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 28 of 67

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Q271.
Advantage of continuous drying over batch drying is that the

a.

drying cost per unit weight of dried product is less.

b.

product with more uniform moisture content is produced.

c.

equipment size required is smaller.

d.

all 'a', 'b' & 'c'

Discuss
Answer: (d).all 'a', 'b' & 'c'
Q272.
With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)

a.

increases

b.

decreases

c.

remains unaffected

d.

increases Linearly

Discuss
Answer: (a).increases
Q273.
In a packed bed absorption column, the channelling will be noted by the

a.

increase in flow rate.

b.

sharp drop in pressure drop.

c.

sharp rise in pressure drop.

d.

none of these.

Discuss
Answer: (b).sharp drop in pressure drop.
Q274.
Gaseous diffusivity at atmospheric pressure is of the order of __________ cm²/second.

a.

1

b.

1 to 5

c.

5 to 10

d.

> 10

Discuss
Answer: (a).1
Q275.
In liquid-liquid extraction, the number of phases at plait point is

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (a).1
Q276.
In a liquid-liquid extraction, 10 kg of a solution containing 2 kg of solute C and 8 kg of solvent A is brought into contact with 10 kg of solvent B. Solvent A and B are completely immiscible in each other whereas solute C is soluble in both the solvents. The extraction process attains equilibrium. The equilibrium relationship between the two phases is Y* = 0.9X, where Y* is the kg of C/kg of B and X is kg of C/kg of A. Choose the correct answer.

a.

The entire amount of C is transferred to solvent B.

b.

Less than 2 kg but more than 1 kg of C is transferred to solvent B.

c.

Less than 1 kg of C is transferred to B.

d.

No amount of C is tranferred to B.

Discuss
Answer: (a).The entire amount of C is transferred to solvent B.
Q277.
Mass transfer co-efficient is directly proportional to Dแด€ส™^0.5, according to __________ theory.

a.

penetration

b.

surface renewal

c.

film

d.

none of these

Discuss
Answer: (a).penetration
Q278.
Sand is dried in foundaries in a___drier.

a.

rotary

b.

fluidisedbed

c.

vacuum

d.

spray

Discuss
Answer: (b).fluidisedbed
Q279.
Which of the following employs an accessory known as 'drift eliminator' ?

a.

Multiple effect evaporator.

b.

Mechanical draft cooling tower.

c.

Rotary dryer.

d.

Rotating disc contactor.

Discuss
Answer: (b).Mechanical draft cooling tower.
Q280.
Pick out the correct statement.

a.

Higher hold up of the solid in the rotary dryer results in better exposure of the solids to the gas.

b.

The 'Hatta number' is important in problems involving gas absorption without chemical reaction.

c.

For a non-reacting binary mixture of ideal gases, the partial pressure distribution of both components is linear in the case of steady state equimolal counter-diffusion.

d.

Total reflux in case of distillation operation requires infinite number of plates for a binary system separation.

Discuss
Answer: (c).For a non-reacting binary mixture of ideal gases, the partial pressure distribution of both components is linear in the case of steady state equimolal counter-diffusion.
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