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 55 of 67

Discover more Topics under Basic Chemical Engineering

Q541.
Pick out the wrong statement.

a.

When the concentration difference for the mass transfer becomes zero at the bottom of the gas absorption tower, then the upper end of the operating line touches the equilibrium curve.

b.

The average distance between the operating line and equilibrium line is large, when the liquid-gas ratio is also large in case of a counter current gas absorption tower.

c.

The operating line lies above the equilibrium curve in case of a gas desorber.

d.

With decrease in the liquid flow rate for a fixed gas flow rate, the slope of the operating line decreases, in case of gas absorption process.

Discuss
Answer: (c).The operating line lies above the equilibrium curve in case of a gas desorber.
Q542.
A mixture of 10% C₆H₆ vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C.

a.

21.7

b.

20

c.

27.3

d.

18.7

Discuss
Answer: (d).18.7
Q543.
Which of the following is not fixed by the process requirements, in the design of absorbers ?

a.

Flow rate of the entering gas.

b.

Composition of the entering liquid.

c.

Terminal concentrations of gas stream.

d.

None of these.

Discuss
Answer: (d).None of these.
Q544.
If the amount of the steam used in steam distillation is increased, the temperature of distillation

a.

increases

b.

decreases

c.

remains unchanged

d.

depends on relative volatility

Discuss
Answer: (b).decreases
Q545.
The Hatta number is important in

a.

multicomponent distillation.

b.

binary distillation.

c.

gas absorption without chemical reaction.

d.

gas absorption with chemical reaction.

Discuss
Answer: (d).gas absorption with chemical reaction.
Q546.
When a multistage tray tower uses a minimum reflux ratio, it implies

a.

infinite trays and maximum reboiler heat load.

b.

infinite trays and minimum reboiler heat load.

c.

minimum trays and minimum reboiler heat load.

d.

minimum trays and maximum reboiler heat load

Discuss
Answer: (a).infinite trays and maximum reboiler heat load.
Q547.
CO₂ can be absorbed by

a.

hot cupric oxide

b.

heated charcoal

c.

cold Ca(OH)₂

d.

alumina

Discuss
Answer: (b).heated charcoal
Q548.
For the same process conditions, the reflux ratio of an unlagged distillation column

a.

decreases in winter

b.

increases in winter

c.

increases in summer

d.

none of these

Discuss
Answer: (b).increases in winter
Q549.
An ideal tower packing should not

a.

have low weight per unit volume.

b.

have large surface area per unit volume.

c.

have large free cross-section.

d.

hold up large amount of liquid in the packing.

Discuss
Answer: (d).hold up large amount of liquid in the packing.
Q550.
For __________ drying, the effects of velocity, temperature and humidity of the gas and the thickness of the solid are the same.

a.

unsaturated surface

b.

constant rate

c.

both (a) and (b)

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) and (b)
Page 55 of 67