Engineering Thermodynamics Mcq Questions and Answers

Published: 25 Nov 2025

1. The absolute zero temperature is taken as
a) 237°C
b) 237°C
c) 273°C
d) -273°C

2. Second law of thermodynamics defines
a) Work
b) Internal energy
c) Entropy
d) None of them

3. The hyperbolic process is governed by __ Law
a) Boyle’s
b) Charles’
c) Gay-Lussac
d) Avogadro’s

4. Carnot cycle has maximum efficiency for _ Engine
a) Petrol
b) Diesel
c) Reversible
d) Irreversible

5. A control volume refers to
a) A fixed region in space
b) A specified mass
c) An isolated system
d) A reversible process only

6. Which of the following is not a property of the system
a) Temperature
b) Pressure
c) Specific volume
d) Heat

7. The ratio of two specific heats of air is equal to
a) 0.17
b) 0.24
c) 0.1
d) 1.41

8. Which of the following has highest calorific value __ gas
a) Coal
b) Producer
c) Mond
d) Blast furnace

9. Total heat of a substance is also known as
a) Enthalpy
b) Entropy
c) Thermal capacity
d) None of them

10. Entropy change depends on
a) Heat transfer
b) Mass transfer
c) Change of temperature
d) Thermodynamic state

Asif Ali Avatar
Asif Ali

Hi, I’m Asif Ali. I have a bachelor’s degree in Mechanical Engineering. Through Mechanical Guide Hub, I aim to simplify complex mechanical concepts and present them in a clear and engaging way. This platform is built to make learning mechanical topics easy, enjoyable, and accessible for everyone.

Please Write Your Comments
Comments (0)
Leave your comment.
Write a comment
INSTRUCTIONS:
  • Be Respectful
  • Stay Relevant
  • Stay Positive
  • True Feedback
  • Encourage Discussion
  • Avoid Spamming
  • No Fake News
  • Don't Copy-Paste
  • No Personal Attacks
`