Classify each of the following statements as True (T) or False (F). You have to
ID: 702211 • Letter: C
Question
Classify each of the following statements as True (T) or False (F). You have to circle the right answer. ) (T) (F) Kinetic energy of the system as a whole is considered as a macroscopic form of the energy of the system 2) (T) (F) 3) (T) (F) An adiabatic system does not allow the transfer of heat. The zeroth law of thermodynamics states that if two bodies are in thermal equilibrium with a third body, then these two bodies are not necessarily in thermal equilibrium with each other. Gases deviate from the ideal-gas behavior the most in the neighborhood of the critical point A methane (CH) tank is filled with a mixture of liquid and vapor methane. The content of this tank can be considered pure substance Refrigerant R-134a undergoes a constant pressure (isobaric) process in a closed can be expressed as Qi m Oh Specific gravity of a substance is the weight of that substance per unit mass.Explanation / Answer
Solution:
1. Kinetic energy of the system as a whole is considered as macroscopic form of energy of the system. --True
2. An adiabatic system doesnot allow the transfer of heat.--False.
Correct answer: An adiabatic process doesnot allow the transfer of heat.
3. The zeroth law of thermodynamics states that if two bodies are in thermal equlibrium with a third body, then the two bodies are not nessesarily in thermal equlibrium with each other. -- False
Correct answer:The zeroth law of thermodynamics states that if two bodies are in thermal equlibrium with a third body, then the two bodies are nessesarily in thermal equlibrium with each other.
4. Gases deviate from ideal-gas behaviour the most in neighbourhood of the critical point.--True
5. A methane tank is filled with a mixture of liquid and vapor methane. The content of the tank can be considered as pure substance.-- True.
6. Refrrigirant R-134a undergoes a constant pressure(isobaric) process in a closedsystem. If only boundary work is considered then the heat transfer for the process can be expressed as Q=m del. H.--True.
7.Specific gravity of a substance is the weight of that substance per unit mass.-- False
Correct answer- Specific gravity of a substance is the weight of substance per unit volume of the substance relative to that of water.
Specific gravity= (Weight of substance/ Volume of substance)/(Weight of water/Volume of water)
or
Specific gravity= Density of Substance/ Density of water.