Question

Clouds, mist, fog and aerosols (such as perfumes and sprays) are colloidal solutions of a:
A.Liquid in gas
B.Gas in a solid
C.Solid in a gas
D.Gas in a liquid

Answer 1

We were asked to find clouds, mist, fog and aerosols are which kind of colloidal solutions. So we first discuss suspensions and colloids briefly. Then we discuss briefly about tyndall effects and we also list out some examples of every type of colloidal solution.

Complete step by step answer:
A suspension is a heterogeneous combination in which some of the debris settles out of the mixing upon standing. The debris in a suspension is always larger than those of an answer, so gravity is in a position to tug them down out of the dispersion medium (water). The diameter for the dispersed particles in a suspension, together with the sand inside the suspension described above, is typically at least a thousand instances more than those in an answer. Unlike an answer, the dispersed particles can be separated from the dispersion medium by filtering. Suspensions are considered heterogeneous due to the fact the distinct materials inside the Mixture will no longer remain uniformly dispensed if they may be not actively being Mixed.

Colloids
A colloid is a heterogeneous combination in which the dispersed particles are intermediate in size between the ones of a solution and a suspension. The particles are spread evenly at some point of the dispersion medium, which can be a stable, liquid, or gasoline. Because the dispersed particles of a colloid aren't as big as the ones of a suspension, they do not now settle out upon status. The desk beneath summarizes the residences and distinctions between answers, colloids, and suspensions.
Colloids are not like solutions due to the fact their dispersed particles are a whole lot larger than the ones of a solution. The dispersed particles of a colloid cannot be separated by means of filtration, but they scatter light, a phenomenon referred to as the Tyndall impact.

Some examples of colloids are:

Dispersion Medium	Dispersed Phase	Type of Colloid	Example
Solid	Solid	Solid sol	Ruby glass
Solid	Liquid	Solid emulsion	Pearl, cheese
Solid	Gas	Solid foam	Lava
Liquid	Solid	Sol	Cell fluids
Liquid	Liquid	Emulsion	Oil in water
Liquid	Gas	Foam	Soap suds
Gas	Solid	Aerosol	Smoke
Gas	Liquid	Aerosol	Fog, mist, cloud

So, the correct answer is Option A.

Additional Information:
Colloids are regularly Confused with true homogenous solutions because the individual dispersed particles of a colloid can't be seen. When light is passed through a solution, the dissolved particles are too small to deflect the light. However, the dispersed particles of a colloid, being large, do deflect light. The Tyndall impact is the scattering of seen light by colloidal particles. You have surely "seen" a light beam because it passes through fog, smoke, or a scattering of dirt particles suspended in the air. All 3 are examples of colloids. Suspensions can also scatter light, but if the variety of suspended particles is sufficiently large, the suspension may additionally truly be opaque, and the light scattering will not arise.

Note:
When the dispersion medium is water, the colloidal system is often referred to as a hydrocolloid. The particles in the dispersed phase can take place in different phases and can take place in different phases depending on how much water is available.