Preparing for the Joint Entrance Exam (JEE) can be a daunting task. With so many subjects to cover and so many topics to study, it can be challenging to know where to start. One essential topic in the JEE Mains syllabus is the Thermodynamics. In this article, we will provide 50+ MCQ questions on the Thermodynamics, along with detailed solutions to help you prepare for the JEE Mains exam.
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These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand Thermodynamics JEE Mains MCQ Questions with Answers.
Thermodynamics JEE Mains MCQ
The first law of thermodynamics is a statement of conservation of:
a) Energy
b) Mass
c) Momentum
d) Temperature
Which of the following is an extensive property?
a) Temperature
b) Pressure
c) Volume
d) Density
The internal energy of an ideal gas depends only on its:
a) Volume
b) Pressure
c) Temperature
d) Density
The work done in an adiabatic process is given by:
a) ΔU + Q
b) ΔU – Q
c) ΔU + PΔV
d) ΔU – PΔV
The entropy of an isolated system:
a) Decreases with time
b) Increases with time
c) Remains constant
d) Depends on the system’s temperature
The efficiency of a Carnot engine operating between two temperatures T1 and T2 is given by:
a) 1 – T2/T1
b) 1 – T1/T2
c) T1/T2
d) T2/T1
The equation of state for an ideal gas is given by:
a) PV = nRT
b) PV = nkT
c) PV = mRT
d) PV = RT
A system undergoes an isothermal process. Which of the following statements is true?
a) The internal energy of the system remains constant.
b) The pressure of the system remains constant.
c) The temperature of the system remains constant.
d) The volume of the system remains constant.
The efficiency of a heat engine is always:
a) Greater than 1
b) Less than 1
c) Equal to 1
d) Zero
The process in which no heat is exchanged with the surroundings is called:
a) Isothermal process
b) Isobaric process
c) Adiabatic process
d) Isometric process
The specific heat capacity of a substance depends on its:
a) Mass
b) Volume
c) Temperature
d) Pressure
The entropy of a system:
a) Can never decrease
b) Can only increase
c) Can decrease or increase depending on the process
d) Remains constant
The triple point of water occurs at:
a) 0°C and 1 atm
b) 0°C and 0 atm
c) 100°C and 1 atm
d) 100°C and 0 atm
The molar specific heat capacity of an ideal gas at constant volume is given by:
a) C = nCv
b) C = nCp
c) C = Cp – Cv
d) C = Cv – Cp
The second law of thermodynamics states that:
a) Energy is conserved in a system
b) Heat flows from a colder body to a hotter body
c) The entropy of a system tends to decrease
d) The entropy of a system tends to increase
The heat transfer in a solid occurs primarily through:
a) Conduction
b) Convection
c) Radiation
d) Vaporization
The heat required to raise the temperature of a substance by 1°C is called:
a) Heat capacity
b) Latent heat
c) Specific heat capacity
d) Enthalpy
The Clausius statement of the second law of thermodynamics is based on the concept of:
a) Heat engine
b) Refrigerator
c) Entropy
d) Temperature
The efficiency of an irreversible heat engine is always:
a) Greater than the efficiency of a reversible engine
b) Less than the efficiency of a reversible engine
c) Equal to the efficiency of a reversible engine
d) Zero
The critical point of a substance is the point at which:
a) It changes from a solid to a liquid
b) It changes from a liquid to a gas
c) Its density becomes zero
d) It undergoes a phase transition
The net work done by a system in a complete cycle is equal to:
a) The change in internal energy of the system
b) The heat supplied to the system
c) The product of pressure and volume change
d) Zero
The thermal efficiency of a heat engine is given by:
a) (Heat input)/(Heat output)
b) (Work output)/(Heat input)
c) (Heat output)/(Work input)
d) (Work input)/(Work output)
The absolute zero of temperature is:
a) 0°C
b) -273°C
c) 0 K
d) -273 K
The heat capacity of a substance is defined as:
a) The heat required to raise the temperature of the substance by 1°C
b) The heat required to raise the temperature of the substance by 1 K
c) The heat required to change the phase of the substance
d) The heat required to change the temperature of the substance by 1 J
The process in which the volume of a gas remains constant is called:
a) Isothermal process
b) Isobaric process
c) Adiabatic process
d) Isometric process
The efficiency of a refrigerator is given by:
a) (Heat extracted)/(Work input)
b) (Work input)/(Heat extracted)
c) (Heat extracted)/(Heat input)
d) (Heat input)/(Heat extracted)
The specific heat capacity of water is highest for:
a) Ice
b) Liquid water
c) Steam
d) They are all the same
The unit of entropy is:
a) Joule (J)
b) Kelvin (K)
c) Joule per Kelvin (J/K)
d) Kelvin per Joule (K/J)
The entropy change of a reversible process is given by:
a) ΔS = Q/T
b) ΔS = T/Q
c) ΔS = Q + T
d) ΔS = Q – T
The thermodynamic process in which the entropy of a system remains constant is called:
a) Isothermal process
b) Adiabatic process
c) Isobaric process
d) Isochoric process
The first law of thermodynamics is a statement of conservation of:
a) Energy
b) Mass
c) Momentum
d) Temperature
Which of the following is an extensive property?
