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Adiabatic equations of state are P(V^γ) = constant and T(V^(γ-1)) = constant.

1. When a thermodynamic system undergoes a change in such a way that no exchange of heat takes place between system and surroundings, then the process is adiabatic process.
2. In this process P, V and T change but ΔQ = 0.
3. P(V^γ) = constant
4. T(V^(γ-1)) = constant

Correct answer: When a thermodynamic system undergoes a change in such a way that no exchange of heat takes place between system and surroundings, then the process is adiabatic process.

Solution

Option A correctly defines an adiabatic process, where no heat exchange occurs between the system and surroundings. The other options describe specific equations related to adiabatic processes but do not define the process itself.

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