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 23 of 67

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Q221.
For the same system, if the same liquid used in an absorber is decreased, the tower height will

a.

increase

b.

decrease

c.

remain unaffected

d.

decrease or increase ; depends on the type of liquid

Discuss
Answer: (a).increase
Q222.
Which of the following same diameter columns gives lowest pressure drop per unit height ?

a.

Bubble-cap column

b.

Sieve-plate column

c.

Packed column (stacked)

d.

Randomly packed column

Discuss
Answer: (c).Packed column (stacked)
Q223.
Diffusion in concentrated solutins differs from that in dilute solutions, because of the change in the __________ with the concentration of the solution.

a.

degree of ideality

b.

viscosity

c.

both 'a '& 'b'

d.

neither 'a' nor 'b'

Discuss
Answer: (c).both 'a '& 'b'
Q224.
Stage efficiency in a leaching process depends on the

a.

time of contact between the solid and the solution

b.

rate of diffusion of the solute through the solid and into the liquid

c.

both (a) and (b)

d.

vapour pressure of the solution

Discuss
Answer: (c).both (a) and (b)
Q225.
Operating velocity in a packed tower is usually __________ the flooding velocity.

a.

half

b.

twice

c.

equal to

d.

more than

Discuss
Answer: (a).half
Q226.
The Knudsen diffusivity is dependent on the

a.

molecular velocity only.

b.

pore radius of the catalyst only.

c.

molecular mean free path only.

d.

molecular velocity and por radius of the catalyst.

Discuss
Answer: (d).molecular velocity and por radius of the catalyst.
Q227.
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when

a.

extracting solvent is cheaply & abundantly available.

b.

one of the liquid components is heat sensitive.

c.

viscosity of liquid components is very high.

d.

one of the liquid components has very high affinity towards the solvent.

Discuss
Answer: (d).one of the liquid components has very high affinity towards the solvent.
Q228.
Inside the distillation column, the

a.

driving force for the vapour flow is the pressure drop.

b.

liquids are not always at their bubble points.

c.

pressure increases gradually from bottom to the top of the column.

d.

none of these

Discuss
Answer: (a).driving force for the vapour flow is the pressure drop.
Q229.
Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in

a.

viscosity with concentration.

b.

degree of ideality of the solution.

c.

both (a) and (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) and (b).
Q230.
Occurrence of 'case hardening' during drying of a high moisture solid cake __________ the drying rate.

a.

increases

b.

decreases

c.

does not affect

d.

exponentially increases

Discuss
Answer: (b).decreases
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