A solution with negative deviation among the following is

Consider a solution composed of two components A and B. When the components have a greater force of attraction between A and B than A and A or B and B, then the solution exhibits negative deviation in Raoult's law. The mixture of chloroform and acetone has a strong force of attraction between the chloroform and the acetone. This attraction is greater than the attraction between the chloroform or between the acetone molecules. So, the solution shows a negative Raoult's law deviation. Thus, (c) is the correct option.