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 4 of 55

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Q31.
Out of the following refrigeration cycles, which one has maximum COP ?

a.

Air cycle

b.

Carnot cycle

c.

Ordinary vapor compression cycle

d.

Vapor compression with a reversible expansion engine

Discuss
Answer: (b).Carnot cycle
Q32.
Pick out the correct statement:

a.

In an isothermal system, irreversible work is more than reversible work.

b.

Under reversible conditions, the adiabatic work is less than isothermal work.

c.

Heat, work, enthalpy and entropy are all 'state functions'.

d.

Matter and energy can not be exchanged with the surroundings in a closed system.

Discuss
Answer: (b).Under reversible conditions, the adiabatic work is less than isothermal work.
Q33.
In any spontaneous process,

a.

only F decreases

b.

only A decreases

c.

both F and A decreases

d.

both F and A increase

Discuss
Answer: (c).both F and A decreases
Q34.
Which of the following is a thermodynamic property of a system ?

a.

Concentration

b.

Mass

c.

Temperature

d.

Entropy

Discuss
Answer: (d).Entropy
Q35.
The co-efficient of performance (COP) of a refrigerating system, which is its index of performance, is defined as the ratio of useful refrigeration to the net work. The units of __________ and COP are the same.

a.

kinematic viscosity

b.

work

c.

temperature

d.

none of these

Discuss
Answer: (d).none of these
Q36.
In jet refrigerators, the refrigerating fluid is practically always

a.

water

b.

ammonia

c.

freon

d.

brine

Discuss
Answer: (a).water
Q37.
Water on heating from 1 to 4°C

a.

contracts

b.

expands

c.

has same volume

d.

may contract or expand

Discuss
Answer: (a).contracts
Q38.
Pick out the correct statement.

a.

Compression ratio of an Otto engine is comparatively higher than a diesel engine.

b.

Efficiency of an Otto engine is higher than that of a diesel engine for the same compression ratio.

c.

Otto engine efficiency decreases with the rise in compression ratio, due to decrease in work produced per quantity of heat.

d.

Diesel engine normally operates at lower compression ratio than an Otto engine for an equal output of work.

Discuss
Answer: (b).Efficiency of an Otto engine is higher than that of a diesel engine for the same compression ratio.
Q39.
Maximum work that could be secured by expanding the gas over a given pressure range is the __________ work.

a.

isothermal

b.

adiabatic

c.

isentropic

d.

none of these

Discuss
Answer: (a).isothermal
Q40.
Internal energy change of a system over one complete cycle in a cyclic process is

a.

zero

b.

+ve

c.

-ve

d.

dependent on the path

Discuss
Answer: (a).zero
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