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 34 of 67

Discover more Topics under Basic Chemical Engineering

Q331.
According to the Fenske equation, what will be the minimum number of plates required in a distillation column to separate an equimolar binary mixture of components A and B into an overhead fraction containing 99 mol% A and a bottom fraction containing 98 mol% B ? Assume that relative volatility (ฮฑแด€ส™ = 2) does not change appreciably in the coloumn.

a.

5

b.

9

c.

12

d.

28

Discuss
Answer: (c).12
Q332.
Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in

a.

decreased solute solubility.

b.

large minimum liquid to gas (L/G) ratio.

c.

large number of trays.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q333.
With increase in temperature, the mutual solubility of two liquids

a.

increases

b.

decreases

c.

remains unchanged

d.

decreases exponentially

Discuss
Answer: (a).increases
Q334.
Pick out the wrong statement.

a.

In solvent extraction, the distribution co-efficient should be as large as possible for solvent economy.

b.

With increase in pressure, the solubility of gases in solvent increases at a fixed temperature.

c.

Decrease in Murphree plate efficiency is an indication of entrainment in distillation coloumn.

d.

The capacity of a distillation coloumn is maximum at total reflux.

Discuss
Answer: (d).The capacity of a distillation coloumn is maximum at total reflux.
Q335.
The relative volatility of a binary mixture at the azeotropic composition is

a.

1

b.

> 1

c.

0

d.

โˆž

Discuss
Answer: (a).1
Q336.
Relative volatility varies with the concentration of component for an ideal solution. The relative volatity of a binary mixture may be defined as the ratio of vapor pressure of component 'A' to that of component 'B', when

a.

only vapor phase follows Raoult's law.

b.

only liquid phase obeys Dalton's law.

c.

liquid phase obeys Dalton's law and vapor phase obeys Raoult's law.

d.

Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law.

Discuss
Answer: (d).Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law.
Q337.
Bound moisture is that liquid which exerts an equilibrium vapor pressure __________ that of the pure liquid at the given temperature.

a.

less than

b.

more than

c.

equal to

d.

either (a) or (b); depends on the solid

Discuss
Answer: (a).less than
Q338.
Lewis number (Le) is

a.

Sc x Pr

b.

Pr x St

c.

Sh x Pr

d.

St x Sh

Discuss
Answer: (a).Sc x Pr
Q339.
Pick out the wrong statement:

a.

Absorption factor is constant, when the equilibrium and operating lines are straight.

b.

In case of a stripper, the equilibrium curve is always below the operating line.

c.

In case of an absorber, the operating line is always above the equilibrium curve.

d.

In the absorption of low solubility gases, the liquid film is the controlling resistance.

Discuss
Answer: (b).In case of a stripper, the equilibrium curve is always below the operating line.
Q340.
In liquid extraction, if the selectivity is unity, then

a.

separation of the constituents is the most effective.

b.

no separation will occur.

c.

amount of solvent required will be minimum.

d.

solvent flow rate should be very low.

Discuss
Answer: (b).no separation will occur.
Page 34 of 67