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 49 of 55

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Q481.
__________ does not change during phase transformation processes like sublimation, melting & vaporisation.

a.

Entropy

b.

Gibbs free energy

c.

Internal energy

d.

all (a), (b) & (c)

Discuss
Answer: (b).Gibbs free energy
Q482.
Which one is true for a throttling process ?

a.

A gas may have more than one inversion temperatures.

b.

The inversion temperature is different for different gases.

c.

The inversion temperature is same for all gases.

d.

The inversion temperature is the temperature at which Joule-Thomson co-efficient is infinity.

Discuss
Answer: (b).The inversion temperature is different for different gases.
Q483.
A gas performs the maximum work, when it expands

a.

non-uniformly

b.

adiabatically

c.

isobarically

d.

isothermally

Discuss
Answer: (c).isobarically
Q484.
There is a change in __________ during the phase transition.

a.

volume

b.

pressure

c.

temperature

d.

all a, b & c

Discuss
Answer: (a).volume
Q485.
Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is

a.

positive

b.

negative

c.

zero

d.

infinity

Discuss
Answer: (c).zero
Q486.
First law of thermodynamics deals with the

a.

direction of energy transfer.

b.

reversible processes only.

c.

irreversible processes only.

d.

none of these.

Discuss
Answer: (a).direction of energy transfer.
Q487.
1m³ of an ideal gas at 500 K and 1000 kPa expands reversibly to 5 times its initial volume in an insulated container. If the specific heat capacity (at constant pressure) of the gas is 21 J/mole . K, the final temperature will be

a.

35 K

b.

174 K

c.

274 K

d.

154 K

Discuss
Answer: (c).274 K
Q488.
For a thermodynamic system containing 'x' chemical species, the maximum number of phases that can co-exist at equilibrium is

a.

x

b.

x + 1

c.

x + 2

d.

x + 3

Discuss
Answer: (c).x + 2
Q489.
A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is ฮฆแตข yแตข P = Yแตข xแตข fแตข° where, ฮฆ is a vapor fugacity component, Yแตข is the liquid activity co-efficient and fแตข° is the fugacity of the pure component i. The Kแตข value (Yแตข = Kแตข xแตข) is therefore, in general a function of

a.

temperature only.

b.

temperature and pressure only.

c.

temperature, pressure and liquid composition xแตข only.

d.

temperature, pressure, liquid composition xแตข and vapour composition yแตข.

Discuss
Answer: (c).temperature, pressure and liquid composition xแตข only.
Q490.
Standard temperature and pressure (S.T.P.) is

a.

0°C and 750 mm Hg

b.

15°C and 750 mm Hg

c.

0°C and 1 kgf/cm²

d.

15°C and 1 kgf/cm²

Discuss
Answer: (a).0°C and 750 mm Hg
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