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 9 of 55

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Q81.
Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in

a.

increased COP.

b.

same COP.

c.

decreased COP.

d.

increased or decreased COP ; depending upon the type of refrigerant.

Discuss
Answer: (a).increased COP.
Q82.
Pick out the correct statement.

a.

If an insoluble gas is passed through a volatile liquid placed in a perfectly insulated container, the temperature of the liquid will increase.

b.

A process is irreversible as long as Ξ” S for the system is greater than zero.

c.

The mechanical work done by a system is always equal to ꭍP.dV.

d.

The heat of formation of a compound is defined as the heat of reaction leading to the formation of the compound from its reactants.

Discuss
Answer: (d).The heat of formation of a compound is defined as the heat of reaction leading to the formation of the compound from its reactants.
Q83.
Grams of butane (Cβ‚„H₁₀) formed by the liquefaction of 448 litres of the gas (measured at (STP) would be

a.

580

b.

640

c.

1160

d.

data insufficient; can't be computed

Discuss
Answer: (c).1160
Q84.
The thermodynamic law, PVΚΈ = constant, is not applicable in case of

a.

ideal compression of air.

b.

free expansion of an ideal gas.

c.

adiabatic expansion of steam in a turbine.

d.

adiabatic compression of a perfect gas.

Discuss
Answer: (b).free expansion of an ideal gas.
Q85.
When a gas in a vessel expands, its internal energy decreases. The process involved is

a.

reversible

b.

irreversible

c.

isothermal

d.

adiabatic

Discuss
Answer: (a).reversible
Q86.
A system is said to be isopiestic, if there is no __________ change.

a.

temperature

b.

pressure

c.

volume

d.

none of these

Discuss
Answer: (b).pressure
Q87.
In a turbine, the fluid expands almost

a.

isothermally

b.

isobarically

c.

adiabatically

d.

none of these

Discuss
Answer: (c).adiabatically
Q88.
The unity of Planck's constant 'h' in the equation, E = hv is

a.

J/s

b.

J.S

c.

J/kmol

d.

kmol/J

Discuss
Answer: (b).J.S
Q89.
Specific/molar Gibbs free energy for a pure substance does not change during

a.

sublimation

b.

vaporisation

c.

melting

d.

either (a), (b) or (c)

Discuss
Answer: (d).either (a), (b) or (c)
Q90.
What is the value of ln y (where y = activity co-efficient) for ideal gases ?

a.

Zero

b.

Unity

c.

Infinity

d.

Negative

Discuss
Answer: (a).Zero
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