Identify from the following pair of solutions on mixing exhibits...

Chloroform and acetone form intermolecular hydrogen bonds upon mixing, leading to stronger interactions and a negative deviation from Raoult's law.

Carbon disulfide and acetone mixture exhibits a positive deviation because the non-polar carbon disulfide molecules disrupt the strong dipole-dipole interactions between acetone molecules, making the solute-solvent interactions weaker than the solute-solute and solvent-solvent interactions.

Phenol and aniline form strong intermolecular hydrogen bonds, resulting in a negative deviation.

Benzene and toluene form an ideal solution as their intermolecular interactions are similar in magnitude.

Therefore, the mixture of carbon disulfide and acetone exhibits a positive deviation from Raoult's law.

Answer: Carbon disulfide and acetone