Spear Grass (Aristida) is dispersed by

Congress Grass is

Fog is an example of colloidal system of : liquid dispersed in gas, gas dispersed in gas, solid dispersed in gas, solid dispersed in liquid

Smoke is colloidal solution of (1)Solid dispersed in liquid (2)Gas dispersed in solid (3)Solid dispersed in gas (4)Gas dispersed in liquid

rolling grass is

Grass with sobole is