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What are thermodynamic processes ?...

What are thermodynamic processes ?

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Thermodynamic processes are as below:
(1) The process during which the temperature of system remains constant is known as isothermal process.
(2) The process during which the pressure of system remains constant is known as isobaric process.
(3) The process during which the volume of system remains constant is known as isochoric process.
(4) A process in which a system undergoes physical changes in such a way that heat is neither allowed to enter the system from surrounding nor allowed to leave the system to the surrounding is called an adiabatic process.
(5) A process in which a system undergoes series of changes which returns the system back to its initial state is known as a cyclic process.
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Knowledge Check

  • In a thermodynamics process which one of the following statement is not true ?

    A
    In an isochoric process pressure remains constant.
    B
    In an isothermal process temperature remains constant.
    C
    In an adiabatic process `PV^r` = constant.
    D
    In an adiabatic process the system is insulated from the surrounding.

  • In thermodynamic processes which of following statement is not true ?

    A
    In an isochoric process pressure remains constant.
    B
    In an isothermal process the temperature remains constant.
    C
    In an adiabatic process `PV^(gamma)` = constant.
    D
    In an adiabatic process the system is insulated from the surrounding.

  • If DeltaU and DeltaW represent the increase in internal energy and work done by the system respectively in a thermodynamical process which of the following is true?

    A
    `DeltaU=-DeltaW` , in an adiabatic process
    B
    `DeltaU=DeltaW`, in an isothermal process
    C
    `DeltaU=DeltaW` in an adiabatic process
    D
    `DeltaU=-DeltaW` in an isothermal process

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