Verified Solution • 2025–26 Session
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QJEEM20Ch30cd: JEE Main 2020 Chemistry - Class 12 JEEM20Ch30cd Solution: A graph of vapour pressure and temperature for three different…
A graph of vapour pressure and temperature for three different liquids X, Y, and Z is shown below : 
The following inferences are made :
(A) X has higher intermolecular interactions compared to Y.
(B) X has lower intermolecular interactions compared to Y.
(C) Z has lower intermolecular interactions compared to Y.
The correct inference (s) is / are :
The following inferences are made : (A) X has higher intermolecular interactions compared to Y.
(B) X has lower intermolecular interactions compared to Y.
(C) Z has lower intermolecular interactions compared to Y.
The correct inference (s) is / are :
Multiple Choice Options
- A (B)
- B (A)
- C (C)
- D (A) and (C)
Step-by-Step Verified Solution
Vapour pressure of a liquid at a given temperature is inversely proportional to intermolecular force of attraction. At the same temperature, vapour pressure of X is higher than that of Y.
Therefore (X) has lower intermolecular interactions compared to Y. Statement (B) is correct.
Therefore (X) has lower intermolecular interactions compared to Y. Statement (B) is correct.