X is a non-volatile solute and Y is a volatile solvent. The following vapour pressures are observed by dissolving X and Y :

Question

$X/mol\; lit^{-1}$	$Y/mm\;of\;Hg$
0.10 0.25 0.01	$P_1$ $P_2$ $P_3$

The correct order of vapour pressure is :

 $(1)\;P_1 < P_2 < P_3$ 

 $(2)\;P_3 < P_2 < P_1$

 $(3)\;P_3 < P_1 < P_2$

 $(4)\;P_2 < P_1 < P_3$