Suspension is an example of a heterogeneous mixture in which particles are dispersed in a liquid or gas. The transparency of the suspension depends on the size and nature of the particles present in it.

Opaque Suspensions

Opaque suspensions contain large particles that scatter light and prevent it from passing through the mixture. The particles present in the suspension are larger than the wavelength of the visible light, which makes the suspension appear opaque or non-transparent. Examples of opaque suspensions include mud, clay, and milk.

Translucent Suspensions

Translucent suspensions contain smaller particles that scatter light but allow some light to pass through the mixture. The particles present in the suspension are smaller than the wavelength of the visible light, which makes the suspension appear translucent or partially transparent. Examples of translucent suspensions include fog, smoke, and mist.

Transparent Suspensions

Transparent suspensions contain very small particles that do not scatter light and allow it to pass through the mixture. The particles present in the suspension are smaller than the wavelength of the visible light, which makes the suspension appear transparent or completely see-through. Examples of transparent suspensions include air, water, and sugar syrup.

Conclusion

In conclusion, the transparency of a suspension depends on the size and nature of the particles present in it. Opaque suspensions contain large particles that scatter light and prevent it from passing through the mixture, translucent suspensions contain smaller particles that scatter light but allow some light to pass through the mixture, and transparent suspensions contain very small particles that do not scatter light and allow it to pass through the mixture.

I think it's depends on the constituents of which they will form. //