Physics Thermodynamics NUMS 2023
PMDC Verified Question 28 of 54
In isochoric process:
A
Temperature is kept constant
B
Volume is kept constant
C
Exchange of heat is zero
D
Pressure is kept constant
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Volume is kept constant
1. Concept:

Thermodynamic process names reflect the specific physical parameter that is rigidly locked in place during the state change.

2. Formula:

$$\Delta V = 0$$

3. Solution:

  • 'Iso' means constant.


  • 'Choric' derives from the Greek 'chora', meaning space or volume.


  • Therefore, an Isochoric process is one where the volume of the system is forced to be kept strictly constant, usually by heating a gas in a sealed, rigid steel container.


4. Why other options are incorrect:

Constant pressure describes an isobaric process. Constant temperature describes an isothermal process. Zero heat exchange describes an adiabatic process.

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