a) Temperature
b) Pressure
c) Volume
d) Density
The internal energy of an ideal gas depends only on its:
a) Volume
b) Pressure
c) Temperature
d) Density
The work done in an adiabatic process is given by:
a) ΔU + Q
b) ΔU – Q
c) ΔU + PΔV
d) ΔU – PΔV
The entropy of an isolated system:
a) Decreases with time
b) Increases with time
c) Remains constant
d) Depends on the system’s temperature
The efficiency of a Carnot engine operating between two temperatures T1 and T2 is given by:
a) 1 – T2/T1
b) 1 – T1/T2
c) T1/T2
d) T2/T1
The equation of state for an ideal gas is given by:
a) PV = nRT
b) PV = nkT
c) PV = mRT
d) PV = RT
A system undergoes an isothermal process. Which of the following statements is true?
a) The internal energy of the system remains constant.
b) The pressure of the system remains constant.
c) The temperature of the system remains constant.
d) The volume of the system remains constant.
The efficiency of a heat engine is always:
a) Greater than 1
b) Less than 1
c) Equal to 1
d) Zero
The process in which no heat is exchanged with the surroundings is called:
a) Isothermal process
b) Isobaric process
c) Adiabatic process
d) Isometric process
The specific heat capacity of a substance depends on its:
a) Mass
b) Volume
c) Temperature
d) Pressure
The entropy of a system:
a) Can never decrease
b) Can only increase
c) Can decrease or increase depending on the process
d) Remains constant
The triple point of water occurs at:
a) 0°C and 1 atm
b) 0°C and 0 atm
c) 100°C and 1 atm
d) 100°C and 0 atm
The molar specific heat capacity of an ideal gas at constant volume is given by:
a) C = nCv
b) C = nCp
c) C = Cp – Cv
d) C = Cv – Cp
The second law of thermodynamics states that:
a) Energy is conserved in a system
b) Heat flows from a colder body to a hotter body
c) The entropy of a system tends to decrease
d) The entropy of a system tends to increase
The heat transfer in a solid occurs primarily through:
a) Conduction
b) Convection
c) Radiation
d) Vaporization
The heat required to raise the temperature of a substance by 1°C is called:
a) Heat capacity
b) Latent heat
c) Specific heat capacity
d) Enthalpy
The Clausius statement of the second law of thermodynamics is based on the concept of:
a) Heat engine
b) Refrigerator
c) Entropy
d) Temperature
The efficiency of an irreversible heat engine is always:
a) Greater than the efficiency of a reversible engine
b) Less than the efficiency of a reversible engine
c) Equal to the efficiency of a reversible engine
d) Zero
The critical point of a substance is the point at which:
a) It changes from a solid to a liquid
b) It changes from a liquid to a gas
c) Its density becomes zero
d) It undergoes a phase transition
The net work done by a system in a complete cycle is equal to:
a) The change in internal energy of the system
b) The heat supplied to the system
c) The product of pressure and volume change
d) Zero
The thermal efficiency of a heat engine is given by:
a) (Heat input)/(Heat output)
b) (Work output)/(Heat input)
c) (Heat output)/(Work input)
d) (Work input)/(Work output)
The absolute zero of temperature is:
a) 0°C
b) -273°C
c) 0 K
d) -273 K
The heat capacity of a substance is defined as:
a) The heat required to raise the temperature of the substance by 1°C
b) The heat required to raise the temperature of the substance by 1 K
c) The heat required to change the phase of the substance
d) The heat required to change the temperature of the substance by 1 J
The process in which the volume of a gas remains constant is called:
a) Isothermal process
b) Isobaric process
c) Adiabatic process
d) Isometric process
The efficiency of a refrigerator is given by:
a) (Heat extracted)/(Work input)
b) (Work input)/(Heat extracted)
c) (Heat extracted)/(Heat input)
d) (Heat input)/(Heat extracted)
The specific heat capacity of water is highest for:
a) Ice
b) Liquid water
c) Steam
d) They are all the same
The unit of entropy is:
a) Joule (J)
b) Kelvin (K)
c) Joule per Kelvin (J/K)
d) Kelvin per Joule (K/J)
The entropy change of a reversible process is given by:
a) ΔS = Q/T
b) ΔS = T/Q
c) ΔS = Q + T
d) ΔS = Q – T
The thermodynamic process in which the entropy of a system remains constant is called:
a) Isothermal process
b) Adiabatic process
c) Isobaric process
d) Isochoric process
We hope there JEE MCQ of Class 11 Thermodynamics will help you to score an excellent rank in JEE Mains and Advanced. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.
