Mcq on first law of thermodynamics

 The Mechanical engineering, is playing a vital role in today's Technology
It Assist you to done things with ease, and also it brings the helpful technologies to modernize our society.

So keeping these things in mind, Lets learn about the topic of Mcq on first law of thermodynamics

Multiple choice questions (MCQ)on First law of thermodynamics.
Mcq on First law of thermodynamics
First law of thermodynamics


Objective questions:
1. Which law states that the energy cannot be created nor be destroyed.
A. First law of thermodynamics
B. Second law of thermodynamics
C. Third law of Thermodynamics

Answer: A

2. Who discovered the first law of thermodynamics
A. Newton
B. Joule
C. Lewis
D. Henery

Answer: B

3. First law deals with the law of conservation of energy.
A. True
B. False

Answer: A

4. Equation of the first law of thermodynamics is as follows...
A. E= i- w
B. E= i* w
C. E= i+ w
D. E= i÷ w

Answer: C
5. First law of thermodynamics is all about...
A. Enthalpy
B. Entropy
C. Internal energy
D. Temperature

Answer: C

6. Storage of energy the property is..
A. Temperature
B. Internal energy
C. Enthalpy
D. Entropy

Answer: B

7. Internal energy is a point function.
A. True
B. False

Answer: A

8. Enthalpy is a directly proportional to...
A. Internal energy
B. Entropy
C. Pressure
D. Volume

Answer: A

9. SI unit of enthalpy is...
A. J/kg
B. J/k
C. Kg/J
D. K/kgk

Answer: A

10. SI unit of entropy is...
A. J/kg
B. J/k
C. Kg/J
D. K/kgk

Answer: B
11. Work and heat are path function.
A. True
B. False

Answer: A

12. Arc length is example of path function.
A. True
B. False

Answer: A

13. Pressure is a extensive property of thermodynamics system.
A. True
B. False

Answer: B

14. Volume is extensive Property of thermodynamics system.
A. True
B. False

Answer: A

15. Specific volume of a system is which property...
A. Intensive
B. Extensive
C. Both of the above
D. None of the above

Answer: A

16. The specific heat of water is....
A. 1.817
B. 2.521
C. 4.187
D. 2187

Answer: C

17. An open system in which both the heat and work as well as mass transfer through the boundary of system.
A. True
B. False

Answer: A
18. One kilowatt is equal to...
A. 1Nm/s
B. 100N
C. 1000N
D. 1000Nm/s

Answer: D

19. The absolute zero pressure will be...
A. When molecular momentum of the system becomes zero
B. At sea level
C. At temperature -273 k
D. At the centre of the earth

Answer: A

20. The state of a substance whose evaporation from its liquid state is complete is known as,
A. Vapour
B. Perfect gas
C. Steam
D. Air

Answer: B

21. The amount of heat required to raise the temperature of..... Water through 1 degree is called kilojoule.
A. 1g
B. 10g
C. 100g
D. 1000g

Answer: D

22. The free expansion is.... Non flow process.
A. Reversible
B. Irreversible

Answer: B

23. The isothermal and isentropic process are reversible non flow process.
A. Agree
B. Disagree

Answer: A

24. The gas constant (R) is equal to the...
A. Sum of two specific heat
B. Difference of two specific heat
C. Product of two specific heat
D. Ratio of specific heat

Answer: B
25. The value of CP/CV for air is..
A. 1
B. 1.4
C. 1.8
D. 2.4

Answer: B


Here we concluding, If you have any queries about this topic then feel free to comment below.


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