When the dispersed phase is gas and dispersing medium is solid and the type of colloid is-

Explanation

Explanation: Properties of a colloid- A colloid is a heterogeneous mixture. The size of particles of a colloid is too small to be individually seen by naked eyes. Colloids are big enough to scatter a beam of light passing through it and make its path visible. They do not settle down when left undisturbed , that is, a colloid is quite stable They cannot be separated from the mixture by the process of filtration . But, a special technique of separation known as centrifugation , can be used to separate the colloidal particles. Common Examples of colloids Dispersed phase Dispersed medium Type Example Liquid Gas Aerosol Fog, clouds, mist Solid Gas Aerosol Smoke, automobile exhaust Gas Liquid Foam Shaving cream Liquid Liquid Emulsion Milk, face cream Solid Liquid Sol Milk of magnesia, mud Gas Solid Foam Foam, rubber, sponge, pumice Liquid Solid Gel Jelly , cheese, butter Solid Solid Solid Sol Colored gemstone, milky glass