Thermodynamics is the study of energy concerning heat and work. It is one of the most fundamental sciences and has been used to design, build, and operate engines, turbines, refrigerators, air conditioners, compressors, turbines and other devices that use heat or work.
The thermodynamic property measures the number of degrees of freedom a system has in its motion.
Read more: Thermodynamic properties.
Important Thermodynamic Property Questions with Answers
1. What are the four categories of thermodynamics?
Four categories of thermodynamics are
- Classical Thermodynamics
- Statistical Thermodynamics
- Chemical Thermodynamics
- Equilibrium Thermodynamics
2. Which among the following is a measured property?
- Gibbs
- Temperature
- Volume
- Free energy
Answer: b) Temperature
Explanation: Since the value of the temperature is directly accessible in the laboratory, it is known as the measured property.
3. What is meant by the term fundamental thermodynamic properties?
Properties of the system that are directly associated to the fundamental laws of thermodynamics are called fundamental properties.
4. Choose YES or NO: Is the ideal gas constant one of the thermodynamic properties?
- YES
- NO
Answer: b) NO
Explanation: Since the ideal gas constant does not define the system’s state, the ideal gas constant cannot be considered the thermodynamic properties.
5. Which among the following are derived properties?
- Gibbs
- Temperature
- Volume
- Internal energy
Answer: a) Gibbs
Explanation: Gibbs is the derived property among the following thermodynamic properties.
6. Entropy is _______
- Measured properties
- Fundamental properties
- Derived properties
- None of the options.
Answer: b) Fundamental properties
Explanation: Entropy is the fundamental property since it is directly related to the fundamental laws of thermodynamics.
7. State true or false: The refrigerator is not a thermodynamic system.
- TRUE
- FALSE
Answer: b) FALSE
Explanation: A refrigerator is a thermodynamic system that deals with heat and temperature.
8. Name two intensive properties.
Pressure and compressibility are the two intensive properties.
9. Choose the correct answer: Heat capacity is ________
- Intensive property
- Extensive property
Answer: b) Extensive property
Explanation: Since the value depends on the size or quantity of matter present in the system, heat capacity is classified as extensive property.
10. What is the formula to find the enthalpy?
- H = E – PV
- H = E + PV
- H = E * PV
- H = E / PV
Answer: b) H = E + PV
Explanation: H = E + PV is the formula to find the enthalpy.
Where,
H – enthalpy
E – internal energy
P – the product of the pressure
V – Volume of the system
Practice Questions
- Define thermodynamics
- List the thermodynamic properties.
- Who coined the term thermodynamics?
- Define the extensive and intensive property of the system.
- How is the thermodynamic system classified?
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