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 44 of 67

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Q431.
For gas absorption, low viscosity solvents are preferred, because of their

a.

better flow characteristics.

b.

low pumping pressure drop.

c.

rapid absorption rates.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q432.
To remove all the moisture from a wet solid it requires exposure to __________ air.

a.

perfectly dry

b.

highly humid

c.

high temperature

d.

none of these

Discuss
Answer: (a).perfectly dry
Q433.
Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation ?

a.

Cost

b.

Availability

c.

Toxicity

d.

Selectivity

Discuss
Answer: (d).Selectivity
Q434.
As the reflux ratio increases, the slope of the operating line for rectifying section

a.

increases

b.

decreases

c.

remains constant

d.

data insufficient, cannot be predicted

Discuss
Answer: (a).increases
Q435.
Cox chart, which is useful in the design of distillation column particularly for petroleum hydrocarbons, is a plot of (where, P = vapor pressure, T = temperature)

a.

log P vs . T

b.

log P vs. log T

c.

T vs . P

d.

P vs . log T

Discuss
Answer: (a).log P vs . T
Q436.
The unit of volumetric diffusivity is

a.

cm²/sec

b.

cm/sec

c.

cm³/sec

d.

cm²/sec²

Discuss
Answer: (a).cm²/sec
Q437.
For a ternery mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a __________ of the equilateral triangular co-ordinates.

a.

binary mixture is represented by the apex

b.

binary mixture is represented by any point inside

c.

ternery mixture is represented by the sides

d.

pure component is represented by the apex.

Discuss
Answer: (d).pure component is represented by the apex.
Q438.
Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the __________ temperature.

a.

dry-bulb

b.

wet-bulb

c.

dew point

d.

adiabatic saturation

Discuss
Answer: (b).wet-bulb
Q439.
The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is

a.

100

b.

10

c.

5

d.

1

Discuss
Answer: (b).10
Q440.
The slope of 9-line is determined by the

a.

reflux ratio

b.

plate efficiency to be achieved

c.

thermal condition of the feed

d.

relative volatility.

Discuss
Answer: (c).thermal condition of the feed
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