wet-bulb temperature.

Discuss
Answer: (d).Effectiveness of a mechanical draft cooling tower is reduced with increase in air wet-bulb temperature.
Q344.
Perforated plate towers are unique for solvent extraction because, they provide

a.

higher contact area.

b.

better contact of the phase.

c.

repeated coalescence & redispersion of the drop phase.

d.

none of these.

Discuss
Answer: (c).repeated coalescence & redispersion of the drop phase.
Q345.
In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.

a.

interface

b.

gas phase

c.

liquid phase

d.

all 'a', 'b' & 'c'

Discuss
Answer: (a).interface
Q346.
Pick out the wrong statement pertaining to the analogy between equations of heat and mass transfer operations.

a.

Sherwood number in mass transfer is analogous to Nusselt number in heat transfer.

b.

Prandtl number in heat transfer is analogous to Schmidt number in mass transfer.

c.

Reynolds number in mass transfer is analogous to Grashoff number in heat transfer.

d.

Reynolds number remains the same in both heat and mass transfer.

Discuss
Answer: (c).Reynolds number in mass transfer is analogous to Grashoff number in heat transfer.
Q347.
The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is

a.

0

b.

∞

c.

-ve

d.

+ve

Discuss
Answer: (c).-ve
Q348.
The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?

a.

liquid side

b.

gas side

c.

interfacial

d.

both liquid and gas side

Discuss
Answer: (b).gas side
Q349.
Measurement of the interfacial area of mass transfer is achieved easily & accurately in case of a __________ coloumn.

a.

spray

b.

packed

c.

bubble cap plate

d.

wetted wall

Discuss
Answer: (d).wetted wall
Q350.
With the lowering of equiliDrium pressure, at a given temperature, the amount of ad-sorbate on the adsorbent

a.

increases.

b.

decreases.

c.

remains same.

d.

either (a) or (b), depends on the system.

Discuss
Answer: (b).decreases.
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