Final answer:
Liquid sodium chloride has a high surface tension because it is a strong electrolyte.
Step-by-step explanation:
The correct answer is (c) Yes, because it is a strong electrolyte. Sodium chloride (NaCl) is an ionic compound that dissociates into sodium ions (Na+) and chloride ions (Cl-) when dissolved in water. As an ionic compound, NaCl has high surface tension due to its strong interionic interactions. The presence of solvated ions in the liquid also contributes to its high surface tension. However, it is the temperature that primarily affects the surface tension; as the temperature increases, the surface tension typically decreases. This is because higher temperatures give molecules more kinetic energy, weakening the cohesive forces that contribute to surface tension.