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 24 of 55

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Q231.
In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in

a.

enhanced COP.

b.

decreased COP.

c.

no change in the value of COP.

d.

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

Discuss
Answer: (a).enhanced COP.
Q232.
For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions, one mole of water in liquid phase has a volume of 25.28 cm³ and that in vapour phase in 391.1 cm³.Fugacity of water (in kPa) at 9000 kPa will be

a.

6738.9

b.

6753.5

c.

7058.3

d.

9000

Discuss
Answer: (b).6753.5
Q233.
The heat capacities for the ideal gas state depend upon the

a.

pressure

b.

temperature

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (b).temperature
Q234.
Which of the following will increase the volume of a real gas by four times ?

a.

Doubling the absolute temperature as well as pressure of the gas.

b.

Reducing pressure to one fourth at constant temperature.

c.

Reducing temperature to one fourth at constant pressure.

d.

Reducing the temperature to half and doubling the pressure.

Discuss
Answer: (b).Reducing pressure to one fourth at constant temperature.
Q235.
Pick out the wrong statement.

a.

A Refrigeration cycle violates the second law of thermadynamics.

b.

Refrigeration cycle is normally represented by a temperature vs. entropy plot.

c.

In a refrigerator, work required decreases as the temperature of the refrigerator and the temperature at which heat is rejected increases.

d.

One ton of refrigeration is equivalent to the rate of heat absorption equal to 3.53 kW.

Discuss
Answer: (a).A Refrigeration cycle violates the second law of thermadynamics.
Q236.
The equation, PV = nRT, is best obeyed by gases at

a.

low pressure & high temperature.

b.

high pressure & low temperature.

c.

low pressure & low temperature.

d.

none of these.

Discuss
Answer: (a).low pressure & high temperature.
Q237.
Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole.

a.

0

b.

273

c.

25

d.

none of these

Discuss
Answer: (a).0
Q238.
Generation of heat by friction is an example of a/an __________ change.

a.

isothermal

b.

irreversible

c.

adiabatic

d.

reversible

Discuss
Answer: (b).irreversible
Q239.
A domestic refrigerator has a/an __________ cooled condenser.

a.

water

b.

air

c.

evaporative

d.

gas

Discuss
Answer: (b).air
Q240.
The extensive properties are

a.

volume, mass and number of moles.

b.

free energy, entropy and enthalpy.

c.

both (a) and (b).

d.

none of these.

Discuss
Answer: (c).both (a) and (b).
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