Question 24

A water-based liquid preparation in which at least one ingredient has dissolved completely is called a solution.

A solution is defined as a homogeneous mixture where one or more substances (the solutes) are completely dissolved in a solvent, typically water in this context.

A) Solution

This option is correct because a solution is characterized by the complete dissolution of solutes in a solvent, forming a consistent and uniform mixture. In this case, the water-based liquid preparation fits this definition perfectly.

B) Suspension

A suspension is a mixture where solid particles are dispersed in a liquid but not fully dissolved. The particles can settle over time, indicating that the components are not in a homogeneous state, which disqualifies it from being the correct answer.

C) Emulsion

An emulsion is a mixture of two immiscible liquids, like oil and water, where one is dispersed in the other. Since this does not involve complete dissolution but rather a dispersion of substances, it cannot be classified as a solution.

D) Elixir

An elixir is a liquid preparation that typically contains a solution of a medicinal substance in alcohol or another solvent. While it may involve dissolved components, the primary characteristic of elixirs does not align with the definition of a solution focused solely on water-based liquid preparations.

Conclusion

The correct answer is "solution" because it accurately describes a water-based preparation where the ingredients are fully dissolved, creating a homogeneous mixture. All other options fail to meet this criterion, either by involving undissolved particles or mixtures of immiscible substances.