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!

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Chemical Engineering Thermodynamics MCQs | Page 44 of 55

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Q431.
Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg K) to 150 kPa) (entropy of saturated liquid = 1.4336 kJ/kg . K, entropy of saturated vapour = 7.2234 kJ/kg. K) The exit condition of steam is

a.

superheated vapour.

b.

partially condensed vapour with quality of 0.9.

c.

saturated vapour.

d.

partially condensed vapour with quality of 0.1.

Discuss
Answer: (a).superheated vapour.
Q432.
An isentropic process is carried out at constant

a.

volume

b.

pressure

c.

temperature

d.

all (a), (b) and (c)

Discuss
Answer: (a).volume
Q433.
All gases except __________ shows a cooling effect during throttling process at atmospheric temperature and pressure.

a.

oxygen

b.

nitrogen

c.

air

d.

hydrogen

Discuss
Answer: (d).hydrogen
Q434.
High pressure steam is expanded adiabati-cally and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ฮ”H and ฮ”S respectively for this process:

a.

ฮ” H = 0 and ฮ”S = 0.

b.

ฮ” H โ‰  0 and ฮ”S = 0.

c.

ฮ” H โ‰  0 and ฮ”S โ‰  0.

d.

ฮ” H = 0 and ฮ”S โ‰  0.

Discuss
Answer: (b).ฮ” H โ‰  0 and ฮ”S = 0.
Q435.
The necessary condition for phase equilibrium in a multiphase system of N components is that the

a.

chemical potentials of a given component should be equal in all phases.

b.

chemical potentials of all components should be same in a particular phase.

c.

sum of the chemical potentials of any given component in all the phases should be the same.

d.

none of these.

Discuss
Answer: (a).chemical potentials of a given component should be equal in all phases.
Q436.
The work done in isothermal compression compared to that in adiabatic compression will be

a.

less

b.

more

c.

same

d.

more or less depending upon the extent of work done

Discuss
Answer: (b).more
Q437.
For organic compounds, group contribution method can be used for the estimation of

a.

critical properties.

b.

specific gravity.

c.

specific volume.

d.

thermal conductivity.

Discuss
Answer: (a).critical properties.
Q438.
Specific __________ does not change during phase change at constant temperature and pressure.

a.

entropy

b.

Gibbs energy

c.

internal energy

d.

enthalpy

Discuss
Answer: (b).Gibbs energy
Q439.
When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is

a.

more in vapour phase.

b.

more in liquid phase.

c.

same in both the phases.

d.

replaced by chemical potential which is more in vapour phase.

Discuss
Answer: (c).same in both the phases.
Q440.
In the equation PVโฟ = constant, if the value of n = y = Cแตจ/Cแตฅ, then it represents a reversible __________ process.

a.

isothermal

b.

adiabatic

c.

isentropic

d.

polytropic

Discuss
Answer: (c).isentropic
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