In a thermodynamic process, which of the following statements is NOT true?

Question

G1 Physics · Accepted Answer

Step 1: Isochoric means constant V, not constant P. Step 2: Using ideal gas law PV = nRT at V = constant, pressure is proportional to temperature: P ∝ T. Step 3: Therefore pressure can change in an isochoric process, and statement (B) is false. Step 4: Adiabatic entails Q = 0 (typically thermal insulation); isothermal entails T constant; and PVᵞ = constant describes a reversible adiabatic ideal-gas process. Final answer: (B).