Question

The Zeta potential is related to which property of colloids?

• A. Colour
• B. Tyndall effect
• C. Charge on the surface of colloidal particles
• D. Brownian movement

Answer 1

The Correct Option is A

The question asks about the property of colloids that is related to Zeta potential, and the options provided are:

1. Colour
2. Tyndall effect
3. Charge on the surface of colloidal particles
4. Brownian movement

The Zeta potential is a scientific term used to describe the electrical potential at the boundary of a colloidal particle in a solution. It is a measure of the magnitude of the repulsion or attraction between particles, which is crucial for the stability of colloidal systems. Let's analyze each option:

• Colour: This property is related to the absorption and scattering of light by colloidal particles, but it is not directly linked to Zeta potential.
• Tyndall effect: This refers to the scattering of light by particles in a colloid, which is also unrelated to Zeta potential.
• Charge on the surface of colloidal particles: Correct! Zeta potential relates to this. It indicates the potential difference between the dispersion medium and the stationary layer of fluid attached to the dispersed particle. Thus, this is the correct answer.
• Brownian movement: This describes the random motion of colloidal particles due to collision with molecules of the dispersion medium, not related to Zeta potential.

Conclusion: The correct option is indeed Charge on the surface of colloidal particles, as it directly relates to the concept of Zeta potential. This potential is used to predict the stability of colloidal systems; more charge generally leads to better stability.