Question

water and alcohol are two liquids that mix completely but can be separated by distillation. what property allows this separation?
color
melting point
density
boiling point

Explanation:

Distillation separates liquids by heating the mixture to the boiling point of the more volatile substance, causing it to vaporize, then condensing the vapor. Water and alcohol have different boiling points, so this property enables their separation. The other listed properties (color, melting point, density) are not utilized in distillation for this purpose.

Answer:

D. boiling point