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 14 of 67

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Q131.
At equilibrium the concentration of water in vapour phase (C*)in kg/m³ of air space and the amount of water (m) adsorbed per kg of dry silica gel are related by, C* = 0.0667m. To maintain dry conditions in a room of air space 100m³ containing 2.2 kg of water vapour initially, 10 kg of dry silica gel is kept in the room. The fraction of initial water remaining in the air space after a long time (during which the temperature is maintained constant) is

a.

0.0

b.

0.2

c.

0.4

d.

1.0

Discuss
Answer: (c).0.4
Q132.
Dry bulb temperature of unsaturated air is more than its __________ temperature.

a.

dew point

b.

wet bulb

c.

both 'a' & 'b'

d.

neither 'a' nor 'b'

Discuss
Answer: (c).both 'a' & 'b'
Q133.
For the case of flow of air past a wet bulb thermometer (air water vapour system), the approximate value of H₂/ky.Cz is around

a.

0.60

b.

0.24

c.

1

d.

0.72

Discuss
Answer: (c).1
Q134.
The reciprocal of stripping factor is termed as

a.

selectivity index

b.

relative volatility

c.

absorption factor

d.

Murphree efficiency

Discuss
Answer: (c).absorption factor
Q135.
Ponchan-Savarit method analyses the fractional equipment based on

a.

enthalpy balance only.

b.

material balance only.

c.

both enthalpy and material balances.

d.

the assumption of constant molaloverflow.

Discuss
Answer: (c).both enthalpy and material balances.
Q136.
As complete saturation of an adsorbent is approached, the differential heat of adsrop-tion approaches

a.

that of normal condensation.

b.

integral heat of adsorption.

c.

zero.

d.

none of these.

Discuss
Answer: (a).that of normal condensation.
Q137.
'Absorption with chemical reaction' is involved in the removal of

a.

carbon dioxide from gaseous stream using alkaline solution.

b.

benzol from coke oven gas using solar oil/wash oil.

c.

ammonia from coke oven gas using refrigerated water.

d.

tar from coke oven gas in primary gas coolers using chilled water.

Discuss
Answer: (a).carbon dioxide from gaseous stream using alkaline solution.
Q138.
The-relative volatility for separation of a non-ideal binary mixture by distillation should be

a.

0

b.

1

c.

> 1

d.

< 1

Discuss
Answer: (c).> 1
Q139.
Pick out the wrong statement:

a.

Reboiler is not used in open steam distillation.

b.

The separation of solutes of different molecular sizes in a liquid solution by use of a suitable membrane is called dialysis.

c.

Freeze drying is used for the drying of fish.

d.

Fenske-Underwood equation is used for calculating theoretical number of plates in a distillation column at normal operating reflux condition.

Discuss
Answer: (d).Fenske-Underwood equation is used for calculating theoretical number of plates in a distillation column at normal operating reflux condition.
Q140.
In paper industry, paper is dried in a __________ dryer.

a.

tunnel

b.

heated cylinder

c.

conveyor

d.

festoon

Discuss
Answer: (b).heated cylinder
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