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 11 of 55

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Q101.
Heat pump

a.

accomplishes only space heating in winter.

b.

accomplishes only space cooling in summer.

c.

accomplishes both (a) and (b).

d.

works on Carnot cycle.

Discuss
Answer: (c).accomplishes both (a) and (b).
Q102.
The temperature at which both liquid and gas phases are identical, is called the __________ point.

a.

critical

b.

triple

c.

freezing

d.

boiling

Discuss
Answer: (a).critical
Q103.
The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise.

a.

increases

b.

decreases

c.

remains unchanged

d.

decreases linearly

Discuss
Answer: (a).increases
Q104.
Co-efficient of Performance (COP) of a refrigerator is the ratio of the

a.

work required to refrigeration obtained.

b.

refrigeration obtained to the work required.

c.

lower to higher temperature.

d.

higher to lower temperature.

Discuss
Answer: (b).refrigeration obtained to the work required.
Q105.
A solid metallic block weighing 5 kg has an initial temperature of 500°C. 40 kg of water initially at 25°C is contained in a perfectly insulated tank. The metallic block is brought into contact with water. Both of them come to equilibrium. Specific heat of block material is 0.4 kJ.kgโป¹. Kโป¹. Ignoring the effect of expansion and contraction and also the heat capacity to tank, the total entropy change in kJ.kgโป¹ , Kโป¹ is

a.

-1.87

b.

0

c.

1.26

d.

3.91

Discuss
Answer: (b).0
Q106.
dW and dq are not the exact differential, because q and W are

a.

state functions

b.

path functions

c.

intensive properties

d.

extensive properties

Discuss
Answer: (b).path functions
Q107.
Entropy change of mixing two liquid substances depends upon the

a.

molar concentration

b.

quantity (i.e. number of moles)

c.

both (a) and (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) and (b)
Q108.
The four properties of a system viz. P, V, T, S are related by __________ equation.

a.

Gibbs-Duhem

b.

Gibbs-Helmholtz

c.

Maxwell's

d.

none of these

Discuss
Answer: (c).Maxwell's
Q109.
If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.

a.

100

b.

50

c.

205

d.

200

Discuss
Answer: (d).200
Q110.
Pick out the wrong statement.

a.

Cแตจ of monoatomic gases such as metallic vapor is about 5 kcal/kg.atom.

b.

The heat capacity of solid inorganic substance is exactly equal to the heat capacity of the substance in the molten state.

c.

There is an increase in entropy, when a spontaneous change occurs in an isolated system.

d.

At absolute zero temperature, the heat capacity for many pure crystalline substances is zero.

Discuss
Answer: (b).The heat capacity of solid inorganic substance is exactly equal to the heat capacity of the substance in the molten state.
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