MCQ FIRST LAW OF THERMODYNAMICS
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MCQ FIRST LAW OF THERMODYNAMICS
- Total energy of the universe is
- (a) Increasing
- (b) Decreasing
- (c) Increasing as well as decreasing
- (d) None
Ans: (d)
- As per First Law of Thermodynamics, energy can be
- (a) Created
- (b) Destroyed
- (c) Created as well as destroyed
- (d) None
Ans:(d)
- As per First Law of Thermodynamics, energy cannot be
- (a) Created
- (b) Destroyed
- (c) Created as well as destroyed
- (d) None
Ans:(c)
- Total energy of the universe is
(a) Increasing
(b) Decreasing
(c) Constant
(d) None
Ans: (c)
- An intensive property is
- (a) Independent of volume
- (b) Independent of density
- (c) Independent of mass
- (d) None
Ans: ©
- Which of the following is an intensive property?
- (a) Volume
- (b) Enthalpy
- (c) Entropy
- (d) None
Ans: (d)
- Which of the following is an intensive property?
- (a) Volume
- (b) Enthalpy
- (c) Temperature
- (d) None
Ans: (c)
- Which of the following is NOT an intensive property?
- (a) Volume
- (b) Pressure
- (c) Temperature
- (d)None
Ans: (a)
- Heat supplied to a system is
- (a) Work done –Change in internal energy
- (b) Work done +Change in internal energy
- (c) Work done Change in internal energy
- (d) None
Ans : (b)
- Conversion of heat energy into mechanical work is
- (a) 100 %
- (b) 80%
- (c) 50%
- (d) None
Ans: (d)
- Conversion of heat energy into mechanical work is
- (a) >100 %
- (b) <100%
- (c) =100%
- (d) None
Ans: (b)s
- The temperature of a system is
- (a) Extensive property
- (b) Intensive property
- (c) Extensive as well as intensive property
- (d) None
Ans: (b)
- Force is an
- (a) Extensive property
- (b) Intensive property
- (c) Extensive as well as intensive property
- (d) None
Ans: (a)
- First law of thermodynamics is a law of
- (a) Conservation of enthalpy
- (b)Conservation of entropy
- (c) Conservation of internal energy
- (d) None
Ans: (d)
- First law of thermodynamics is a law of
- (a) Conservation of enthalpy
- (b) Conservation of entropy
- (c) Conservation of energy
- (d) None
Ans: ( c)
- Which Property is related to the First Law of Thermodynamics?
(a)Enthalpy
(b) Entropy
© Internal energy
(d)None
Ans: ( c )
- An open system has
- (a) Only Mass transfer
- (b) Only Energy transfer
- (c) Mass as well as energy transfer
- (d) None
Ans: (c )
- An closed system has
- (a) Only Mass transfer
- (b) Only Energy transfer
- (c) Mass as well as energy transfer
- (d) None
Ans: (a )
- An isolated system has
- (a) Only Mass transfer
- (b) Only Energy transfer
- (c)Mass as well as energy transfer
- (d) None
Ans: (d )
- An isolated system has
- (a) No Mass transfer
- (b) No Energy transfer
- (c) No Mass and no energy transfer
- (d) None
Ans: (c )
- Among the system, boundary and surrounding, the order is
- (a) System, surrounding and boundary
- (b) Surrounding, system and boundary
- (c) System, boundary and surrounding
- (d) None
Ans: (c )
- A system consists of
- (a) System, boundary and surrounding
- (b) Pressure, temperature and volume
- (c) Intensive, extensive and internal energy
- (d) None
Ans: (a)
- In a thermodynamic process, which one is NOT a path function?
- (a) Work done
- (b) Heat supplied
- (c) Internal energy
- (d) None
Ans: (c )
- In a thermodynamic process, which one is a path function?
- (a) Work done
- (b) Enthalpy
- (c) Internal energy
- (d) None
Ans: (a )
- First law of Thermodynamics deals with the Law of
- (a) Conservation of momentum
- (b) Conservation of mass
- (c) Conservation of internal energy
- (d) None
Ans : (d)
- Increase in enthalpy causes
- (a) Increase in volume
- (b) Increase in pressure
- (c) Increase in mass
- (d) None
Ans: (d)
- During an exothermic reaction, There is
- (a) Increase in enthalpy
- (b) Decrease in enthalpy
- (c) Remains constant
- (d) None
Ans : (b)
- During an exothermic reaction, There is
- (a) Increase in mass
- (b) Decrease in mass
- (c) Mass remains constant
- (d) None
Ans : (b)
- Unit of enthalpy is
- (a) kJ/kg K
- (b) kJ/m3+
- (c) kJ/kg
- (d) None
Ans: (c )
- I. unit of temperature is
- (a) 0C
- (b) 0K
- (c) 0F
- (d) None
Ans: (d)
- I. unit of temperature is
- (a) C
- (b) K
- (c) F
- (d) None
Ans: (b)
- I. unit of mass is
- (a) g
- (b) kg
- (c) lb
- (d) None
Ans: (b)
- I. unit of pressure is
- (a) Pascal
- (b) mm of Hg
- (c) bar
- (d) None
Ans: (c)
- Example of a open thermodynamic system is
- (a) Refrigerator
- (b) Air conditioner
- (c) Compressor in a refrigerator
- (d) None
Ans: ( c)
- Example of a closed thermodynamic system is
- (a) Evaporator in a Refrigerator
- (b) Condenser in an Air conditioner
- (c) Compressor in a refrigerator
- (d) None
Ans: ( d)
- Which is the thermodynamic system in a human body ?
- (a) Open system
- (b) Closed system
- (c) Isolated system
- (d) None
Ans: (a)
- The S.I. unit of power is
(a) Newton
(b) Pascal
(c) Joule
(d) None
Ans: (d)
- Which of the following is NOT a point function?
- (a) Temperature
- (b) Entropy
- (c) Pressure
- (d) None
- Ans: (d)
- . Which of the following is NOT a point function?
- (a) Temperature
- (b) Entropy
- (c) Heat
- (d) None
Ans: (c)
- Temperature remains constant in
- (a) Dalton’s Law
- (b) Charles Law
- (c) Raoult’s Law
- (d) None
Ans: (d)
- Temperature remains constant in
- (a) Dalton’s Law
- (b) Charles Law
- (c) Boyle’s Law
- (d) None
Ans: (c)