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 21 of 67

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Q201.
Water entrained by circulating air in cooling towers is termed as

a.

drift

b.

blow down

c.

vapor load

d.

none of these.

Discuss
Answer: (a).drift
Q202.
A 25 cm x 25 cm x 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m x 1m x 1cm flat sheet of the same material is to be dried from one side only.Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is

a.

1000

b.

1500

c.

2000

d.

2500

Discuss
Answer: (a).1000
Q203.
With increase in temperature, the rate of leaching increases, because the

a.

diffusivity of solute increases.

b.

viscosity of solvent decreases.

c.

thermal conductivity of solute increases.

d.

none of these.

Discuss
Answer: (a).diffusivity of solute increases.
Q204.
Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of __________ humidity.

a.

molal

b.

relative

c.

percentage

d.

none of these

Discuss
Answer: (a).molal
Q205.
The apex of an equilateral-triangular coordinate (in ternary liquid system) represents a/an

a.

pure component

b.

binary mixture

c.

ternary mixture

d.

insoluble binary system

Discuss
Answer: (a).pure component
Q206.
A slurry is to be dried to produce flaky solid. Which dryer would you recommend ?

a.

Spray dryer

b.

Drum dryer

c.

Rotary dryer

d.

Dielectric dryer

Discuss
Answer: (a).Spray dryer
Q207.
Which of the following psychrometric processes is followed by water vapour laden unsaturated air, when it is passed through solid or liquid adsorbent ?

a.

Cooling and dehumidification.

b.

Heating and dehumidification at almost constant wet bulb temperature.

c.

Dehumidification with dry bulb temperature remaining constant.

d.

None of these.

Discuss
Answer: (b).Heating and dehumidification at almost constant wet bulb temperature.
Q208.
Boiling point diagram is

a.

not affected by pressure.

b.

affected by pressure.

c.

a plot of temperature vs. liquid composition.

d.

a plot of temperature vs. vapour composition.

Discuss
Answer: (b).affected by pressure.
Q209.
When acetone is added in a two layer mixture of methyl isobutyl ketone and water at 30°C, the acetone distributes between the two layers and the composition of the layer follows two solubility curves. For this system,

a.

as the acetone concentration increases, the solubility curves approach each other.

b.

both the phases become identical at a particular common point on both the solubility curves called the plait point.

c.

the distribution curve which is a plot between x (acetone concentration in one phase) and y (acetone concentration in other phase) is analogous to x-y curve used in distillation and absorption terminates on the x = y diagonal at the concentration of the plait point.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q210.
Steam distillation is used to

a.

reduce the number of plates.

b.

avoid thermal decomposition of a component.

c.

increase the efficiency of separation.

d.

increase the total pressure of distillation.

Discuss
Answer: (b).avoid thermal decomposition of a component.
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