'कोलाइड' (colloid) का उदाहरण है:

उत्तर: (A) दूध — Colloid: particle size 1-100 nm, heterogeneous, shows Tyndall effect (light scattering). Examples: milk, fog, blood, ink, smoke, butter, jelly. Solution: < 1 nm, homogeneous. Suspension: > 100 nm, set...