Mixture(s) showing positive deviation from Raoult's law at is (are): This questi

Positive deviation from Raoult's law occurs when intermolecular forces between unlike molecules are weaker than those between like molecules, leading to higher vapor pressure. Carbon tetrachloride (nonpolar) and methanol (polar, hydrogen-bonding) have weak CCl4-methanol interactions, so the mixture shows positive deviation. Carbon disulphide + acetone similarly shows positive deviation, but benzene + toluene is ideal, and phenol + aniline shows negative deviation due to strong hydrogen bonding. Option A is one correct example.