Question

1. distillation is used to separate mixtures based on its

boiling point

melting point

viscosity

particle size

Explanation:

Distillation is a separation technique. It works by heating a mixture. The component with the lower boiling point vaporizes first. Then, the vapor is cooled and condensed back to liquid. This process relies on differences in boiling points. Melting point is for solid - liquid phase change (not relevant here). Viscosity is a measure of a fluid's resistance to flow. Particle size is used in techniques like filtration.

Answer:

boiling point