Which of the following options does NOT represent a property of suspensions?

Correct option is C

Correct Answer: (c) The particles of a suspension cannot be seen by the naked eyes.

Explanation:

• In a suspension, the particles are large enough to be seen by the naked eye and can scatter light (Tyndall effect).
• Suspensions are heterogeneous mixtures, meaning the particles are not uniformly distributed, and they tend to settle at the bottom over time, making them unstable.
• Thus, the statement that "the particles of a suspension cannot be seen by the naked eyes" is incorrect.

Other Options:

• The particles of a suspension scatter a beam of light passing through it: Correct, suspensions show the Tyndall effect due to the large particle size.
• A suspension is a heterogeneous mixture: Correct, as the composition of suspensions is not uniform throughout.
• A suspension is unstable in nature: Correct, as the particles settle down over time, separating from the solvent.