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

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Q631.
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
Q632.
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
Q633.
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
Q634.
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
Q635.
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,
Q636.
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.
Q637.
In rectifying section of a continuous distillation column, the

a.

vapour is enriched with low boilers.

b.

vapour is enriched with high boilers.

c.

liquid is stripped of high boilers.

d.

none of these.

Discuss
Answer: (b).vapour is enriched with high boilers.
Q638.
For a distillation column operating at minimum reflux, the

a.

concentration of liquid and vapour leaving a plate will be same.

b.

reflux ratio will be maximum.

c.

number of plates required will be maximum.

d.

none of these.

Discuss
Answer: (c).number of plates required will be maximum.
Q639.
A solid is being dried in the linear drying rate regime from moisture content Xo to XF. The drying rate is zero at X = 0 and the critical moisture content is the same as the initial moisture Xo. The drying time for M = (Ls/ARc) is (where, L = total mass of dry solid, A = total surface area for drying Rc = Constant maximum drying rate per unit area X = moisture content (in mass of water/mass of dry solids))

a.

M(Xo - XF)

b.

M(Xo/XF)

c.

M ln(Xo/XF)

d.

MXo ln(Xo/XF)

Discuss
Answer: (d).MXo ln(Xo/XF)
Q640.
Flash distillation is suitable for the separation of components

a.

having very close boiling points.

b.

which form maximum boiling azeotrope.

c.

having very wide boiling points.

d.

which form minimum boiling azeotrope.

Discuss
Answer: (c).having very wide boiling points.
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