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 64 of 67

Discover more Topics under Basic Chemical Engineering

Q631.
In stripping section of continuous distillation column, the

a.

liquid is stripped of high boiler.

b.

liquid is enriched with high boiler.

c.

vapour is stripped of low boiler.

d.

none of these.

Discuss
Answer: (b).liquid is enriched with high boiler.
Q632.
In extraction, as the temperature increases, the area of hetrogeneity (area covered by binodal curve)

a.

decreases

b.

increases

c.

remains unchanged

d.

none of these

Discuss
Answer: (a).decreases
Q633.
Pick out the wrong statement.

a.

The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are the same for NSc = NPr = 1.

b.

1 Nm³ of dry air is lighter than 1Nm³ of humid air.

c.

The Lewis number of a mixture is unity, when the thermal diffusivity is equal to the mass diffusivity.

d.

An azeotropic mixture of two liquids has boiling point higher than either of them, when it shows negative deviation from Raoult's Law.

Discuss
Answer: (b).1 Nm³ of dry air is lighter than 1Nm³ of humid air.
Q634.
In case of an unsaturated mixture of gas and vapor, the percentage saturation is __________ its relative saturation.

a.

lower than

b.

higher than

c.

equal to

d.

either (a) or (b), depends on the mixture composition

Discuss
Answer: (a).lower than
Q635.
At constant pressure, with increase of temperature, the dew point will

a.

increase

b.

decrease

c.

remain unchanged

d.

increase/decrease ; depends on the temperature

Discuss
Answer: (a).increase
Q636.
For a single component absorber, the operating line is straight only when plotted in term of __________ units.

a.

partial pressure

b.

mole ratio

c.

mole fraction

d.

none of these

Discuss
Answer: (b).mole ratio
Q637.
Raschig ring made of procelain cannot be used for treating concentrated

a.

hydrochloric acid

b.

nitric acid

c.

alkalis

d.

sulphuric acid

Discuss
Answer: (c).alkalis
Q638.
H₂S present in naphtha reformed gas is removed by absorbing with

a.

ethanolamine

b.

K₂CO₃

c.

HCl

d.

vacuum gas oil

Discuss
Answer: (a).ethanolamine
Q639.
During constant rate drying period, vaporisation rate per unit drying surface area

a.

decreases with time.

b.

increases with time.

c.

does not change with time,

d.

does not affect the moisture content of the wet solid.

Discuss
Answer: (c).does not change with time,
Q640.
Pick out the wrong statement.

a.

Mass transfer co-efficient does not account for gase-liquid diffusion.

b.

Diffusion co-efficient and mass transfer co-efficient are not same in any mass transfer operation.

c.

Contacting cold vapor-gas mixture with hot liquid exemplifies humidification process.

d.

Contacting cold liquid with warm vapor-gas mixture exemplifies dehumidification process.

Discuss
Answer: (a).Mass transfer co-efficient does not account for gase-liquid diffusion.
Page 64 of 67