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  • Help me answer: In thermodynamic processes, which of the following statements is not true?

In thermodynamic processes, which of the following statements is not true?

  • Option 1)

    In an isochoric process, pressure remains constant

  • Option 2)

    In an isothermal process the temperature remains constant

  • Option 3)

    In an adiabatic process, process PV^{\gamma}=constant

  • Option 4)

    In an adiabatic process, the system is insulated from the surroundings

 

Answers (1)

Using

First law in Isothermal Process -

Delta Q= Delta U+Delta W
 

- wherein

Isothermal process

Delta T= 0

Delta U= 0

Heat supplied is equal to work done.

 

 

Adiabatic Process -

When a Thermodynamic System undergoes a change in such a way that no exchange of heat takes place.

- wherein

Delta Q= 0

 

 

Work done in isochoric process -

W = 0
 

- wherein

ecause W= int P, dV

since dv= 0

W = 0

 

 In isochoric process, volume is constant.

In adiabatic process, a = 0

and PV^{\gamma } =\ constant

In isothermal process, T = constant 


Option 1)

In an isochoric process, pressure remains constant

This option is correct

Option 2)

In an isothermal process the temperature remains constant

This option is incorrect

Option 3)

In an adiabatic process, process PV^{\gamma}=constant

This option is incorrect

Option 4)

In an adiabatic process, the system is insulated from the surroundings

This option is incorrect

Posted by

Vakul

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