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 29 of 67

Discover more Topics under Basic Chemical Engineering

Q281.
Pick out the wrong statement.

a.

Constant pressure distillation can not separate an azeotropic mixture.

b.

Relative volatility of a binary mixture changes appreciably with the minor change in temperature.

c.

The relative volatility of a binary mixture at azeotropic composition is unity.

d.

Flash distillation is practised on wide spread scale in petroleum refinery.

Discuss
Answer: (b).Relative volatility of a binary mixture changes appreciably with the minor change in temperature.
Q282.
If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm.

a.

1.2 to 1.5

b.

2.5 to 3

c.

3 to 4

d.

5

Discuss
Answer: (a).1.2 to 1.5
Q283.
During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant.

a.

wet bulb temperature

b.

partial pressure of water vapor

c.

relative humidity

d.

none of these

Discuss
Answer: (a).wet bulb temperature
Q284.
In case of absorption, both the operating and equilibrium lines will be straight for

a.

isothermal operation.

b.

dilute solutions.

c.

dilute solutions and isothermal operation.

d.

none of these.

Discuss
Answer: (c).dilute solutions and isothermal operation.
Q285.
Mass transfer co-efficient varies as Dแด€ส™^0.5, according to the __________ theory.

a.

film

b.

surface renewal

c.

penetration

d.

none of these

Discuss
Answer: (b).surface renewal
Q286.
For an absorber, both equilibrium and operating line will be straight for

a.

concentrated solution and non-isothermal operation.

b.

dilute solution and non-isothermal operation.

c.

dilute solution and isothermal operation.

d.

concentrated solution and isothermal operation.

Discuss
Answer: (c).dilute solution and isothermal operation.
Q287.
Unsaturated air (with dry bulb and wet bulb temperatures being 45°C and 25°C respectively) is passed through a water spray chamber maintained at 23°C. The air will be cooled and

a.

humidified with wet bulb temperature decreasing.

b.

humidified at constant wet bulb temperature.

c.

dehumidified.

d.

none of these

Discuss
Answer: (a).humidified with wet bulb temperature decreasing.
Q288.
Humid volume, at a given temperature is a/an __________ function of humidity.

a.

inverse

b.

exponential

c.

linear

d.

logarithmic

Discuss
Answer: (c).linear
Q289.
The Schmidt number which is defined as, ฮผ/ฯ D, is the ratio of the

a.

momentum diffusivity to the mass dif-fusivity.

b.

thermal diffusivity to the mass diffusivity.

c.

momentum diffusivity to the thermal diffusivity.

d.

none of these.

Discuss
Answer: (a).momentum diffusivity to the mass dif-fusivity.
Q290.
If f is defined as above, then which of the following applies to a feed at dew point ?

a.

f = 1

b.

f < 1

c.

f > 1

d.

0 < f < 1

Discuss
Answer: (a).f = 1
Page 29 of 67