ANS:A -

A graph between the logarithm of the vapor pressure ratio (ln⁡(𝑃𝑖𝑃))ln(PPi​​)) and the reciprocal of the absolute temperature (1𝑇T1​) is called a Wilson plot. In the Wilson plot, 𝑃𝑖Pi​ is the vapor pressure of the 𝑖ith component, 𝑃P is the total system pressure, and 𝑇T is the absolute temperature. It is commonly used in the analysis of binary vapor-liquid equilibrium data to determine the parameters of activity coefficient models such as the Wilson equation. Therefore, the correct statement is: ln⁡(𝑃𝑖𝑃)ln(PPi​​) Vs. 1𝑇T1​.