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.
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| 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
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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