Homogeneous and Heterogeneous Mixtures:

A homogeneous mixture is a uniform composition throughout, meaning that the components are evenly distributed and cannot be easily distinguished. On the other hand, a heterogeneous mixture consists of visibly different substances or phases, and the components can be separated by physical means.

Explanation:

The given mixture of sulphur and carbon disulphide is a heterogeneous mixture and does not show the Tyndall effect. Here's why:

1. Heterogeneous Mixture:
In a heterogeneous mixture, the substances are not uniformly distributed. In this case, sulphur and carbon disulphide would not mix completely, resulting in visible differences between the two components. This can be observed as separate phases or regions within the mixture.

2. Tyndall Effect:
The Tyndall effect is the scattering of light by colloidal particles or suspended particles in a medium. When a light beam passes through a homogeneous mixture, the individual particles are too small to scatter the light significantly, and the beam appears invisible. However, in a heterogeneous mixture, the larger particles or phases can scatter the light, making the beam visible. This effect is commonly observed in colloids, fog, or smoke.

3. Homogeneous Mixture and Tyndall Effect:
In a homogeneous mixture, the particles are uniformly distributed, and their size is generally smaller than the wavelength of visible light. As a result, the particles cannot scatter the light significantly, and the mixture appears transparent. Therefore, a homogeneous mixture does not exhibit the Tyndall effect.

4. Carbon Disulphide and Sulphur:
Carbon disulphide is a colorless liquid, while sulphur is a yellow solid. These two substances have different physical properties and are immiscible, meaning they cannot dissolve in each other. When mixed, they will form a heterogeneous mixture with visible differences between the liquid and solid phases.

5. Conclusion:
Based on the properties of the given mixture, it can be concluded that it is a heterogeneous mixture and does not show the Tyndall effect. The separate phases of carbon disulphide and sulphur would not scatter light significantly, resulting in a lack of visible light scattering or the Tyndall effect.