Out of the compounds given below , the vapour presssure of (B) at a particular temperature is :

Options

A. Higher than that of A
B. Lower than that of B
C. Higher of lower than (A) ,depending on the size of the vessel
D. Same as that of (A)

Answer

A

Explanation

In (A) Para -nitrophenol intermolecular between two molecules H - exisons , while in (B) ortho nitrophenol intramolecular H - benefing exitons . The point of (B) is lower than (A) and , thus (B) i.e ., (B) has higher vapour pressure .