Question

Sugar and Salt solutions are:

• A. Heterogeneous mixtures
• B. True solutions
• C. Colloidal solutions
• D. Suspensions

Hint:

True solutions are homogeneous mixtures where the solute is completely dissolved in the solvent, and particles are not visible.

Answer 1

The Correct Option is B

Sugar and salt solutions are categorized as true solutions.

In chemistry, a true solution is a homogeneous mixture where the solute (like sugar or salt) is completely dissolved in the solvent (typically water) at the molecular level. This results in a clear, uniform mixture where the solute particles are not visible to the naked eye and do not settle upon standing. The key characteristics of true solutions include:

• Homogeneity: The composition is uniform throughout the solution.
• Particle Size: The particles of the solute are very small, less than 1 nanometer in diameter, which allows them to completely dissolve in the solvent.
• Visibility: The particles are not visible under a microscope.
• Stability: The solution is stable, and the solute does not settle out over time.
• Filterability: True solutions pass through ordinary filter paper without leaving a residue.

These characteristics distinguish true solutions from heterogeneous mixtures, colloidal solutions, and suspensions, where the phases are either visibly distinct, or the particles differ in size and behavior.