A mixture of water and alcohol can be separated by A. Filtration B. Evaporation C. Decantation D. Distillation

The correct answer is D. Distillation.

Distillation is a process of separating a mixture of liquids based on their boiling points. The mixture is heated until the liquid with the lower boiling point vaporizes. The vapor is then condensed back into a liquid and collected.

In the case of a mixture of water and alcohol, the alcohol will vaporize at a lower temperature than the water. The vapor will then be condensed back into a liquid and collected. This will result in a pure sample of alcohol.

The other options are not correct because they do not separate the mixture based on the boiling points of the liquids.

• Filtration is a process of separating a mixture of solids and liquids by passing the mixture through a filter. The filter allows the liquid to pass through, but the solids are trapped.
• Evaporation is a process of converting a liquid into a gas. The liquid is heated until it vaporizes. The vapor then condenses back into a liquid and is collected.
• Decantation is a process of separating a mixture of liquids that have different densities. The mixture is allowed to stand until the denser liquid settles to the bottom. The less dense liquid is then poured off.