Chemical Engineering Thermodynamics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Chemical Engineering Thermodynamics, 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 Chemical Engineering Thermodynamics 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 Chemical Engineering Thermodynamics mcq questions that explore various aspects of Chemical Engineering Thermodynamics problems. Each MCQ is crafted to challenge your understanding of Chemical Engineering Thermodynamics 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 Chemical Engineering Thermodynamics 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 Chemical Engineering Thermodynamics. 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 Chemical Engineering Thermodynamics knowledge to the test? Let's get started with our carefully curated MCQs!

Chemical Engineering Thermodynamics MCQs | Page 6 of 55

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Q51.
A chemical reaction will occur spontaneously at constant pressure and temperature, if the free energy is

a.

zero

b.

positive

c.

negative

d.

none of these

Discuss
Answer: (c).negative
Q52.
Fundamental principle of refrigeration is based on the __________ law of thermodynamics.

a.

zeroth

b.

first

c.

second

d.

third

Discuss
Answer: (c).second
Q53.
For a spontaneous process, free energy

a.

is zero

b.

increases

c.

decreases whereas the entropy increases

d.

and entropy both decrease

Discuss
Answer: (c).decreases whereas the entropy increases
Q54.
Equilibrium constant decreases as the temperature

a.

increases, for an exothermic reaction.

b.

decreases, for an exothermic reaction.

c.

increases, for an endothermic reaction.

d.

none of these.

Discuss
Answer: (a).increases, for an exothermic reaction.
Q55.
All gases during throttling process at atmospheric temperature and pressure show a cooling effect except

a.

COโ‚‚

b.

Hโ‚‚

c.

Oโ‚‚

d.

Nโ‚‚

Discuss
Answer: (b).Hโ‚‚
Q56.
Compressibility factor for almost all the gases are approximately same at the same

a.

pressure and temperature.

b.

reduced pressure and reduced temperature.

c.

critical pressure and critical temperature.

d.

none of these.

Discuss
Answer: (b).reduced pressure and reduced temperature.
Q57.
Pick out the wrong statement.

a.

Activity co-efficient is dimensionless.

b.

In case of an ideal gas, the fagacity is equal to its pressure.

c.

In a mixture of ideal gases, the fugacity of a component is equal to the partial pressure of the component.

d.

The fugacity co-efficient is zero for an ideal gas.

Discuss
Answer: (d).The fugacity co-efficient is zero for an ideal gas.
Q58.
"At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero". This follows from the

a.

third law of thermodynamics

b.

second law of thermodynamics

c.

Nernst heat theorem

d.

Maxwell's relations

Discuss
Answer: (a).third law of thermodynamics
Q59.
During Joule-Thomson expansion of gases

a.

enthalpy remains constant.

b.

entropy remains constant.

c.

temperature remains constant.

d.

none of these.

Discuss
Answer: (a).enthalpy remains constant.
Q60.
The accentric factor of a materical, 'ฯ‰', is defined as ฯ‰ = -logโ‚โ‚€(Prsat)Trโป¹ = 0.7, where, Prsat = reduced vapor pressure, Tr = reduced temperature. The value of accentric factor is always

a.

> 2

b.

< 1

c.

> 1

d.

< 3

Discuss
Answer: (b).< 1
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