Step 1 : Understanding the Question:
This question focuses on basic thermodynamic terminology and the definitions of various processes. We must identify the core characteristic that defines an adiabatic process from the given options.
Step 2 : Key Formulas and Approach:
The processes occurring within a thermodynamic system are categorized based on physical properties that are held constant. This can be analyzed using the First Law of Thermodynamics:
\[ dU = dQ - dW \]
where \( dU \) is the change in internal energy, \( dQ \) is the heat added to the system, and \( dW \) is the work done by the system.
Step 3 : Detailed Explanation:
By definition, an adiabatic process is one in which the system is thermally isolated from its surroundings, meaning there is no exchange of heat energy. This condition is represented mathematically as \( dQ = 0 \).
Let us evaluate each option to find the correct match based on thermodynamic definitions.
Option (A) states that no heat is exchanged with the surroundings, which perfectly matches the condition \( dQ = 0 \) for an adiabatic process.
Option (B) describes an isothermal process, where the temperature \( T \) of the system remains constant throughout (\( dT = 0 \)).
Option (C) describes an isobaric process, where the pressure \( P \) of the system remains constant (\( dP = 0 \)).
Option (D) describes an isochoric (or isometric) process, where the volume \( V \) of the system remains constant (\( dV = 0 \)).
Step 4 : Final Answer:
The correct characteristic of an adiabatic process is that no heat is exchanged with the surroundings, which corresponds to option (A).