A mixture of sulphur and carbon disulphide is an example of colloid. it does not form uniform composition. uniform composition mean, a mixture of uniform composition is one in which molecules of all the components are arrange uniformly throughout the mixture. it is not possible to recognize them. but in case of mixture of sulphur and carbon disulphide, it does not form uniform composition.

If we talk about properties for this mixture, properties of the mixture are totally different throughout the solution. it mean, properties are different of both the items (sulphur and carbon disulphide). Due to this reason, we can say that this mixture form heterogeneous colloid. and it show tyndall effect.

It show the tyndall effect, in the mixture of sulphur and carbon disulphide. the main reason is that, sulphur remains suspended in water. it mean, sulphur (solid) is easily spread throughout the liquid (carbon disulphide – it is colourless volatile liquid) without the dissolving in it. after spreading of sulphur (solid) in liquid, they settles down slowly as a bottom layer in carbon disulphide. so, the suspended particles can show this tyndall effect.

If we talk about tyndall effect. The scattering of light by colloidal particle. due to scattering of light we are sometimes able to see the path of light, this phenomenon is called tyndall effect. Scattering of light is depends upon size of particles. If the size of particles is large then it gives better scattering of light but if the size of particles is small then it gives poor scattering. the main reason is that, the large particle size scatter all colours whereas small particle size scatter only blue colour.

In simple words, tyndall effect is the special type phenomenon where the light is scattered by colloid or suspension. but sometimes, the source of light is not completely pass through by colloid. it is true and it is possible when the individual particles of colloid, when keep in front of light source. there is not tyndall effect activities occur. the main reason is that, do not allow the source of light or path of light to completely pass through it. due to this, there is not visible of source of light or path of light in case of individuals colloid.