4215. Critical solution temperature (or the con-solute temperature) for partially miscible liquids (e.g., phenol-water) is the minimum temperature at which September 7, 2025 by Admin A. A homogeneous solution (say of phenol water) is formed B. Mutual solubility of the two liquids shows a decreasing trend C. Two liquids are completely separated into two layers D. None of these ✅ The correct answer is option A.