Which of the following is true?

$\begin{array}{1 1}\text{The ideal behaviour of a liquid solution is due to the fact that the different molecules present in it do not interact with one other}\\\text{Henry's law deals with the variation of solubility of gas with temperature}\\\text{The constituents of an ideal solution follow Raoult's law under all conditions}\\\text{The addition of a nonvolatile solute to a volatile solvent decreases the boiling point of the latter}\end{array}$

Answer : The constituents of an ideal solution follow Raoult's law under all conditions
Raoult's Law only works for ideal solutions. An ideal solution is defined as one which obeys Raoult's Law. "An ideal solution shows thermodynamic mixing characteristics identical to those of ideal gas mixtures except ideal solutions have intermolecular interactions equal to those of the pure components."
edited Jan 29