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 43 of 67

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Q421.
The wet and dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be __________ °C.

a.

25

b.

> 25

c.

< 25

d.

- 25

Discuss
Answer: (b).> 25
Q422.
Henry's law states that the

a.

partial pressure of a component over a solution is proportional to its mole fraction in the liquid.

b.

partial pressure of a component over a solution is proportional to the mole fraction in the vapour.

c.

vapour pressure is equal to the product of the mole fraction and total pressure.

d.

partial pressure is equal to the product of the mole fraction and total pressure.

Discuss
Answer: (a).partial pressure of a component over a solution is proportional to its mole fraction in the liquid.
Q423.
The relative volatility of a binary mixture at constant temperature __________ the total pressure.

a.

decreases with increase in

b.

increases with increase in

c.

is independent of

d.

none of these

Discuss
Answer: (a).decreases with increase in
Q424.
Tower diameter may be decreased by

a.

using higher reflux ratio.

b.

use of increased tray spacing.

c.

increasing the liquid flow rate.

d.

increasing the vapour flow rate.

Discuss
Answer: (b).use of increased tray spacing.
Q425.
Rayleigh's equation applies to __________ distillation.

a.

continuous

b.

steam

c.

differential

d.

flash

Discuss
Answer: (c).differential
Q426.
Steady state equimolal counter diffusion is encountered in

a.

separation of a binary mixture by distillation.

b.

absorption of NH₃ from air by water.

c.

all liquid-liquid diffusion systems.

d.

all liquid-solid diffusion systems.

Discuss
Answer: (a).separation of a binary mixture by distillation.
Q427.
Which of the following is considered equivalent to one theoretical stage in Mc-Cabe Thiele's method ?

a.

Partial condenser

b.

Total condenser

c.

Reboiler

d.

Both (b) and (c)

Discuss
Answer: (d).Both (b) and (c)
Q428.
Removal of __________ exemplifies an adsorption unit operation.

a.

uranium from its ore

b.

water from petrol

c.

ammonia from coke oven gas

d.

mustard oil from mustard seed

Discuss
Answer: (b).water from petrol
Q429.
Can the efficiency of a plate in the distillation tower be greater than 100% ?

a.

Yes

b.

Normally not; but is possible if infinite number of plates are put.

c.

Never

d.

Yes ; if the reflux ratio is maximum.

Discuss
Answer: (c).Never
Q430.
With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.

a.

increases

b.

decreases

c.

remains same

d.

increases linearly

Discuss
Answer: (a).increases
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